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L'activité torrentielle dans un haut bassin versant alpin en cours de déglaciation durant le XXe siècle : le vallon de Celse-Nière (Massif des Écrins, France) / Torrential activity in an Alpine catchment undergoing glacier recession during the 20th century: the Celse-Nière catchment (Massif des Écrins, France)

Authors: Cossart, Étienne;

L'activité torrentielle dans un haut bassin versant alpin en cours de déglaciation durant le XXe siècle : le vallon de Celse-Nière (Massif des Écrins, France) / Torrential activity in an Alpine catchment undergoing glacier recession during the 20th century: the Celse-Nière catchment (Massif des Écrins, France)

Abstract

Résumé Dans les hauts bassins versants alpins, les changements climatiques survenus depuis la fin du Petit Âge de Glace engendrent la fusion des glaciers et exacerbent l'activité des torrents proglaciaires. Les modèles établis tendent à mettre en parallèle l'évolution de l'activité torrentielle avec le rythme de la fonte des glaciers. Or, à la suite du recul glaciaire, la mise en place des relais de processus fluvio-glaciaires nécessaires à l'exportation des sédiments depuis les hauts bassins versants vers leur exutoire peut nécessiter plusieurs décennies. Aussi le recul glaciaire maximal ne coïncide-t-il pas toujours avec la période d'exportation maximale des sédiments par les torrents proglaciaires. Ce décalage est dû aux phénomènes de barrage, exercés notamment par les édifices morainiques.

Keywords

Alps. ; paraglacial ; torrential activity ; damming ; Little Ice Age ; Massif des Écrins, paraglaciaire ; torrentialité ; effets de barrage ; Petit Âge de Glace ; Massif des Écrins ; Alpes.

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Powered by OpenAIRE graph
Found an issue? Give us feedback
selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
4
Average
Average
Average
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