Subrecent sediment dynamics and sediment budget of the braided sandur system at Sandane, Erdalen (Nordfjord, Western Norway)

Autor:	Valentin Burki, Achim A. Beylich, Louise Hansen, Dorothea Gintz, Katja Laute, Geir Vatne, Ivar Berthling, Ola Fredin, Susan Liermann
Rok vydání:	2009
Předmět:	Hydrology geography geography.geographical_feature_category Flood myth Geography Planning and Development Geochemistry Ice field Sediment Outwash plain Erosion General Earth and Planetary Sciences Sediment balance Little ice age Sedimentary budget Geology
Zdroj:	Norsk Geografisk Tidsskrift - Norwegian Journal of Geography. 63:123-131
ISSN:	1502-5292 0029-1951
Popis:	A study was carried out of the subrecent sediment budget of a braided sandur system in a U-shaped valley linked to the Jostedalsbreen ice field in Nordfjord, in Western Norway. Special focus was on (i) the detection of different zones with negative, positive or balanced subrecent (following the Little Ice Age advance) sediment budget within the braided sandur system, (ii) the identification of sediment sources upstream of Sandane and from the slope systems to both sides of the braided sandur system, and (iii) the analysis of the subrecent sediment budget of the entire Sandane system. A combination of methods was applied in the analysis. The upstream part of Sandane was found to be characterised by a negative subrecent sediment balance, with erosion of coarse sediments from the Little Ice Age advance. In comparison, the downstream parts of Sandane have a balanced to slightly positive subrecent sediment budget, with formation of younger flood sediments and more stable channels. Thus, the subrecent sediment ...
Databáze:	OpenAIRE
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