[ { "key": "GFH2Q3IN", "version": 4237, "library": { "type": "group", "id": 4428, "name": "Eau et GEOpatrimoine-IGD", "links": { "alternate": { "href": "https://www.zotero.org/groups/eau_et_geopatrimoine-igd", "type": "text/html" } } }, "links": { "self": { "href": "https://api.zotero.org/groups/4428/items/GFH2Q3IN", "type": "application/json" }, "alternate": { "href": "https://www.zotero.org/groups/eau_et_geopatrimoine-igd/items/GFH2Q3IN", "type": "text/html" } }, "meta": { "createdByUser": { "id": 40833, "username": "CedocIGUL", "name": "Centre de documentation (UNIL-IGD, CH)", "links": { "alternate": { "href": "https://www.zotero.org/cedocigul", "type": "text/html" } } }, "lastModifiedByUser": { "id": 1221415, "username": "CedocIGD", "name": "Centre de documentation (UNIL-IGD, CH)", "links": { "alternate": { "href": "https://www.zotero.org/cedocigd", "type": "text/html" } } }, "creatorSummary": "Theler et al.", "parsedDate": "2010", "numChildren": 0 }, "data": { "key": "GFH2Q3IN", "version": 4237, "itemType": "journalArticle", "title": "The contribution of geomorphological mapping to sediment transfer evaluation in small alpine catchments", "creators": [ { "creatorType": "author", "firstName": "David", "lastName": "Theler" }, { "creatorType": "author", "firstName": "Emmanuel", "lastName": "Reynard" }, { "creatorType": "author", "firstName": "Christophe", "lastName": "Lambiel" }, { "creatorType": "author", "firstName": "Eric", "lastName": "Bardou" } ], "abstractNote": "The assessment of sediment transfer processes is necessary to understand the hydro-geomorphological functioning of small alpine watersheds prone to channelised debris flows because their occurrence often depends on the amount of debris available in the gully systems. Therefore, sediment budgets should be studied through the identification of erosion, transport and deposition processes. Sediment transfer processes were investigated in a small catchment by field measurements and, more specifically, through the application of a process-based geomorphological mapping method. The proposed methodology is based on data directly derived from GIS analysis using high-resolution DEM, field measurements and aerial photograph interpretations. It has been conceived to estimate sediment transfer dynamics, taking into account the role of different sediment stores in the torrential system. The proposed geomorphological mapping methodology is quite innovative in comparison with most legend systems that are not adequate for mapping comprehensively active and complex geomorphological systems such as debris flow catchments. Maps representing the various sediment storages and their relationships can be used for hydro-geomorphological hazard mitigation.", "publicationTitle": "Geomorphology", "publisher": "", "place": "", "date": "2010", "volume": "In Press, Corrected Proof", "issue": "", "section": "", "partNumber": "", "partTitle": "", "pages": "", "series": "", "seriesTitle": "", "seriesText": "", "journalAbbreviation": "", "DOI": "10.1016/j.geomorph.2010.03.006", "citationKey": "", "url": "http://www.sciencedirect.com/science/article/B6V93-4YKGHY6-1/2/93c14c73bb716efdfed60dc03de82387", "accessDate": "2010-03-31T11:41:02Z", "PMID": "", "PMCID": "", "ISSN": "0169-555X", "archive": "", "archiveLocation": "", "shortTitle": "", "language": "", "libraryCatalog": "ScienceDirect", "callNumber": "", "rights": "", "extra": "", "tags": [ { "tag": "Debris flow", "type": 1 }, { "tag": "Geomorphological mapping", "type": 1 }, { "tag": "Sediment storage", "type": 1 }, { "tag": "Sediment transfer", "type": 1 }, { "tag": "Swiss Alps", "type": 1 } ], "collections": [ "I2BAT6CT", "ZQFRKKRT" ], "relations": { "dc:replaces": "http://zotero.org/groups/4428/items/E7EKPZPB" }, "dateAdded": "2010-03-31T11:41:02Z", "dateModified": "2023-07-21T09:30:16Z" } }, { "key": "ITMJI5TT", "version": 4237, "library": { "type": "group", "id": 4428, "name": "Eau et GEOpatrimoine-IGD", "links": { "alternate": { "href": "https://www.zotero.org/groups/eau_et_geopatrimoine-igd", "type": "text/html" } } }, "links": { "self": { "href": "https://api.zotero.org/groups/4428/items/ITMJI5TT", "type": "application/json" }, "alternate": { "href": "https://www.zotero.org/groups/eau_et_geopatrimoine-igd/items/ITMJI5TT", "type": "text/html" } }, "meta": { "createdByUser": { "id": 40833, "username": "CedocIGUL", "name": "Centre de documentation (UNIL-IGD, CH)", "links": { "alternate": { "href": "https://www.zotero.org/cedocigul", "type": "text/html" } } }, "lastModifiedByUser": { "id": 1221415, "username": "CedocIGD", "name": "Centre de documentation (UNIL-IGD, CH)", "links": { "alternate": { "href": "https://www.zotero.org/cedocigd", "type": "text/html" } } }, "creatorSummary": "Thenard", "parsedDate": "2009-11-27", "numChildren": 0 }, "data": { "key": "ITMJI5TT", "version": 4237, "itemType": "thesis", "title": "Torrents et torrentialité dans la vallée de la Guisane - Contribution d'une étude géographique à la gestion durable du risque torrentiel à Serre-Chevalier (Briançonnais; Hautes-Alpes; France)", "creators": [ { "creatorType": "author", "firstName": "Lucas", "lastName": "Thenard" } ], "abstractNote": "", "thesisType": "", "university": "Université des Sciences et Technologie de Lille", "place": "", "date": "2009-11-27", "series": "", "seriesNumber": "", "numPages": "", "DOI": "", "ISBN": "", "citationKey": "", "url": "http://tel.archives-ouvertes.fr/tel-00461953/fr/", "accessDate": "2010-03-31T11:49:32Z", "ISSN": "", "archive": "", "archiveLocation": "", "shortTitle": "", "language": "", "libraryCatalog": "", "callNumber": "", "rights": "", "extra": "Depuis les années 1950, la création de Serre-Chevalier a entraîné les communes de la vallée de la Guisane dans une profonde reconversion socio-économique. Jadis prudemment délaissés, nombre d'espaces ont alors fait l'objet d'une urbanisation massive. Les cônes torrentiels se trouvent être le cadre privilégié de cette rivalité spatiale, et en conséquence l'espace du risque. Les relations 'torrents-société' restent assez conflictuelles, et l'intégration du risque torrentiel dans les projets d'aménagement ou de développement est encore souvent perçue comme une contrainte supplémentaire. Ce travail se caractérise par une approche transversale et multiscalaire couplant des investigations de terrains et des analyses réalisées ex situ. Le diagnostic de l'aléa torrentiel repose essentiellement sur la notion de 'potentialité' afin de se détacher du 'carcan' habituel du zonage historique. L'étude des ajustements morphologiques contemporains a permis de mieux cerner la diversité des configurations locales, mais aussi l'inexorable montée de la vulnérabilité avec le développement de Serre-Chevalier. La mise en perspective de la gestion passée et actuelle du risque a permis d'avancer quelques propositions, passant notamment par un recentrage sensible de la prévention sur l'information, la pédagogie, et surtout les enjeux. Par ailleurs, un système d'informations sur le risque torrentiel à Serre-Chevalier (SIRTOS) a été conçu. Ce dernier pourrait faciliter les prises de décisions par son interopérabilité, son enrichissement, son intégration dans les projets d'aménagement, et ainsi aboutir à une gestion plus durable du risque torrentiel.", "tags": [], "collections": [ "HBKPMAG2", "ZQFRKKRT" ], "relations": { "dc:replaces": "http://zotero.org/groups/4428/items/XC6PSTJ3" }, "dateAdded": "2010-03-31T11:49:32Z", "dateModified": "2023-07-21T09:30:13Z" } }, { "key": "CHTR4MNB", "version": 3781, "library": { "type": "group", "id": 4428, "name": "Eau et GEOpatrimoine-IGD", "links": { "alternate": { "href": "https://www.zotero.org/groups/eau_et_geopatrimoine-igd", "type": "text/html" } } }, "links": { "self": { "href": "https://api.zotero.org/groups/4428/items/CHTR4MNB", "type": "application/json" }, "alternate": { "href": "https://www.zotero.org/groups/eau_et_geopatrimoine-igd/items/CHTR4MNB", "type": "text/html" } }, "meta": { "createdByUser": { "id": 40833, "username": "CedocIGUL", "name": "Centre de documentation (UNIL-IGD, CH)", "links": { "alternate": { "href": "https://www.zotero.org/cedocigul", "type": "text/html" } } }, "creatorSummary": "RTS", "parsedDate": "2017-04-20", "numChildren": 0 }, "data": { "key": "CHTR4MNB", "version": 3781, "itemType": "radioBroadcast", "title": "De l'eau à l'érosion", "creators": [ { "creatorType": "director", "firstName": "", "lastName": "RTS" }, { "creatorType": "guest", "firstName": "Michel", "lastName": "Jaboyedoff" } ], "abstractNote": "L’eau est capable de creuser une vallée ou d’aplanir une montagne en quelques millions d’années, mais aussi de modifier tout un paysage en quelques minutes. Silvio Dolzan s'intéresse au pouvoir érosif de l’eau. Avec Michel Jaboyedoff, professeur à la Faculté des géosciences et de l’environnement de l'Université de Lausanne.", "programTitle": "RTS - CQFD", "episodeNumber": "", "audioRecordingFormat": "", "network": "", "place": "", "date": "2017-04-20", "runningTime": "", "DOI": "", "citationKey": "", "url": "http://www.rts.ch/play/radio/cqfd/audio/de-leau-a-lerosion?id=8523013", "accessDate": "", "archive": "", "archiveLocation": "", "shortTitle": "", "language": "", "libraryCatalog": "", "callNumber": "", "rights": "", "extra": "", "tags": [], "collections": [ "ZQFRKKRT" ], "relations": {}, "dateAdded": "2017-04-21T09:02:51Z", "dateModified": "2017-04-21T09:03:55Z" } }, { "key": "8IKINSFX", "version": 3763, "library": { "type": "group", "id": 4428, "name": "Eau et GEOpatrimoine-IGD", "links": { "alternate": { "href": "https://www.zotero.org/groups/eau_et_geopatrimoine-igd", "type": "text/html" } } }, "links": { "self": { "href": "https://api.zotero.org/groups/4428/items/8IKINSFX", "type": "application/json" }, "alternate": { "href": "https://www.zotero.org/groups/eau_et_geopatrimoine-igd/items/8IKINSFX", "type": "text/html" } }, "meta": { "createdByUser": { "id": 40833, "username": "CedocIGUL", "name": "Centre de documentation (UNIL-IGD, CH)", "links": { "alternate": { "href": "https://www.zotero.org/cedocigul", "type": "text/html" } } }, "creatorSummary": "Reynard", "parsedDate": "2016-12-31", "numChildren": 0 }, "data": { "key": "8IKINSFX", "version": 3763, "itemType": "journalArticle", "title": "Géomorphologie dynamique et environnement. Processus et relais dans les bassins versants", "creators": [ { "creatorType": "author", "firstName": "Emmanuel", "lastName": "Reynard" } ], "abstractNote": "L’ouvrage que nous proposent Monique Fort, François Bétard et Gilles Arnaud‑Fassetta, tous trois enseignants-chercheurs à l’Université Paris-Diderot, spécialistes respectivement de géomorphologie des montagnes, de géomorphologie tropicale et de géomorphologie fluviale, se veut une approche renouvelée de la géomorphologie dynamique, organisée autour de la notion de bassin versant. Tout au long des 336 pages, organisées en sept chapitres, les auteurs mettent en évidence l’importance de la dyna...", "publicationTitle": "Géomorphologie : relief, processus, environnement", "publisher": "", "place": "", "date": "2016/12/31", "volume": "22", "issue": "4", "section": "", "partNumber": "", "partTitle": "", "pages": "409-410", "series": "", "seriesTitle": "", "seriesText": "", "journalAbbreviation": "", "DOI": "", "citationKey": "", "url": "http://geomorphologie.revues.org/11592?utm_content=buffer96065&utm_medium=social&utm_source=twitter.com&utm_campaign=buffer", "accessDate": "2017-02-17T16:03:58Z", "PMID": "", "PMCID": "", "ISSN": "1266-5304", "archive": "", "archiveLocation": "", "shortTitle": "", "language": "fr", "libraryCatalog": "geomorphologie.revues.org", "callNumber": "", "rights": "© Groupe français de géomorphologie", "extra": "Book review / recension", "tags": [], "collections": [ "ZQFRKKRT" ], "relations": {}, "dateAdded": "2017-02-17T16:03:58Z", "dateModified": "2017-02-17T16:04:33Z" } }, { "key": "UFC79KRX", "version": 3749, "library": { "type": "group", "id": 4428, "name": "Eau et GEOpatrimoine-IGD", "links": { "alternate": { "href": "https://www.zotero.org/groups/eau_et_geopatrimoine-igd", "type": "text/html" } } }, "links": { "self": { "href": "https://api.zotero.org/groups/4428/items/UFC79KRX", "type": "application/json" }, "alternate": { "href": "https://www.zotero.org/groups/eau_et_geopatrimoine-igd/items/UFC79KRX", "type": "text/html" } }, "meta": { "createdByUser": { "id": 40833, "username": "CedocIGUL", "name": "Centre de documentation (UNIL-IGD, CH)", "links": { "alternate": { "href": "https://www.zotero.org/cedocigul", "type": "text/html" } } }, "creatorSummary": "Piton et al.", "parsedDate": "2017-01-01", "numChildren": 0 }, "data": { "key": "UFC79KRX", "version": 3749, "itemType": "journalArticle", "title": "Why do we build check dams in Alpine streams? An historical perspective from the French experience", "creators": [ { "creatorType": "author", "firstName": "Guillaume", "lastName": "Piton" }, { "creatorType": "author", "firstName": "Simon", "lastName": "Carladous" }, { "creatorType": "author", "firstName": "Alain", "lastName": "Recking" }, { "creatorType": "author", "firstName": "Jean Marc", "lastName": "Tacnet" }, { "creatorType": "author", "firstName": "Frédéric", "lastName": "Liébault" }, { "creatorType": "author", "firstName": "Damien", "lastName": "Kuss" }, { "creatorType": "author", "firstName": "Yann", "lastName": "Quefféléan" }, { "creatorType": "author", "firstName": "Olivier", "lastName": "Marco" } ], "abstractNote": "For more than 150 years, humans have tried to limit the geomorphic activity of mountain streams, and the related damage, using torrent control works. Check dams are likely the most emblematic civil engineering structures used in soil conservation programs. Modern mountain societies have inherited thousands of these structures built in upland gullies and streams. To help define their effectiveness and decisions concerning their maintenance or new project designs, a clear understanding of potential effects of check dams on river systems, i.e. their functions, is first needed. The next steps concern quantitative assessments of each function on the flood features and combination of all effects. The present understanding of these sometimes old structures' functions can be complicated because the societal and environmental contexts in which the original structures were built may have changed. To bridge this gap, this paper traces the purposes for which check dams were built, through a detailed analysis of French archives. We first analyze chronologically how each function was theorized and applied in the field. In the nineteenth century, engineers developed a thorough empirical and conceptual knowledge of mountain soil erosion, torrential geomorphology, and sediment transport processes as well as check dam interactions with these natural processes. The second part of this paper synthesizes conceptual descriptions of the check dams' functions, in the light of more than 150 years of experience, with their implication on the features of the structures. The French experience is compared to other countries' pioneering works. Finally, the next steps and remaining research challenges toward a comprehensive analysis of check dams' efficiency in torrent hazard mitigation are presented. This analysis is proposed to remind how, conceptually, check dams may influence geomorphic systems, bearing in mind the knowledge represented in pioneer guidelines and recent works on the subject. Copyright © 2016 John Wiley & Sons, Ltd.", "publicationTitle": "Earth Surface Processes and Landforms", "publisher": "", "place": "", "date": "janvier 1, 2017", "volume": "42", "issue": "1", "section": "", "partNumber": "", "partTitle": "", "pages": "91-108", "series": "", "seriesTitle": "", "seriesText": "", "journalAbbreviation": "Earth Surf. Process. Landforms", "DOI": "10.1002/esp.3967", "citationKey": "", "url": "http://onlinelibrary.wiley.com/doi/10.1002/esp.3967/abstract", "accessDate": "2017-01-16T14:24:32Z", "PMID": "", "PMCID": "", "ISSN": "1096-9837", "archive": "", "archiveLocation": "", "shortTitle": "Why do we build check dams in Alpine streams?", "language": "en", "libraryCatalog": "Wiley Online Library", "callNumber": "", "rights": "", "extra": "", "tags": [ { "tag": "grade control structure", "type": 1 }, { "tag": "historical analysis", "type": 1 }, { "tag": "mountain streams", "type": 1 }, { "tag": "torrent control works", "type": 1 }, { "tag": "torrent hazard mitigation", "type": 1 } ], "collections": [ "ZQFRKKRT" ], "relations": {}, "dateAdded": "2017-01-16T14:24:32Z", "dateModified": "2017-01-16T14:24:32Z" } }, { "key": "CJF3DMFG", "version": 3506, "library": { "type": "group", "id": 4428, "name": "Eau et GEOpatrimoine-IGD", "links": { "alternate": { "href": "https://www.zotero.org/groups/eau_et_geopatrimoine-igd", "type": "text/html" } } }, "links": { "self": { "href": "https://api.zotero.org/groups/4428/items/CJF3DMFG", "type": "application/json" }, "alternate": { "href": "https://www.zotero.org/groups/eau_et_geopatrimoine-igd/items/CJF3DMFG", "type": "text/html" } }, "meta": { "createdByUser": { "id": 40833, "username": "CedocIGUL", "name": "Centre de documentation (UNIL-IGD, CH)", "links": { "alternate": { "href": "https://www.zotero.org/cedocigul", "type": "text/html" } } }, "creatorSummary": "Meusburger and Alewell", "parsedDate": "2014", "numChildren": 0 }, "data": { "key": "CJF3DMFG", "version": 3506, "itemType": "report", "title": "Soil Erosion in the Alps : Experience gained from case studies (2006–2013)", "creators": [ { "creatorType": "author", "firstName": "Katrin", "lastName": "Meusburger" }, { "creatorType": "author", "firstName": "Christine", "lastName": "Alewell" } ], "abstractNote": "This publication of the FOEN “Environmental studies” series gives an overview of the knowledge gained on soil erosion in the Alps during several case studies between 2006 to 2013. Many Alpine areas experience an increase in soil erosion, which is demonstrated for three sites in the cantons Uri, Valais and Ticino. Potential causes for the increased erosion susceptibility as well as controlling factors in general are analysed and suitable methods for soil erosion assessment in Alpine areas evaluated", "reportNumber": "1408", "reportType": "Environmental studies", "institution": "Federal Office for the Environment", "place": "Bern", "date": "2014", "seriesTitle": "", "seriesNumber": "", "pages": "", "DOI": "", "ISBN": "", "citationKey": "", "url": "www.bafu.admin.ch/uw-1408-e", "accessDate": "", "ISSN": "", "archive": "", "archiveLocation": "", "shortTitle": "", "language": "Anglais", "libraryCatalog": "", "callNumber": "", "rights": "", "extra": "", "tags": [], "collections": [ "ZQFRKKRT" ], "relations": {}, "dateAdded": "2014-05-19T08:45:05Z", "dateModified": "2014-05-19T08:50:21Z" } }, { "key": "JDJPKR6M", "version": 3437, "library": { "type": "group", "id": 4428, "name": "Eau et GEOpatrimoine-IGD", "links": { "alternate": { "href": "https://www.zotero.org/groups/eau_et_geopatrimoine-igd", "type": "text/html" } } }, "links": { "self": { "href": "https://api.zotero.org/groups/4428/items/JDJPKR6M", "type": "application/json" }, "alternate": { "href": "https://www.zotero.org/groups/eau_et_geopatrimoine-igd/items/JDJPKR6M", "type": "text/html" } }, "meta": { "createdByUser": { "id": 40833, "username": "CedocIGUL", "name": "Centre de documentation (UNIL-IGD, CH)", "links": { "alternate": { "href": "https://www.zotero.org/cedocigul", "type": "text/html" } } }, "creatorSummary": "D'Arcy and Whittaker", "numChildren": 0 }, "data": { "key": "JDJPKR6M", "version": 3437, "itemType": "journalArticle", "title": "Geomorphic constraints on landscape sensitivity to climate in tectonically active areas", "creators": [ { "creatorType": "author", "firstName": "Mitch", "lastName": "D'Arcy" }, { "creatorType": "author", "firstName": "Alexander C.", "lastName": "Whittaker" } ], "abstractNote": "Abstract\nThe geomorphology of fluvial landscapes is known to record information about uplift rate, spatial patterns of faulting, and tectonic history. Data is far less available when addressing the sensitivity of common geomorphological metrics, such as channel steepness, to climatic boundary conditions. We test the relationship between channel steepness and precipitation rate by measuring a large number of channels in different mountainous areas. These regions exhibit a tenfold variation in precipitation rate between them (~ 100–1000 mm y− 1) but have similar uplift rates, allowing the tectonic variable to be controlled. By accounting for the orographic coupling of rainfall with uplifted topography, we find that channel steepness is significantly suppressed by higher precipitation rates in a measurable way that conforms to simple stream power erosion laws and empirical constraints on their parameters. We demonstrate this using modern and estimated glacial precipitation rates; and climate emerges as an important, quantifiable control on channel geometry. These findings help to explain why highly variable measurements of channel steepness are reported from different locations and provide important empirical constraints on how climate shapes tectonically active landscapes.", "publicationTitle": "Geomorphology", "publisher": "", "place": "", "date": "", "volume": "", "issue": "", "section": "", "partNumber": "", "partTitle": "", "pages": "", "series": "", "seriesTitle": "", "seriesText": "", "journalAbbreviation": "Geomorphology", "DOI": "10.1016/j.geomorph.2013.08.019", "citationKey": "", "url": "http://www.sciencedirect.com/science/article/pii/S0169555X13004248", "accessDate": "2013-10-10T12:03:22Z", "PMID": "", "PMCID": "", "ISSN": "0169-555X", "archive": "", "archiveLocation": "", "shortTitle": "", "language": "", "libraryCatalog": "ScienceDirect", "callNumber": "", "rights": "", "extra": "", "tags": [ { "tag": "Channel steepness", "type": 1 }, { "tag": "Climatic geomorphology", "type": 1 }, { "tag": "Long profile", "type": 1 }, { "tag": "Precipitation rate", "type": 1 }, { "tag": "Rivers", "type": 1 }, { "tag": "Uplift rate", "type": 1 } ], "collections": [ "ZQFRKKRT" ], "relations": {}, "dateAdded": "2013-10-10T12:03:22Z", "dateModified": "2013-10-10T12:03:22Z" } }, { "key": "NGB3DU3E", "version": 3422, "library": { "type": "group", "id": 4428, "name": "Eau et GEOpatrimoine-IGD", "links": { "alternate": { "href": "https://www.zotero.org/groups/eau_et_geopatrimoine-igd", "type": "text/html" } } }, "links": { "self": { "href": "https://api.zotero.org/groups/4428/items/NGB3DU3E", "type": "application/json" }, "alternate": { "href": "https://www.zotero.org/groups/eau_et_geopatrimoine-igd/items/NGB3DU3E", "type": "text/html" } }, "meta": { "createdByUser": { "id": 40833, "username": "CedocIGUL", "name": "Centre de documentation (UNIL-IGD, CH)", "links": { "alternate": { "href": "https://www.zotero.org/cedocigul", "type": "text/html" } } }, "creatorSummary": "Savi et al.", "parsedDate": "2013", "numChildren": 0 }, "data": { "key": "NGB3DU3E", "version": 3422, "itemType": "journalArticle", "title": "Geomorphic coupling between hillslopes and channels in the Swiss Alps", "creators": [ { "creatorType": "author", "firstName": "Sara", "lastName": "Savi" }, { "creatorType": "author", "firstName": "Michelle", "lastName": "Schneuwly-Bollschweiler" }, { "creatorType": "author", "firstName": "Bastian", "lastName": "Bommer-Denns" }, { "creatorType": "author", "firstName": "Markus", "lastName": "Stoffel" }, { "creatorType": "author", "firstName": "Fritz", "lastName": "Schlunegger" } ], "abstractNote": "The coupling relationships between hillslope and channel network are fundamental for the understanding of mountainous landscapes' evolution. Here, we applied dendrogeomorphic methods to identify the hillslope–channel relationship and the sediment transfer dynamics within an alpine catchment, at the highest possible resolution. The Schimbrig catchment is located in the central Swiss Alps and can be divided into two distinct geomorphic sectors. To the east, the Schimbrig earth flow is the largest sediment source of the basin, while to the west, the Rossloch channel network is affected by numerous shallow landslides responsible for the supply of sediment from hillslopes to channels. To understand the connectivity between hillslopes and channels and between sources and sink, trees were sampled along the main Rossloch stream, on the Schimbrig earth flow and on the Rossloch depositional area. Geomorphic observations and dendrogeomophic results indicate different mechanisms of sediment production, transfer and deposition between upper and lower segments of the channel network. In the source areas (upper part of the Rossloch channel system), sediment is delivered to the channel network through slow movements of the ground, typical of earth flow, shallow landslides and soil creep. Contrariwise, in the depositional area (lower part of the channel network), the mechanisms of sediment transfer are mainly due to torrential activity, floods and debris flows. Tree analysis allowed the reconstruction of periods of high activity during the last century for the entire catchment. The collected dataset presents a very high temporal resolution but we encountered some limitations in establishing the source-to-sink connectivity at the catchment-wide scale. Despite these uncertainties, for decennial timescales the results suggest a direct coupling between hillslopes and neighbouring channels in the Rossloch channel network, and a de-coupling between sediment sources and sink farther downstream, with connections possible only during extraordinary events. Copyright © 2012 John Wiley & Sons, Ltd.", "publicationTitle": "Earth Surface Processes and Landforms", "publisher": "", "place": "", "date": "2013", "volume": "38", "issue": "9", "section": "", "partNumber": "", "partTitle": "", "pages": "959–969", "series": "", "seriesTitle": "", "seriesText": "", "journalAbbreviation": "", "DOI": "10.1002/esp.3342", "citationKey": "", "url": "http://onlinelibrary.wiley.com/doi/10.1002/esp.3342/abstract", "accessDate": "2013-08-12T13:55:29Z", "PMID": "", "PMCID": "", "ISSN": "1096-9837", "archive": "", "archiveLocation": "", "shortTitle": "", "language": "en", "libraryCatalog": "Wiley Online Library", "callNumber": "", "rights": "Copyright © 2012 John Wiley & Sons, Ltd.", "extra": "", "tags": [ { "tag": "Connectivity", "type": 1 }, { "tag": "coupling–decoupling mechanisms", "type": 1 }, { "tag": "hillslope–channel processes", "type": 1 }, { "tag": "source to sink", "type": 1 }, { "tag": "tree rings", "type": 1 } ], "collections": [ "ZQFRKKRT" ], "relations": {}, "dateAdded": "2013-08-12T13:55:29Z", "dateModified": "2013-08-12T13:55:29Z" } }, { "key": "DX68IIIG", "version": 3382, "library": { "type": "group", "id": 4428, "name": "Eau et GEOpatrimoine-IGD", "links": { "alternate": { "href": "https://www.zotero.org/groups/eau_et_geopatrimoine-igd", "type": "text/html" } } }, "links": { "self": { "href": "https://api.zotero.org/groups/4428/items/DX68IIIG", "type": "application/json" }, "alternate": { "href": "https://www.zotero.org/groups/eau_et_geopatrimoine-igd/items/DX68IIIG", "type": "text/html" } }, "meta": { "createdByUser": { "id": 40833, "username": "CedocIGUL", "name": "Centre de documentation (UNIL-IGD, CH)", "links": { "alternate": { "href": "https://www.zotero.org/cedocigul", "type": "text/html" } } }, "creatorSummary": "Carrivick et al.", "parsedDate": "2013", "numChildren": 0 }, "data": { "key": "DX68IIIG", "version": 3382, "itemType": "journalArticle", "title": "Contemporary geomorphological activity throughout the proglacial area of an alpine catchment", "creators": [ { "creatorType": "author", "firstName": "Jonathan L.", "lastName": "Carrivick" }, { "creatorType": "author", "firstName": "Martin", "lastName": "Geilhausen" }, { "creatorType": "author", "firstName": "Jeff", "lastName": "Warburton" }, { "creatorType": "author", "firstName": "Neil E.", "lastName": "Dickson" }, { "creatorType": "author", "firstName": "Steve J.", "lastName": "Carver" }, { "creatorType": "author", "firstName": "Andrew J.", "lastName": "Evans" }, { "creatorType": "author", "firstName": "Lee E.", "lastName": "Brown" } ], "abstractNote": "Quantification of contemporary geomorphological activity is a fundamental prerequisite for predicting the effects of future earth surface process and landscape development changes. However, there is a lack of high-resolution spatial and temporal data on geomorphological activity within alpine catchments, which are especially sensitive to climate change, human impacts and which are amongst the most dynamic landscapes on Earth. This study used data from repeated laser scanning to identify and quantify the distribution of contemporary sediment sources and the intensity of geomorphological activity within the lower part of a glaciated alpine catchment; Ödenwinkelkees, central Austria. Spatially, geomorphological activity was discriminated by substrate class. Activity decreased in both areal extent and intensity with distance from the glacier, becoming progressively more restricted to the fluvially-dominated valley floor. Temporally, geomorphological activity was identified on annual, seasonal, weekly and daily timescales. Activity became more extensive with increasing study duration but more intense over shorter timescales, thereby demonstrating the importance of temporary storage of sediment within the catchment. The mean volume of material moved within the proglacial zone was 4400 m3.yr− 1, which suggests a net surface lowering of 34 mm.yr− 1 in this part of the catchment. We extrapolate a minimum of 4.8 mm.yr− 1 net surface lowering across the whole catchment. These surface lowering values are approximately twice those calculated elsewhere from contemporary measurements of suspended sediment flux, and of rates calculated from the geological record, perhaps because we measure total geomorphological activity within the catchment rather than overall efflux of material. Repeated geomorphological surveying therefore appears to mitigate the problems of hydrological studies underestimating sediment fluxes on decadal–annual time-scales. Further development of the approach outlined in this study will enable the quantification of geomorphological activity, alpine terrain stability and persistence of landforms.", "publicationTitle": "Geomorphology", "publisher": "", "place": "", "date": "avril 15, 2013", "volume": "188", "issue": "", "section": "", "partNumber": "", "partTitle": "", "pages": "83-95", "series": "", "seriesTitle": "", "seriesText": "", "journalAbbreviation": "Geomorphology", "DOI": "10.1016/j.geomorph.2012.03.029", "citationKey": "", "url": "http://www.sciencedirect.com/science/article/pii/S0169555X12001559", "accessDate": "2013-04-19T15:47:25Z", "PMID": "", "PMCID": "", "ISSN": "0169-555X", "archive": "", "archiveLocation": "", "shortTitle": "Sediment sources, source-to-sink fluxes and sedimentary budgets", "language": "", "libraryCatalog": "ScienceDirect", "callNumber": "", "rights": "", "extra": "", "tags": [ { "tag": "Glacier", "type": 1 }, { "tag": "Landscape denudation", "type": 1 }, { "tag": "LiDAR-laser scanning", "type": 1 }, { "tag": "River", "type": 1 }, { "tag": "Sediment flux", "type": 1 } ], "collections": [ "ZQFRKKRT" ], "relations": {}, "dateAdded": "2013-04-19T15:47:25Z", "dateModified": "2013-04-19T15:47:25Z" } }, { "key": "HHASCMZT", "version": 3382, "library": { "type": "group", "id": 4428, "name": "Eau et GEOpatrimoine-IGD", "links": { "alternate": { "href": "https://www.zotero.org/groups/eau_et_geopatrimoine-igd", "type": "text/html" } } }, "links": { "self": { "href": "https://api.zotero.org/groups/4428/items/HHASCMZT", "type": "application/json" }, "alternate": { "href": "https://www.zotero.org/groups/eau_et_geopatrimoine-igd/items/HHASCMZT", "type": "text/html" } }, "meta": { "createdByUser": { "id": 40833, "username": "CedocIGUL", "name": "Centre de documentation (UNIL-IGD, CH)", "links": { "alternate": { "href": "https://www.zotero.org/cedocigul", "type": "text/html" } } }, "creatorSummary": "Bennett et al.", "parsedDate": "2013", "numChildren": 0 }, "data": { "key": "HHASCMZT", "version": 3382, "itemType": "journalArticle", "title": "Patterns and controls of sediment production, transfer and yield in the Illgraben", "creators": [ { "creatorType": "author", "firstName": "G.L.", "lastName": "Bennett" }, { "creatorType": "author", "firstName": "P.", "lastName": "Molnar" }, { "creatorType": "author", "firstName": "B.W.", "lastName": "McArdell" }, { "creatorType": "author", "firstName": "F.", "lastName": "Schlunegger" }, { "creatorType": "author", "firstName": "P.", "lastName": "Burlando" } ], "abstractNote": "Abstract \nQuantification of the volumes of sediment removed by rock–slope failure and debris flows and identification of their coupling and controls are pertinent to understanding mountain basin sediment yield and landscape evolution. This study captures a multi-decadal period of hillslope erosion and channel change following an extreme rock avalanche in 1961 in the Illgraben, a catchment prone to debris flows in the Swiss Alps. We analyzed photogrammetrically-derived datasets of hillslope and channel erosion and deposition along with climatic and seismic variables for a 43 year period from 1963 to 2005. Based on these analyses we identify and discuss (1) patterns of hillslope production, channel transfer and catchment sediment yield, (2) their dominant interactions with climatic and seismic variables, and (3) the nature of hillslope–channel coupling and implications for sediment yield and landscape evolution in this mountain basin. \n \nOur results show an increase in the mean hillslope erosion rate in the 1980s from 0.24 ± 0.01 m yr− 1 to 0.42 ± 0.03 m yr− 1 that coincided with a significant increase in air temperature and decrease in snow cover depth and duration, which we presume led to an increase in the exposure of the slopes to thermal weathering processes. The combination of highly fractured slopes close to the threshold angle for failure, and multiple potential triggering mechanisms, means that it is difficult to identify an individual control on slope failure. On the other hand, the rate of channel change was strongly related to variables influencing runoff. A period of particularly high channel erosion rate of 0.74 ± 0.02 m yr− 1 (1992–1998) coincided with an increase in the frequency and magnitude of intense rainfall events. \n \nHillslope erosion exceeded channel erosion on average, indicative of a downslope-directed coupling relationship between hillslope and channel, and demonstrating the first order control of rock–slope failure on catchment sediment yield and landscape evolution.", "publicationTitle": "Geomorphology", "publisher": "", "place": "", "date": "avril 15, 2013", "volume": "188", "issue": "", "section": "", "partNumber": "", "partTitle": "", "pages": "68-82", "series": "", "seriesTitle": "", "seriesText": "", "journalAbbreviation": "Geomorphology", "DOI": "10.1016/j.geomorph.2012.11.029", "citationKey": "", "url": "http://www.sciencedirect.com/science/article/pii/S0169555X12005508", "accessDate": "2013-04-19T15:47:02Z", "PMID": "", "PMCID": "", "ISSN": "0169-555X", "archive": "", "archiveLocation": "", "shortTitle": "Sediment sources, source-to-sink fluxes and sedimentary budgets", "language": "", "libraryCatalog": "ScienceDirect", "callNumber": "", "rights": "", "extra": "", "tags": [ { "tag": "Climate change", "type": 1 }, { "tag": "Debris flows", "type": 1 }, { "tag": "Erosion and deposition", "type": 1 }, { "tag": "Geomorphic hillslope–channel coupling", "type": 1 }, { "tag": "Rock–slope failures", "type": 1 }, { "tag": "Thermal weathering", "type": 1 } ], "collections": [ "ZQFRKKRT" ], "relations": {}, "dateAdded": "2013-04-19T15:47:02Z", "dateModified": "2013-04-19T15:47:02Z" } }, { "key": "FJSQAQST", "version": 3382, "library": { "type": "group", "id": 4428, "name": "Eau et GEOpatrimoine-IGD", "links": { "alternate": { "href": "https://www.zotero.org/groups/eau_et_geopatrimoine-igd", "type": "text/html" } } }, "links": { "self": { "href": "https://api.zotero.org/groups/4428/items/FJSQAQST", "type": "application/json" }, "alternate": { "href": "https://www.zotero.org/groups/eau_et_geopatrimoine-igd/items/FJSQAQST", "type": "text/html" } }, "meta": { "createdByUser": { "id": 40833, "username": "CedocIGUL", "name": "Centre de documentation (UNIL-IGD, CH)", "links": { "alternate": { "href": "https://www.zotero.org/cedocigul", "type": "text/html" } } }, "creatorSummary": "Cavalli et al.", "parsedDate": "2013", "numChildren": 0 }, "data": { "key": "FJSQAQST", "version": 3382, "itemType": "journalArticle", "title": "Geomorphometric assessment of spatial sediment connectivity in small Alpine catchments", "creators": [ { "creatorType": "author", "firstName": "Marco", "lastName": "Cavalli" }, { "creatorType": "author", "firstName": "Sebastiano", "lastName": "Trevisani" }, { "creatorType": "author", "firstName": "Francesco", "lastName": "Comiti" }, { "creatorType": "author", "firstName": "Lorenzo", "lastName": "Marchi" } ], "abstractNote": "Complex and rugged topography induces large variations in erosion and sediment delivery in the headwaters of alpine catchments. An effective connection of hillslopes with the channel network results in highly efficient sediment transfer processes, such as debris flows. In contrast, morphological conditions producing decoupling of hillslopes from channels (e.g. glacial cirques) may exclude large areas of the catchment from sediment delivery to its lower parts. Moreover, an efficient connection between hillslopes and channel network does not always ensure an effective downstream transfer of sediment. Low-slope channel reaches (e.g. in hanging valleys) cause sediment deposition, which often results in changes of the sediment transport processes, typically from debris flow to streamflow with low bedload and suspended load rates. The availability of high-resolution digital terrain models, such as those derived from aerial LiDAR, improves our capability to quantify the topographic controls on sediment connectivity. A geomorphometric index, based on the approach by Borselli et al. (2008), was developed and applied to assess spatial sediment connectivity in two small catchments of the Italian Alps featuring contrasting morphological characteristics. The results of the geomorphometric analysis were checked against field evidences, showing good performance and thus potential usefulness of the index.", "publicationTitle": "Geomorphology", "publisher": "", "place": "", "date": "avril 15, 2013", "volume": "188", "issue": "", "section": "", "partNumber": "", "partTitle": "", "pages": "31-41", "series": "", "seriesTitle": "", "seriesText": "", "journalAbbreviation": "Geomorphology", "DOI": "10.1016/j.geomorph.2012.05.007", "citationKey": "", "url": "http://www.sciencedirect.com/science/article/pii/S0169555X12002267", "accessDate": "2013-04-19T15:46:16Z", "PMID": "", "PMCID": "", "ISSN": "0169-555X", "archive": "", "archiveLocation": "", "shortTitle": "Sediment sources, source-to-sink fluxes and sedimentary budgets", "language": "", "libraryCatalog": "ScienceDirect", "callNumber": "", "rights": "", "extra": "", "tags": [ { "tag": "Debris flow", "type": 1 }, { "tag": "Geomorphometry", "type": 1 }, { "tag": "High-resolution DTM", "type": 1 }, { "tag": "LiDAR", "type": 1 }, { "tag": "Sediment connectivity", "type": 1 } ], "collections": [ "ZQFRKKRT" ], "relations": {}, "dateAdded": "2013-04-19T15:46:16Z", "dateModified": "2013-04-19T15:46:16Z" } }, { "key": "BZCGI5A3", "version": 3377, "library": { "type": "group", "id": 4428, "name": "Eau et GEOpatrimoine-IGD", "links": { "alternate": { "href": "https://www.zotero.org/groups/eau_et_geopatrimoine-igd", "type": "text/html" } } }, "links": { "self": { "href": "https://api.zotero.org/groups/4428/items/BZCGI5A3", "type": "application/json" }, "alternate": { "href": "https://www.zotero.org/groups/eau_et_geopatrimoine-igd/items/BZCGI5A3", "type": "text/html" } }, "meta": { "createdByUser": { "id": 40833, "username": "CedocIGUL", "name": "Centre de documentation (UNIL-IGD, CH)", "links": { "alternate": { "href": "https://www.zotero.org/cedocigul", "type": "text/html" } } }, "creatorSummary": "Cerdan et al.", "parsedDate": "2012-11", "numChildren": 0 }, "data": { "key": "BZCGI5A3", "version": 3377, "itemType": "journalArticle", "title": "Contribution of diffuse hillslope erosion to the sediment export of French rivers", "creators": [ { "creatorType": "author", "firstName": "Olivier", "lastName": "Cerdan" }, { "creatorType": "author", "firstName": "Magalie", "lastName": "Delmas" }, { "creatorType": "author", "firstName": "Philippe", "lastName": "Négrel" }, { "creatorType": "author", "firstName": "Jean-Marie", "lastName": "Mouchel" }, { "creatorType": "author", "firstName": "Emmanuelle", "lastName": "Petelet-Giraud" }, { "creatorType": "author", "firstName": "Sébastien", "lastName": "Salvador-Blanes" }, { "creatorType": "author", "firstName": "Francesca", "lastName": "Degan" } ], "abstractNote": "Soil erosion is one of the major drivers of landscape evolution in Western Europe. However, depending on the land use characteristics and on the geological and topographical settings, miscellaneous forms of erosion may lead to a very diverse morphological evolution. A key element is the connection between the hillslope and the river. In this context, the objective of this study is to investigate to what extent eroded soil particles contribute to river sediment exports for the major French basins. The hillslope erosion rates are deduced from a distributed pan-European assessment of hillslope, rill, and interrill erosion by water, which was quantified by interpolation of erosion plot data as a function of topographical, land use, and pedological parameters. Sediment fluxes were mainly assessed from the French river quality database using an improved rating curve approach from the daily discharge data (IRCA), which allows estimation of the mean annual suspended sediment load. A similar approach based on the same datasets was used to calculate the mean annual dissolved load over the same period. The resulting mean annual suspended sediment loads show that French rivers export approximately 50 Mt of sediments per year to the seas, including ca. 17 Mt as particulate matter, corresponding to a specific sediment yield of ca. 0.4 t ha−1 yr−1. No relationship was found between the mass of the exported sediment and the size of the drainage basins, but large differences were observed between the different basins. For the Seine river basin and the Rhône river basin, the estimated average gross erosion rates are comparable, with ca. 1.14 t ha−1 yr−1 for the Rhone and ca. 1.80 t ha−1 yr−1 for the Seine. In contrast, the Rhône exports ca. 10 times more than the Seine River. The ratio of gross erosion to sediment exports calculated in this work ranges from 6.8% for the Seine to more than 100% for the Rhône. To explain these variations, we propose the use of indices that represent the landscape patchiness and connectivity.", "publicationTitle": "Comptes Rendus Geoscience", "publisher": "", "place": "", "date": "novembre 2012", "volume": "344", "issue": "11–12", "section": "", "partNumber": "", "partTitle": "", "pages": "636-645", "series": "", "seriesTitle": "", "seriesText": "", "journalAbbreviation": "Comptes Rendus Geoscience", "DOI": "10.1016/j.crte.2012.10.011", "citationKey": "", "url": "http://www.sciencedirect.com/science/article/pii/S1631071312001927", "accessDate": "2013-01-09T14:53:09Z", "PMID": "", "PMCID": "", "ISSN": "1631-0713", "archive": "", "archiveLocation": "", "shortTitle": "Erosion–Alteration: from fundamental mechanisms to geodynamic consequences (Ebelmen’s Symposium)", "language": "", "libraryCatalog": "ScienceDirect", "callNumber": "", "rights": "", "extra": "", "tags": [ { "tag": "Altération", "type": 1 }, { "tag": "Connectivity", "type": 1 }, { "tag": "Connectivité", "type": 1 }, { "tag": "Exportation de sédiments", "type": 1 }, { "tag": "France", "type": 1 }, { "tag": "Rivers", "type": 1 }, { "tag": "Rivières", "type": 1 }, { "tag": "Sediment export", "type": 1 }, { "tag": "Soil erosion", "type": 1 }, { "tag": "Weathering", "type": 1 }, { "tag": "Érosion du sol", "type": 1 } ], "collections": [ "ZQFRKKRT" ], "relations": {}, "dateAdded": "2013-01-09T14:53:09Z", "dateModified": "2013-01-09T14:53:09Z" } }, { "key": "2PWUF6RB", "version": 3375, "library": { "type": "group", "id": 4428, "name": "Eau et GEOpatrimoine-IGD", "links": { "alternate": { "href": "https://www.zotero.org/groups/eau_et_geopatrimoine-igd", "type": "text/html" } } }, "links": { "self": { "href": "https://api.zotero.org/groups/4428/items/2PWUF6RB", "type": "application/json" }, "alternate": { "href": "https://www.zotero.org/groups/eau_et_geopatrimoine-igd/items/2PWUF6RB", "type": "text/html" } }, "meta": { "createdByUser": { "id": 40833, "username": "CedocIGUL", "name": "Centre de documentation (UNIL-IGD, CH)", "links": { "alternate": { "href": "https://www.zotero.org/cedocigul", "type": "text/html" } } }, "creatorSummary": "Andermann et al.", "parsedDate": "2012-11", "numChildren": 0 }, "data": { "key": "2PWUF6RB", "version": 3375, "itemType": "journalArticle", "title": "Sediment transfer and the hydrological cycle of Himalayan rivers in Nepal", "creators": [ { "creatorType": "author", "firstName": "Christoff", "lastName": "Andermann" }, { "creatorType": "author", "firstName": "Stéphane", "lastName": "Bonnet" }, { "creatorType": "author", "firstName": "Alain", "lastName": "Crave" }, { "creatorType": "author", "firstName": "Philippe", "lastName": "Davy" }, { "creatorType": "author", "firstName": "Laurent", "lastName": "Longuevergne" }, { "creatorType": "author", "firstName": "Richard", "lastName": "Gloaguen" } ], "abstractNote": "We present an analysis of daily water discharge and suspended sediment concentration measurements for the three main drainage basins in Nepal, on the basis of recent published papers. We first show how precipitation-discharge data can be used to highlight the impact of groundwater storage on the annual hydrological cycle of Himalayan rivers. Then, we show how the concentration of suspended sediment in rivers varies at the year scale depending on the river discharge cycle, as well as how the release of groundwater impacts the concentration of materials in rivers. Finally, we propose a new conceptual model for the mobilization and transportation of material within the monsoonal discharge cycle in the central Himalayas.", "publicationTitle": "Comptes Rendus Geoscience", "publisher": "", "place": "", "date": "novembre 2012", "volume": "344", "issue": "11–12", "section": "", "partNumber": "", "partTitle": "", "pages": "627-635", "series": "", "seriesTitle": "", "seriesText": "", "journalAbbreviation": "Comptes Rendus Geoscience", "DOI": "10.1016/j.crte.2012.10.009", "citationKey": "", "url": "http://www.sciencedirect.com/science/article/pii/S1631071312001903", "accessDate": "2013-01-09T14:52:45Z", "PMID": "", "PMCID": "", "ISSN": "1631-0713", "archive": "", "archiveLocation": "", "shortTitle": "Erosion–Alteration: from fundamental mechanisms to geodynamic consequences (Ebelmen’s Symposium)", "language": "", "libraryCatalog": "ScienceDirect", "callNumber": "", "rights": "", "extra": "", "tags": [ { "tag": "Eau souterraine", "type": 1 }, { "tag": "Groundwater", "type": 1 }, { "tag": "Himalaya", "type": 1 }, { "tag": "Himalayas", "type": 1 }, { "tag": "Hydrologie", "type": 1 }, { "tag": "Hydrology", "type": 1 }, { "tag": "Monsoon", "type": 1 }, { "tag": "Mousson", "type": 1 }, { "tag": "Nepal", "type": 1 }, { "tag": "Népal", "type": 1 }, { "tag": "Sédiment", "type": 1 }, { "tag": "geomorphology", "type": 1 }, { "tag": "géomorphologie", "type": 1 }, { "tag": "sediment", "type": 1 } ], "collections": [ "ZQFRKKRT" ], "relations": {}, "dateAdded": "2013-01-09T14:52:45Z", "dateModified": "2013-01-09T14:52:45Z" } }, { "key": "TQTFUEMT", "version": 3375, "library": { "type": "group", "id": 4428, "name": "Eau et GEOpatrimoine-IGD", "links": { "alternate": { "href": "https://www.zotero.org/groups/eau_et_geopatrimoine-igd", "type": "text/html" } } }, "links": { "self": { "href": "https://api.zotero.org/groups/4428/items/TQTFUEMT", "type": "application/json" }, "alternate": { "href": "https://www.zotero.org/groups/eau_et_geopatrimoine-igd/items/TQTFUEMT", "type": "text/html" } }, "meta": { "createdByUser": { "id": 40833, "username": "CedocIGUL", "name": "Centre de documentation (UNIL-IGD, CH)", "links": { "alternate": { "href": "https://www.zotero.org/cedocigul", "type": "text/html" } } }, "creatorSummary": "Jones et al.", "parsedDate": "2010-02", "numChildren": 0 }, "data": { "key": "TQTFUEMT", "version": 3375, "itemType": "journalArticle", "title": "Geomorphological and sedimentological evidence for variations in Holocene flooding in Welsh river catchments", "creators": [ { "creatorType": "author", "firstName": "A.F.", "lastName": "Jones" }, { "creatorType": "author", "firstName": "P.A.", "lastName": "Brewer" }, { "creatorType": "author", "firstName": "M.G.", "lastName": "Macklin" } ], "abstractNote": "Valley floor geomorphology, sedimentology and radiocarbon dating have been used to reconstruct variations in flooding during the Holocene at six sites within the upper Severn, Teifi and Dee catchments in Wales, UK. High-magnitude palaeoflood deposits, for which ages were estimated, were identified at three floodbasin sites in the upper Severn and Teifi catchments. At the remaining sites fluvial discontinuities, indicative of episodes of increased flooding, were identified. Data from these six sites, and six additional sites studied previously, indicate that seven probably centennial length episodes of major flooding have occurred in Wales since c. 7000 cal BP. These flooding episodes occur at similar times to peaks in flood frequency within Great Britain as a whole.", "publicationTitle": "Global and Planetary Change", "publisher": "", "place": "", "date": "Février 2010", "volume": "70", "issue": "1-4", "section": "", "partNumber": "", "partTitle": "", "pages": "92-107", "series": "", "seriesTitle": "", "seriesText": "", "journalAbbreviation": "", "DOI": "10.1016/j.gloplacha.2009.11.010", "citationKey": "", "url": "http://www.sciencedirect.com/science/article/B6VF0-4XRCRT1-1/2/c6bbb7bb2df5b9dfef11ea7211cce071", "accessDate": "2010-02-22T11:04:53Z", "PMID": "", "PMCID": "", "ISSN": "0921-8181", "archive": "", "archiveLocation": "", "shortTitle": "", "language": "", "libraryCatalog": "ScienceDirect", "callNumber": "", "rights": "", "extra": "", "tags": [ { "tag": "Holocene", "type": 1 }, { "tag": "Wales", "type": 1 }, { "tag": "floodplain", "type": 1 }, { "tag": "geomorphology", "type": 1 }, { "tag": "palaeoflood", "type": 1 }, { "tag": "sediment", "type": 1 } ], "collections": [ "WN9F88J4", "ZQFRKKRT" ], "relations": {}, "dateAdded": "2010-02-22T11:04:53Z", "dateModified": "2012-11-07T16:18:03Z" } }, { "key": "THS35KD7", "version": 3357, "library": { "type": "group", "id": 4428, "name": "Eau et GEOpatrimoine-IGD", "links": { "alternate": { "href": "https://www.zotero.org/groups/eau_et_geopatrimoine-igd", "type": "text/html" } } }, "links": { "self": { "href": "https://api.zotero.org/groups/4428/items/THS35KD7", "type": "application/json" }, "alternate": { "href": "https://www.zotero.org/groups/eau_et_geopatrimoine-igd/items/THS35KD7", "type": "text/html" } }, "meta": { "createdByUser": { "id": 40833, "username": "CedocIGUL", "name": "Centre de documentation (UNIL-IGD, CH)", "links": { "alternate": { "href": "https://www.zotero.org/cedocigul", "type": "text/html" } } }, "creatorSummary": "Bauch and Hickin", "parsedDate": "2011-06-15", "numChildren": 0 }, "data": { "key": "THS35KD7", "version": 3357, "itemType": "journalArticle", "title": "Rate of floodplain reworking in response to increasing storm‐induced floods, Squamish River, south‐western British Columbia, Canada", "creators": [ { "creatorType": "author", "firstName": "Gregory D", "lastName": "Bauch" }, { "creatorType": "author", "firstName": "Edward J", "lastName": "Hickin" } ], "abstractNote": "Relations among hydroclimatic and channel planform changes on Squamish River are presented for the period 1956–2007. Squamish River basin occupies 3600 km2 of mountainous terrain in south-western British Columbia, about 50 km north of Vancouver. The magnitude, volume and duration of extreme floods (Q ≥ 1500 m3/s) exhibit respective temporal increases of 50, 450 and 300%. The increase in extreme floods is attributed to the intensification of late-season (August–December) Pacific storms that have produced increases in precipitation amounts, intensity and duration of respectively 340, 200 and 200% over the same period. Changes in floodplain-surface area calculated from the geographic information system (GIS) differencing of sequential large-scale aerial photographs indicate that the rate of geomorphic change in Squamish River has accelerated during the 1980s to the mid-1990s. Among four study reaches of varying planform, erosional, depositional and cumulative changes in floodplain surface-area have rapidly increased. Channel-change activity after 1980 has increased by a factor of two to six compared with the period prior to 1980. Erosion is currently outpacing deposition in the majority of study reaches. Although channel geometry generally exhibits no uniform pattern of response to the increase in extreme floods, the meandering reaches have straightened over the duration of the study period. The increase in the magnitude and duration of the annual flood appears to be the principal cause of this recent acceleration of channel change. Copyright © 2010 John Wiley & Sons, Ltd.", "publicationTitle": "Earth Surface Processes and Landforms", "publisher": "", "place": "", "date": "2011/06/15", "volume": "36", "issue": "7", "section": "", "partNumber": "", "partTitle": "", "pages": "872-884", "series": "", "seriesTitle": "", "seriesText": "", "journalAbbreviation": "", "DOI": "10.1002/esp.2115", "citationKey": "", "url": "http://onlinelibrary.wiley.com/doi/10.1002/esp.2115/abstract", "accessDate": "2011-06-14T11:28:35Z", "PMID": "", "PMCID": "", "ISSN": "1096-9837", "archive": "", "archiveLocation": "", "shortTitle": "", "language": "en", "libraryCatalog": "Wiley Online Library", "callNumber": "", "rights": "", "extra": "", "tags": [ { "tag": "Climate change", "type": 1 }, { "tag": "channel change", "type": 1 }, { "tag": "flood regime", "type": 1 } ], "collections": [ "ZQFRKKRT" ], "relations": {}, "dateAdded": "2011-06-14T11:28:35Z", "dateModified": "2012-11-07T16:18:03Z" } }, { "key": "KBRFAP5I", "version": 3357, "library": { "type": "group", "id": 4428, "name": "Eau et GEOpatrimoine-IGD", "links": { "alternate": { "href": "https://www.zotero.org/groups/eau_et_geopatrimoine-igd", "type": "text/html" } } }, "links": { "self": { "href": "https://api.zotero.org/groups/4428/items/KBRFAP5I", "type": "application/json" }, "alternate": { "href": "https://www.zotero.org/groups/eau_et_geopatrimoine-igd/items/KBRFAP5I", "type": "text/html" } }, "meta": { "createdByUser": { "id": 40833, "username": "CedocIGUL", "name": "Centre de documentation (UNIL-IGD, CH)", "links": { "alternate": { "href": "https://www.zotero.org/cedocigul", "type": "text/html" } } }, "creatorSummary": "Notebaert et al.", "parsedDate": "2011-03-01", "numChildren": 0 }, "data": { "key": "KBRFAP5I", "version": 3357, "itemType": "journalArticle", "title": "Modeling the sensitivity of sediment and water runoff dynamics to Holocene climate and land use changes at the catchment scale", "creators": [ { "creatorType": "author", "firstName": "Bastiaan", "lastName": "Notebaert" }, { "creatorType": "author", "firstName": "Gert", "lastName": "Verstraeten" }, { "creatorType": "author", "firstName": "Philip", "lastName": "Ward" }, { "creatorType": "author", "firstName": "Hans", "lastName": "Renssen" }, { "creatorType": "author", "firstName": "Anton", "lastName": "Van Rompaey" } ], "abstractNote": "An increasing number of studies have indicated that soil erosion, sediment redistribution and water discharge during the Holocene have varied greatly under influence of environmental changes. In this paper we have used a modeling approach to study the driving forces for soil erosion and sediment redistribution on the one hand, and water discharge on the other hand, during the Holocene for the Belgian Dijle catchment.\nSoil erosion and sediment redistribution was modeled using the spatially distributed Watem/Sedem model. Several scenarios of past land use and climate were used to model soil erosion, colluvial sedimentation and sediment export to the fluvial system, and those scenarios were combined with a sensitivity analysis. Modeling results are validated based on an available time differentiated field-based sediment budget. Water discharge was modeled using the spatially distributed STREAM model with a daily time step. The model was calibrated based on contemporary discharge data. The results indicate that soil erosion has increased between the early Holocene and the current situation by ca. 9% due to climatic variations, and by ca. 6000% due to changes in land use. The average discharge has increased by ca. 7%, mainly due to land use changes, and the discharge also shows more peaks. The decrease in cropland area and increase in built up area since 1775 CE has resulted in a decrease in soil erosion and in a further increase in discharge, showing the difference in sensitivity of both processes to land use changes.", "publicationTitle": "Geomorphology", "publisher": "", "place": "", "date": "Mars 1, 2011", "volume": "126", "issue": "1-2", "section": "", "partNumber": "", "partTitle": "", "pages": "18-31", "series": "", "seriesTitle": "", "seriesText": "", "journalAbbreviation": "", "DOI": "10.1016/j.geomorph.2010.08.016", "citationKey": "", "url": "http://www.sciencedirect.com/science/article/B6V93-511TN6P-6/2/791e8e54742d32b95b330c033a8fdba3", "accessDate": "2011-01-11T19:52:09Z", "PMID": "", "PMCID": "", "ISSN": "0169-555X", "archive": "", "archiveLocation": "", "shortTitle": "", "language": "", "libraryCatalog": "ScienceDirect", "callNumber": "", "rights": "", "extra": "", "tags": [ { "tag": "Belgium", "type": 1 }, { "tag": "Climate change", "type": 1 }, { "tag": "Land use change", "type": 1 }, { "tag": "Sediment dynamics", "type": 1 }, { "tag": "Water runoff", "type": 1 }, { "tag": "modeling", "type": 1 } ], "collections": [ "ZQFRKKRT" ], "relations": {}, "dateAdded": "2011-01-11T19:52:09Z", "dateModified": "2012-11-07T16:18:03Z" } }, { "key": "P3A7A26T", "version": 3357, "library": { "type": "group", "id": 4428, "name": "Eau et GEOpatrimoine-IGD", "links": { "alternate": { "href": "https://www.zotero.org/groups/eau_et_geopatrimoine-igd", "type": "text/html" } } }, "links": { "self": { "href": "https://api.zotero.org/groups/4428/items/P3A7A26T", "type": "application/json" }, "alternate": { "href": "https://www.zotero.org/groups/eau_et_geopatrimoine-igd/items/P3A7A26T", "type": "text/html" } }, "meta": { "createdByUser": { "id": 40833, "username": "CedocIGUL", "name": "Centre de documentation (UNIL-IGD, CH)", "links": { "alternate": { "href": "https://www.zotero.org/cedocigul", "type": "text/html" } } }, "creatorSummary": "Phillips", "parsedDate": "2009", "numChildren": 0 }, "data": { "key": "P3A7A26T", "version": 3357, "itemType": "journalArticle", "title": "Landscape evolution space and the relative importance of geomorphic processes and controls", "creators": [ { "creatorType": "author", "firstName": "Jonathan D.", "lastName": "Phillips" } ], "abstractNote": "The concept of landscape evolution space (LES) is introduced as a tool for assessing landscapes and geomorphic systems, intended to be a systematic means for assessing the various factors that contribute to the potential for change in geomorphic systems. The LES conceptual model is based on the energy and mass available to drive and accommodate landscape evolution. An n-dimensional landscape evolution space is defined not only by spatial coordinates, but also by the availability of mass and energy. The LES is thus a space or hypervolume representing the resources available for geomorphic evolution and landscape change. An expression for LES is derived based on elevation, material density, surface area, and inputs of solar, meteoric, and biological energy and mass. Though primarily an heuristic device, the LES model can be used to address concrete problems. Two examples are given. In one, increased surface area due to topographic roughening and dissection of an incised plateau is found to only slightly offset erosional removals of mass in terms of the magnitude of the LES. In the other, sensitivity of coastal plain rivers to several impacts of sea level and climate change is explored. The LES model also leads to the concept of a geomorphological niche, representing the resources available to drive or support a specific process or suite of processes. Considerations of landscape evolution have traditionally focused on the interplay of endogenic vs. exogenic processes, uplift vs. denudation, or soil formation vs. erosion. The LES model explicitly broadens the conceptual framework of landscape evolution beyond the traditional dialectics. Keywords: Landscape evolution space; Geomorphological niche; Geomorphic system; Cumberland Plateau; Climate change", "publicationTitle": "Geomorphology", "publisher": "", "place": "", "date": "2009", "volume": "109", "issue": "3-4", "section": "", "partNumber": "", "partTitle": "", "pages": "79-85", "series": "", "seriesTitle": "", "seriesText": "", "journalAbbreviation": "", "DOI": "10.1016/j.geomorph.2009.01.007", "citationKey": "", "url": "http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6V93-4VG7MN2-1&_user=10&_coverDate=08%2F15%2F2009&_rdoc=1&_fmt=&_orig=search&_sort=d&_docanchor=&view=c&_acct=C000050221&_version=1&_urlVersion=0&_userid=10&md5=9c74c191321c751563b32aaf9a42c7a6", "accessDate": "2009-08-31T13:27:34Z", "PMID": "", "PMCID": "", "ISSN": "", "archive": "", "archiveLocation": "", "shortTitle": "", "language": "", "libraryCatalog": "ScienceDirect", "callNumber": "", "rights": "", "extra": "", "tags": [ { "tag": "Climate change", "type": 1 }, { "tag": "Cumberland Plateau", "type": 1 }, { "tag": "Geomorphic system", "type": 1 }, { "tag": "Geomorphological niche", "type": 1 }, { "tag": "Landscape evolution space", "type": 1 } ], "collections": [ "ZQFRKKRT" ], "relations": {}, "dateAdded": "2009-09-02T13:49:03Z", "dateModified": "2012-11-07T16:18:03Z" } }, { "key": "3SD6W5A7", "version": 3, "library": { "type": "group", "id": 4428, "name": "Eau et GEOpatrimoine-IGD", "links": { "alternate": { "href": "https://www.zotero.org/groups/eau_et_geopatrimoine-igd", "type": "text/html" } } }, "links": { "self": { "href": "https://api.zotero.org/groups/4428/items/3SD6W5A7", "type": "application/json" }, "alternate": { "href": "https://www.zotero.org/groups/eau_et_geopatrimoine-igd/items/3SD6W5A7", "type": "text/html" } }, "meta": { "createdByUser": { "id": 40833, "username": "CedocIGUL", "name": "Centre de documentation (UNIL-IGD, CH)", "links": { "alternate": { "href": "https://www.zotero.org/cedocigul", "type": "text/html" } } }, "creatorSummary": "Rigot", "parsedDate": "2010-04-01", "numChildren": 0 }, "data": { "key": "3SD6W5A7", "version": 3, "itemType": "journalArticle", "title": "Dynamique de la rivière Poulvar et morphogenèse de la plaine de Tang-i Bulaghi (Fars, Iran) à l’Holocène. Premiers résultats", "creators": [ { "creatorType": "author", "firstName": "Jean-Baptiste", "lastName": "Rigot" }, { "creatorType": "contributor", "firstName": "Jean-Claude", "lastName": "Thouret" }, { "creatorType": "contributor", "firstName": "Éric", "lastName": "Fouache" }, { "creatorType": "contributor", "firstName": "", "lastName": "Revues. org" } ], "abstractNote": "L’étude géomorphologique d’une partie du bassin-versant du Poulvar (Fars, Iran) a mis en évidence une série de nappes alluviales holocènes. La plus remarquable forme une terrasse de 17 m d’épaisseur. Constituée principalement de limons, cette formation s’est mise en place durant l’Holocène ancien et moyen. Une telle formation est inattendue dans le milieu montagnard régional. L’étude montre que le cadre structural et les forçages climatiques en sont probablement à l’origine. D’une part, cette sédimentation est intervenue dans le contexte relativement plus humide de l’Optimum Climatique Holocène, qui a favorisé le décapage des sols lœssiques de versants. D’autre part, les plaines d’origine structurale, situées à l’aval du bassin-versant, expliquent le haut niveau de base du cours d’eau, sa faible pente longitudinale et la tendance à l’aggradation. À cet épisode fait suite une longue période dominée par une dynamique d’incision, interrompue par deux phases de sédimentation. Les données sont encore limitées pour expliquer cette évolution holocène qui a probablement une double origine : le retour de l’aridité autour de 6000 BP et l’exhaussement du Zagros.;The geomorphologic study of a part of the Poulvar River basin (Fars, Iran) has brought to light a series of Holocene deposits. The main deposit is 17 m thick, consisting mainly of silty sediments deposited during the early and middle Holocene. These deposits are unusual in such a mountainous environment. The study shows that structural and climate factors could explain this sedimentation. On the one hand, it occurred during the relatively humid Holocene Climatic Optimum, which may have contributed to soil erosion. On the other hand, the plains of structural origin located downstream from the Poulvar basin would explain the high base level of the river, the low incline of the longitudinal profile and the tendency towards sedimentation. This major episode is followed by a long period of erosion with only two phases of sedimentation. Data are still lacking to explain this phenomenon, which probably had two major causes: the return of aridity at about 6000 BP and the Zagros uplift.", "publicationTitle": "Géomorphologie : relief, processus, environnement", "publisher": "", "place": "", "date": "2010-04-01", "volume": "", "issue": "1/2010", "section": "", "partNumber": "", "partTitle": "", "pages": "57-72", "series": "", "seriesTitle": "Varia", "seriesText": "", "journalAbbreviation": "", "DOI": "", "citationKey": "", "url": "http://geomorphologie.revues.org/index7813.html", "accessDate": "2010-05-12T14:13:13Z", "PMID": "", "PMCID": "", "ISSN": "1266-5304", "archive": "", "archiveLocation": "", "shortTitle": "", "language": "fr", "libraryCatalog": "Revues.org", "callNumber": "", "rights": "© Groupe français de géomorphologie", "extra": "IntroductionCet article présente les questions soulevées par l’étude géomorphologique de la région de Pasargades-Tang-i Bulaghi et les premiers résultats obtenus. L’objectif de cette recherche est de contribuer à la connaissance de l’évolution du paysage montagnard à l’Holocène dans l’Iran semi-aride et plus largement, dans les régions proche-orientales continentales en domaine semi-aride. Dans ce cadre, l’étude fait suite à d’autres travaux de géomorphologie réalisés en Iran ces dernières année (...)", "tags": [ { "tag": "Holocene", "type": 1 }, { "tag": "Holocène", "type": 1 }, { "tag": "Iran", "type": 1 }, { "tag": "aridity", "type": 1 }, { "tag": "aridité", "type": 1 }, { "tag": "dynamique fluviale", "type": 1 }, { "tag": "erosion", "type": 1 }, { "tag": "fluvial dynamics", "type": 1 }, { "tag": "limons", "type": 1 }, { "tag": "morphostructure", "type": 1 }, { "tag": "silt", "type": 1 } ], "collections": [ "ZQFRKKRT" ], "relations": {}, "dateAdded": "2010-05-12T14:13:13Z", "dateModified": "2012-11-07T16:18:03Z" } }, { "key": "24T3499N", "version": 2, "library": { "type": "group", "id": 4428, "name": "Eau et GEOpatrimoine-IGD", "links": { "alternate": { "href": "https://www.zotero.org/groups/eau_et_geopatrimoine-igd", "type": "text/html" } } }, "links": { "self": { "href": "https://api.zotero.org/groups/4428/items/24T3499N", "type": "application/json" }, "alternate": { "href": "https://www.zotero.org/groups/eau_et_geopatrimoine-igd/items/24T3499N", "type": "text/html" } }, "meta": { "createdByUser": { "id": 40833, "username": "CedocIGUL", "name": "Centre de documentation (UNIL-IGD, CH)", "links": { "alternate": { "href": "https://www.zotero.org/cedocigul", "type": "text/html" } } }, "creatorSummary": "Grivel and Gautier", "parsedDate": "2012-07-24", "numChildren": 0 }, "data": { "key": "24T3499N", "version": 2, "itemType": "journalArticle", "title": "Mise en place des îles fluviales en Loire moyenne, du 19e siècle à aujourd’hui", "creators": [ { "creatorType": "author", "firstName": "Stéphane", "lastName": "Grivel" }, { "creatorType": "author", "firstName": "Emmanuèle", "lastName": "Gautier" } ], "abstractNote": "Dès sa confluence avec l’Allier, sur près de 150 km, la Loire moyenne se caractérise par un lit pris dans un semi-endiguement et encombré d’îles. Les îles boisées sont omniprésentes dans le paysage fluvial et sont les lieux de la végétalisation active du lit. Cet article propose de mettre à jour les connaissances sur ces formes fluviales prégnantes, leur fonctionnement et leur rythme de développement. La mise en place récente d’un système en anabranches de la Loire moyenne apporte un éclairage nouveau sur la végétalisation du corridor ligérien, laquelle est liée à la co-évolution des usages sociétaux et de la morphologie du lit. Contrainte par les levées de rive de gauche, la bande active principale n’a eu de cesse de migrer latéralement au sein de son espace de mobilité réduit. Ces basculements ont permis l’installation de grandes zones de sédimentation sur lesquelles la végétation s’est installée et a favorisé le développement de grandes îles. L’existence des îles, majoritairement en position latérale, dépend aujourd’hui du devenir des bras secondaires. Les îles ralentissent les écoulements, jouent un rôle majeur dans la rétention des sédiments et participent au déséquilibre sédimentaire du fleuve. L’installation du système en anabranches révèle le réajustement en cours de la Loire moyenne dont les îles sont d’excellents indicateurs biogéomorphologiques. Cette étude complète les recherches engagées sur les îles fluviales et les corridors fluviaux végétalisés d’Europe de l’Ouest.", "publicationTitle": "Cybergeo : European Journal of Geography", "publisher": "", "place": "", "date": "2012/07/24", "volume": "", "issue": "", "section": "", "partNumber": "", "partTitle": "", "pages": "", "series": "", "seriesTitle": "", "seriesText": "", "journalAbbreviation": "", "DOI": "10.4000/cybergeo.25451", "citationKey": "", "url": "http://cybergeo.revues.org/25451", "accessDate": "2012-08-13T14:30:38Z", "PMID": "", "PMCID": "", "ISSN": "1278-3366", "archive": "", "archiveLocation": "", "shortTitle": "", "language": "fr", "libraryCatalog": "cybergeo.revues.org", "callNumber": "", "rights": "© CNRS-UMR Géographie-cités 8504", "extra": "", "tags": [ { "tag": "Loire", "type": 1 }, { "tag": "analyse spatio-temporelle", "type": 1 }, { "tag": "changement environnemental", "type": 1 }, { "tag": "géomorphologie fluviale", "type": 1 }, { "tag": "hydrosystème", "type": 1 }, { "tag": "érosion/sédimentation", "type": 1 }, { "tag": "îles", "type": 1 } ], "collections": [ "ZQFRKKRT" ], "relations": {}, "dateAdded": "2012-08-13T14:30:38Z", "dateModified": "2012-11-07T16:18:03Z" } }, { "key": "BQ3I593N", "version": 2, "library": { "type": "group", "id": 4428, "name": "Eau et GEOpatrimoine-IGD", "links": { "alternate": { "href": "https://www.zotero.org/groups/eau_et_geopatrimoine-igd", "type": "text/html" } } }, "links": { "self": { "href": "https://api.zotero.org/groups/4428/items/BQ3I593N", "type": "application/json" }, "alternate": { "href": "https://www.zotero.org/groups/eau_et_geopatrimoine-igd/items/BQ3I593N", "type": "text/html" } }, "meta": { "createdByUser": { "id": 40833, "username": "CedocIGUL", "name": "Centre de documentation (UNIL-IGD, CH)", "links": { "alternate": { "href": "https://www.zotero.org/cedocigul", "type": "text/html" } } }, "creatorSummary": "Colombera and Bersezio", "parsedDate": "2011-09-30", "numChildren": 0 }, "data": { "key": "BQ3I593N", "version": 2, "itemType": "journalArticle", "title": "Impact of the magnitude and frequency of debris‐flow events on the evolution of an alpine alluvial fan during the last two centuries: responses to natural and anthropogenic controls", "creators": [ { "creatorType": "author", "firstName": "Luca", "lastName": "Colombera" }, { "creatorType": "author", "firstName": "Riccardo", "lastName": "Bersezio" } ], "abstractNote": "The dynamics and the surface evolution of a post-LGM debris-flow-dominated alluvial fan (Tartano alluvial fan), which lies on the floor of an alpine valley (Valtellina, Northern Italy), have been investigated by means of an integrated study comprising geomorphological field work, a sedimentological study, photointerpretation, quantitative geomorphology, analysis of ancient to modern cartography and consultation of historical documents and records. The fan catchment meteoclimatic, geological and geomorphological characteristics result in fast rates of geomorphic reorganization of the fan surface (2 km2). The dynamics of the fan are determined by the alternation of low-return period catastrophic alluvial events dominated by non-cohesive debris flows triggered by extreme rainstorms which caused aggradation and steepening of the fan and avulsion of its main channel, with periods of low to moderate streamflow discharge punctuated by low- to intermediate-magnitude flood events, causing slower but steady topographic reworking. The most ancient parts of the fan surface date back at least to the first half of the 19th century, but most of the fan surface has been restructured after 1911, mainly during the debris-flow-dominated events of 1911 and 1987. Phases of rapid fan toe incision and fan degradation have been recognized; since the 1930s or 1940s, the Tartano fan has been subjected to a state of deep entrenchment and narrowing of the main trunk channel and distributary area. Post-Little Ice Age climate change and present-day surface uplift rates have been considered as possible explanations for the observed geomorphic evolution, but tectonic or climatic controls cannot account for the order of magnitude of the erosional pace. Anthropogenic controls plausibly override the natural ones: in particular, the building of a dam in the late 1920s, about 2 km upstream of the fan, seems to have triggered fan dissection, having altered the sediment discharge through sediment retention. Copyright © 2011 John Wiley & Sons, Ltd.", "publicationTitle": "Earth Surface Processes and Landforms", "publisher": "", "place": "", "date": "2011/09/30", "volume": "36", "issue": "12", "section": "", "partNumber": "", "partTitle": "", "pages": "1632-1646", "series": "", "seriesTitle": "", "seriesText": "", "journalAbbreviation": "", "DOI": "10.1002/esp.2178", "citationKey": "", "url": "http://onlinelibrary.wiley.com/doi/10.1002/esp.2178/abstract", "accessDate": "2011-11-21T14:51:35Z", "PMID": "", "PMCID": "", "ISSN": "1096-9837", "archive": "", "archiveLocation": "", "shortTitle": "Impact of the magnitude and frequency of debris‐flow events on the evolution of an alpine alluvial fan during the last two centuries", "language": "en", "libraryCatalog": "Wiley Online Library", "callNumber": "", "rights": "", "extra": "", "tags": [ { "tag": "Alps", "type": 1 }, { "tag": "Debris flow", "type": 1 }, { "tag": "Little Ice Age Valtellina Italy", "type": 1 }, { "tag": "alluvial fans", "type": 1 } ], "collections": [ "ZQFRKKRT" ], "relations": {}, "dateAdded": "2011-11-21T14:51:35Z", "dateModified": "2012-11-07T16:18:03Z" } }, { "key": "ZRP4I7PR", "version": 2, "library": { "type": "group", "id": 4428, "name": "Eau et GEOpatrimoine-IGD", "links": { "alternate": { "href": "https://www.zotero.org/groups/eau_et_geopatrimoine-igd", "type": "text/html" } } }, "links": { "self": { "href": "https://api.zotero.org/groups/4428/items/ZRP4I7PR", "type": "application/json" }, "alternate": { "href": "https://www.zotero.org/groups/eau_et_geopatrimoine-igd/items/ZRP4I7PR", "type": "text/html" } }, "meta": { "createdByUser": { "id": 40833, "username": "CedocIGUL", "name": "Centre de documentation (UNIL-IGD, CH)", "links": { "alternate": { "href": "https://www.zotero.org/cedocigul", "type": "text/html" } } }, "creatorSummary": "Rey", "parsedDate": "2010-03-01", "numChildren": 0 }, "data": { "key": "ZRP4I7PR", "version": 2, "itemType": "journalArticle", "title": "Modalités de remblaiement sédimentaire des paléochenaux holocènes identifiés dans la partie occidentale du delta du Rhône (Petite Camargue, France)", "creators": [ { "creatorType": "author", "firstName": "Tony", "lastName": "Rey" } ], "abstractNote": "Cet article est une synthèse des résultats géomorphologiques et paléoenvironnementaux obtenus sur cinq paléochenaux reconnus sur la partie occidentale du delta rhodanien (Rey, 2006). L’historiographie et la chronologie des chenaux abandonnés sont succinctement présentées, l’accent est mis sur les modalités d’avulsion des chenaux, lesquels régissent en partie l’évolution de la plaine deltaïque. Le remplissage sédimentaire des chenaux après recoupement évoque des fluctuations hydro-sédimentaires et l’influence des processus littoraux (morphologie du rivage, dynamiques des passes, variations du biseau salé…). La stratigraphie des colmatages alluviaux révèle aussi la modification du milieu fluvial initial en un milieu aquatique plus ou moins saumâtre favorable à l’installation d’un écosystème lagunaire et marin. Enfin, la configuration des rivages et les dynamiques marines au droit des embouchures au moment où se sont écoulés les chenaux puis au cours de leur colmatage ont grandement influencé les modes de sédimentation à l’intérieur de ceux-ci (engorgement sableux à l’embouchure, passe fermée, diminution du gradient hydraulique…). Les enregistrements sédimentaires évoquent surtout des ambiances locales, et en contexte deltaïque où les effets de site paraissent majeurs, toute la difficulté réside alors dans la corrélation des données à l’échelle de la plaine deltaïque.;This paper points out the results of geomorphologic and palaeoenvironmental researchs obtained on the sedimentary fill of five paleochannels recognized on the western part of the Rhone Delta (Rey, 2006). The historiography and the chronology of the abandoned channels are briefly presented, the accent is put on the modalities of the channel avulsions which govern partially the evolution of the deltaic plain. The sedimentary filling of paleochannels shows hydro-sedimentary fluctuations and influence of the littoral processes (morphology of the littoral, dynamics of the pass, variations of the salty bevel…). The stratigraphy of the sedimentary fillings also reveals the modification of the initial river environment in a more or less brackish aquatic environment favorable to the installation of a laguno-marine ecosystem. At least, the configuration of the coast and the marine dynamics largely influenced the modes of sedimentation inside these (sandy deposits in the mouth, the closed mouth, decrease of the hydraulic gradient…). The sedimentary recordings present especially local atmospheres and in context deltaic where the effects of site seem major, all the difficulty lies then in the correlation of the data on the scale of the deltaic plain.", "publicationTitle": "Quaternaire", "publisher": "", "place": "", "date": "2010-03-01", "volume": "", "issue": "", "section": "", "partNumber": "", "partTitle": "", "pages": "", "series": "", "seriesTitle": "", "seriesText": "", "journalAbbreviation": "", "DOI": "", "citationKey": "", "url": "http://quaternaire.revues.org/index5483.html", "accessDate": "2010-03-05T12:06:37Z", "PMID": "", "PMCID": "", "ISSN": "", "archive": "", "archiveLocation": "", "shortTitle": "", "language": "", "libraryCatalog": "Revues.org", "callNumber": "", "rights": "", "extra": "", "tags": [ { "tag": "Holocene", "type": 1 }, { "tag": "Rhone", "type": 1 }, { "tag": "delta", "type": 1 }, { "tag": "palaeoenvironment", "type": 1 }, { "tag": "paleochannel", "type": 1 } ], "collections": [ "WN9F88J4", "ZQFRKKRT" ], "relations": {}, "dateAdded": "2010-03-05T12:06:37Z", "dateModified": "2012-11-07T16:18:03Z" } }, { "key": "8B2GR7IZ", "version": 1, "library": { "type": "group", "id": 4428, "name": "Eau et GEOpatrimoine-IGD", "links": { "alternate": { "href": "https://www.zotero.org/groups/eau_et_geopatrimoine-igd", "type": "text/html" } } }, "links": { "self": { "href": "https://api.zotero.org/groups/4428/items/8B2GR7IZ", "type": "application/json" }, "alternate": { "href": "https://www.zotero.org/groups/eau_et_geopatrimoine-igd/items/8B2GR7IZ", "type": "text/html" } }, "meta": { "createdByUser": { "id": 40833, "username": "CedocIGUL", "name": "Centre de documentation (UNIL-IGD, CH)", "links": { "alternate": { "href": "https://www.zotero.org/cedocigul", "type": "text/html" } } }, "creatorSummary": "Bkhairi", "parsedDate": "2012-02-26", "numChildren": 0 }, "data": { "key": "8B2GR7IZ", "version": 1, "itemType": "journalArticle", "title": "Suffosion et érosion hydrique en milieux semi-arides, le cas des Hautes Steppes tunisiennes (Tunisie centrale)", "creators": [ { "creatorType": "author", "firstName": "Amor", "lastName": "Bkhairi" } ], "abstractNote": "L'érosion hydrique est très active dans la région des Hautes Steppes tunisiennes, particulièrement dans les plaines alluviales où elle est très largement commandée par la suffosion. Cette dynamique érosive représente une menace sérieuse pour les terres agricoles. Les phénomènes érosifs liés à la suffosion provoquent des ravinements, des sapements de berge et l'élargissement de la section des oueds. Une cartographie morphodynamique détaillée, appuyée sur une prospection fine du terrain, l'exploitation de données spatiales multi-dates et l'étude de quelques cas, montre du reste la forte sensibilité de la région à l'érosion hydrique liée à la suffosion. Les formes de ravinement et le rythme des incisions linéaires mis en lumière par une étude diachronique de photographies aériennes orthorectifiées, pose le problème des facteurs de cette évolution accélérée : agressivité des pluies, érodibilité des sols et des formations à l'affleurement, inclinaison des pentes, modestie du couvert végétal et action anthropique inadaptée. ;Hydric erosion is very active in the Upper Steppes area of Tunisia chiefly on the alluvial floodplains where it is largely controlled by suffusion. This erosive dynamic represents a threat for the agricultural lands. The erosive phenomena related to suffusion, causes gullying, banks undermining and enlargement of the section of wadis. A morphodynamic mapping based on field-observations, the exploitation of aerial photos multi-date data, and the study of some examples put moreover in evidence the sensibility of the area to erosion phenomena in relation with suffusion. The forms of gullying and a comparative study of orthorectified air photographs pose the problem of the factors of this accelerated evolution: rainfall aggressivity, soil erodibility, inclination of the slopes, weakness of the vegetal cover and inappropriate human activities.", "publicationTitle": "Physio-Géo", "publisher": "", "place": "", "date": "2012-02-26", "volume": "", "issue": "Volume 6", "section": "", "partNumber": "", "partTitle": "", "pages": "1-22", "series": "", "seriesTitle": "varia", "seriesText": "", "journalAbbreviation": "", "DOI": "", "citationKey": "", "url": "http://physio-geo.revues.org/2246", "accessDate": "2012-02-28T11:24:55Z", "PMID": "", "PMCID": "", "ISSN": "1958-573X", "archive": "", "archiveLocation": "", "shortTitle": "", "language": "fr", "libraryCatalog": "Revues.org", "callNumber": "", "rights": "Tous droits réservés", "extra": "I - IntroductionLes terres agricoles en milieux semi-arides de l'Afrique du Nord souffrent aujourd'hui d'une crise environnementale, dont l'érosion hydrique constitue la manifestation la plus spectaculaire (H. ATTIA, 1977 ; A. HAMZA, 1988 ;H. AMIRÈCHE, 1994 ; A. LAOUINA, 1995 ; L. KOURI et al., 1997 ; A. TRIBAK, 1997 ; H. EL ABBASSI, 1999 ; A. SADIKI et al. 2004 ; A. BOUCHETATA et T. BOUCHETATA, 2006 ; É. GAUCHE, 2006 ; A. BANNARI et al. 2007). En Tunisie centrale, les terres agricoles et syl...", "tags": [ { "tag": "Hautes Steppes", "type": 1 }, { "tag": "Tunisie centrale", "type": 1 }, { "tag": "Upper Steppes", "type": 1 }, { "tag": "cartographie morphodynamique", "type": 1 }, { "tag": "central Tunisia", "type": 1 }, { "tag": "comparative study", "type": 1 }, { "tag": "gullying", "type": 1 }, { "tag": "hypodermic flow", "type": 1 }, { "tag": "morphodynamic mapping", "type": 1 }, { "tag": "ravinement", "type": 1 }, { "tag": "suffosion", "type": 1 }, { "tag": "suffusion", "type": 1 }, { "tag": "écoulement hypodermique", "type": 1 }, { "tag": "étude diachronique", "type": 1 } ], "collections": [ "I2BAT6CT", "ZQFRKKRT" ], "relations": {}, "dateAdded": "2012-02-28T11:24:55Z", "dateModified": "2012-11-07T16:18:03Z" } }, { "key": "JT64F3F6", "version": 1, "library": { "type": "group", "id": 4428, "name": "Eau et GEOpatrimoine-IGD", "links": { "alternate": { "href": "https://www.zotero.org/groups/eau_et_geopatrimoine-igd", "type": "text/html" } } }, "links": { "self": { "href": "https://api.zotero.org/groups/4428/items/JT64F3F6", "type": "application/json" }, "alternate": { "href": "https://www.zotero.org/groups/eau_et_geopatrimoine-igd/items/JT64F3F6", "type": "text/html" } }, "meta": { "createdByUser": { "id": 40833, "username": "CedocIGUL", "name": "Centre de documentation (UNIL-IGD, CH)", "links": { "alternate": { "href": "https://www.zotero.org/cedocigul", "type": "text/html" } } }, "creatorSummary": "Dade et al.", "parsedDate": "2011-03-01", "numChildren": 0 }, "data": { "key": "JT64F3F6", "version": 1, "itemType": "journalArticle", "title": "Sediment transport constraints on river response to regulation", "creators": [ { "creatorType": "author", "firstName": "W.B.", "lastName": "Dade" }, { "creatorType": "author", "firstName": "C.E.", "lastName": "Renshaw" }, { "creatorType": "author", "firstName": "F.J.", "lastName": "Magilligan" } ], "abstractNote": "We demonstrate that alluvial channel response to regulation depends on the characteristic mode of sediment transport in a channel and, thus, for a channel in supply-transport equilibrium, on the caliber of sediment mantling the channel bed, as well as changes in characteristic water discharge and sediment load. We find that regulated, coarse gravel- and cobble-bed alluvial rivers dominated by bedload transport are predicted and observed to preserve the value of a dimensionless ratio of characteristic water discharge, channel slope, width, and size of sedimentary particles mantling the bed associated with the critical conditions required for the onset of significant sediment transport. The covariant geomorphic adjustment of such rivers to regulation is independent of the degree of sediment impoundment, although the nature and rate of changes in any specific characteristic appear to be sensitive to changes in sediment supply. In contrast, covariant geomorphic changes in sand- and fine gravel-bed alluvial rivers dominated by weak suspension transport are predicted and observed to be dependent on the degree of sediment impoundment and commensurate with the change in the sediment concentration of characteristic, formative flows. In both cases, specific geomorphic characteristics of alluvial rivers exhibit varied responses to regulation in different rivers, but across all rivers a systematic covariation in channel slope, width, and grain size is observed that, for a given mode of sediment transport, preserves a characteristic value of the Shields number.", "publicationTitle": "Geomorphology", "publisher": "", "place": "", "date": "Mars 1, 2011", "volume": "126", "issue": "1-2", "section": "", "partNumber": "", "partTitle": "", "pages": "245-251", "series": "", "seriesTitle": "", "seriesText": "", "journalAbbreviation": "", "DOI": "10.1016/j.geomorph.2010.11.007", "citationKey": "", "url": "http://www.sciencedirect.com/science/article/B6V93-51JF7X6-1/2/bb5d06dfab25409be338da3d144e8b8a", "accessDate": "2011-01-11T19:52:53Z", "PMID": "", "PMCID": "", "ISSN": "0169-555X", "archive": "", "archiveLocation": "", "shortTitle": "", "language": "", "libraryCatalog": "ScienceDirect", "callNumber": "", "rights": "", "extra": "", "tags": [ { "tag": "Bedload", "type": 1 }, { "tag": "Channel geometry", "type": 1 }, { "tag": "Competency", "type": 1 }, { "tag": "Dams", "type": 1 }, { "tag": "Flow regulation", "type": 1 }, { "tag": "River restoration", "type": 1 }, { "tag": "Sediment transport", "type": 1 } ], "collections": [ "ZQFRKKRT" ], "relations": {}, "dateAdded": "2011-01-11T19:52:53Z", "dateModified": "2012-11-07T16:18:03Z" } }, { "key": "VPRN8A9M", "version": 1, "library": { "type": "group", "id": 4428, "name": "Eau et GEOpatrimoine-IGD", "links": { "alternate": { "href": "https://www.zotero.org/groups/eau_et_geopatrimoine-igd", "type": "text/html" } } }, "links": { "self": { "href": "https://api.zotero.org/groups/4428/items/VPRN8A9M", "type": "application/json" }, "alternate": { "href": "https://www.zotero.org/groups/eau_et_geopatrimoine-igd/items/VPRN8A9M", "type": "text/html" } }, "meta": { "createdByUser": { "id": 40833, "username": "CedocIGUL", "name": "Centre de documentation (UNIL-IGD, CH)", "links": { "alternate": { "href": "https://www.zotero.org/cedocigul", "type": "text/html" } } }, "creatorSummary": "Ronco et al.", "parsedDate": "2010-02-15", "numChildren": 0 }, "data": { "key": "VPRN8A9M", "version": 1, "itemType": "journalArticle", "title": "Morphological effects of damming on lower Zambezi River", "creators": [ { "creatorType": "author", "firstName": "Paolo", "lastName": "Ronco" }, { "creatorType": "author", "firstName": "Giacomo", "lastName": "Fasolato" }, { "creatorType": "author", "firstName": "Michael", "lastName": "Nones" }, { "creatorType": "author", "firstName": "Giampaolo", "lastName": "Di Silvio" } ], "abstractNote": "The Zambezi River is the fourth largest river in Africa (after the Congo, Nile, and Niger), and it is the largest African river flowing into the Indian Ocean. The lower Zambezi in Mozambique is influenced by the presence of two very large reservoirs (Kariba dam and Cahora Bassa dam) that have modified the natural seasonal flows, as well as the sediment balance and morphology of the river. In particular, downstream of the Cahora Bassa reservoir down to the delta, no negligible effects are reported to take place, such as local scour, bank collapse, and shoreline progressive erosion (Davies et al., 2000; Beilfuss and Dos Santos, 2001). In order to quantify and possibly mitigate these effects, a simplified numerical model of the sediment transport and erosion/sedimentation phenomena along the lower Zambezi has been developed, capable to deal with the scanty and uncertain data available. Indeed, besides the systematic flow records at the dam sites and few occasional measurements of turbidity and bottom granulometry, only the Digital Elevation Model (DEM) of the river will be used for the model. The objective of this paper is to predict the present and future effects of the presence of the Kariba and Cahora Bassa dams on the downstream morphology, integrating the few coarse and nonsimultaneous data, somehow improving their overall quality. The model reproduces the time and space propagation of the disturbances, that confirm, with more generality, the qualitative response of the river to the constructions of dams, anticipated by various geomorphologists. In fact, the reduction of waterflow seems to have an immediate effect downstream by initially fostering the sediment deposition. Subsequently, the total interception of sediment by the dam slowly takes over and inverts this tendency. A slightly smaller aggradation (or slightly larger degradation) rate with respect to the natural conditions (no dams) seems to represent the dominant effect of damming in the long term evolution of the lower Zambezi.", "publicationTitle": "Geomorphology", "publisher": "", "place": "", "date": "Février 15, 2010", "volume": "115", "issue": "1-2", "section": "", "partNumber": "", "partTitle": "", "pages": "43-55", "series": "", "seriesTitle": "", "seriesText": "", "journalAbbreviation": "", "DOI": "10.1016/j.geomorph.2009.09.029", "citationKey": "", "url": "http://www.sciencedirect.com/science/article/B6V93-4XBX6Y8-3/2/290a65aff115ffc95324539528b810a1", "accessDate": "2010-01-14T16:12:12Z", "PMID": "", "PMCID": "", "ISSN": "0169-555X", "archive": "", "archiveLocation": "", "shortTitle": "", "language": "", "libraryCatalog": "ScienceDirect", "callNumber": "", "rights": "", "extra": "", "tags": [ { "tag": "Dams", "type": 1 }, { "tag": "Long-term morphodynamics", "type": 1 }, { "tag": "One-dimensional model", "type": 1 }, { "tag": "Reservoir", "type": 1 }, { "tag": "Sediment transport", "type": 1 }, { "tag": "Zambezi", "type": 1 } ], "collections": [ "ZQFRKKRT" ], "relations": {}, "dateAdded": "2010-01-14T16:12:12Z", "dateModified": "2012-11-07T16:18:03Z" } }, { "key": "XZGGVC5R", "version": 1, "library": { "type": "group", "id": 4428, "name": "Eau et GEOpatrimoine-IGD", "links": { "alternate": { "href": "https://www.zotero.org/groups/eau_et_geopatrimoine-igd", "type": "text/html" } } }, "links": { "self": { "href": "https://api.zotero.org/groups/4428/items/XZGGVC5R", "type": "application/json" }, "alternate": { "href": "https://www.zotero.org/groups/eau_et_geopatrimoine-igd/items/XZGGVC5R", "type": "text/html" } }, "meta": { "createdByUser": { "id": 40833, "username": "CedocIGUL", "name": "Centre de documentation (UNIL-IGD, CH)", "links": { "alternate": { "href": "https://www.zotero.org/cedocigul", "type": "text/html" } } }, "creatorSummary": "Vadnais et al.", "parsedDate": "2012-11-15", "numChildren": 0 }, "data": { "key": "XZGGVC5R", "version": 1, "itemType": "journalArticle", "title": "Analysis of the effects of human activities on the hydromorphological evolution channel of the Saint-Maurice River downstream from La Gabelle dam (Quebec, Canada)", "creators": [ { "creatorType": "author", "firstName": "Marie-Ève", "lastName": "Vadnais" }, { "creatorType": "author", "firstName": "Ali A.", "lastName": "Assani" }, { "creatorType": "author", "firstName": "Raphaëlle", "lastName": "Landry" }, { "creatorType": "author", "firstName": "Denis", "lastName": "Leroux" }, { "creatorType": "author", "firstName": "Denis", "lastName": "Gratton" } ], "abstractNote": "During the first half of the twentieth century, many hydroelectric facilities were built in the Saint-Maurice River watershed, followed by other human activities in the second half of the century (pleasure boating, boom dismantling, urbanization, etc.). The goal of the study is to constrain the effects of these various types of human activities, particularly those of the many dams in the watershed, on the hydromorphological evolution of the Saint-Maurice River downstream from the La Gabelle (dam) power plant (43,000 km2). Comparison of specific discharge in this river with streamflow measured in a natural river setting reveals a significant decrease in seasonal maximum flows, aside from winter, when daily maximum flows increased significantly. Also, unlike natural rivers, the long-term trend in spring flows is not characterized by a significant change in mean downstream from the La Gabelle plant. These hydrological changes are linked to the inversion-type management mode of the reservoirs built downstream from the plant. As for the morphological evolution, the longitudinal variability of bankfull width downstream from the plant shows two significant shifts in mean: the first, which was quasi-abrupt, took place downstream of the des Forges rapid; and the second, which was gradual, occurred upstream from the confluence of the Saint-Maurice River with the St. Lawrence River, above the point where the Saint-Maurice splits into two branches. Comparison of aerial photographs taken at various times (1948, 1964, 1975, 1996, and 2008) reveals no significant change in the mean of bankfull width over time. However, a significant increase in the surface area of islets located at the confluence was observed, which is caused by sediment accumulation. These sediments were likely derived from local bank erosion resulting from anthropogenic changes.", "publicationTitle": "Geomorphology", "publisher": "", "place": "", "date": "novembre 15, 2012", "volume": "175–176", "issue": "", "section": "", "partNumber": "", "partTitle": "", "pages": "199-208", "series": "", "seriesTitle": "", "seriesText": "", "journalAbbreviation": "Geomorphology", "DOI": "10.1016/j.geomorph.2012.07.010", "citationKey": "", "url": "http://www.sciencedirect.com/science/article/pii/S0169555X1200342X", "accessDate": "2012-11-07T15:35:13Z", "PMID": "", "PMCID": "", "ISSN": "0169-555X", "archive": "", "archiveLocation": "", "shortTitle": "", "language": "", "libraryCatalog": "ScienceDirect", "callNumber": "", "rights": "", "extra": "", "tags": [ { "tag": "Bankfull width", "type": 1 }, { "tag": "Dams", "type": 1 }, { "tag": "Islets", "type": 1 }, { "tag": "Saint-Maurice River", "type": 1 }, { "tag": "Seasonal flows", "type": 1 }, { "tag": "Statistical analysis", "type": 1 } ], "collections": [ "ZQFRKKRT" ], "relations": {}, "dateAdded": "2012-11-07T15:35:13Z", "dateModified": "2012-11-07T15:35:13Z" } } ]