Climate and human forcing of Alpine river flow

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State: Public
Version: author
Serval ID
serval:BIB_939789402BCB
Type
Inproceedings: an article in a conference proceedings.
Collection
Publications
Title
Climate and human forcing of Alpine river flow
Title of the conference
River Flow 2014
Author(s)
Lane S.N., Bakker M., Balin D., Lovis B., Regamey B.
Publisher
Taylor & Francis Group, London
Address
Lausanne
ISBN
978-1-138-02674-2
Publication state
Published
Issued date
2014
Editor
Schleiss A.J., De Cesare G., Franca M.J., Pfister M.
Pages
7-15
Language
english
Abstract
River flow in Alpine environments is likely to be highly sensitive to climate change because of the effects of warming upon snow and ice, and hence the intra-annual distribution of river runoff. It is also likely to be influenced strongly by human impacts both upon hydrology (e.g. flow abstraction) and river regulation. This paper compares the river flow and sediment flux of two Alpine drainage basins over the last 5 to 7 decades, one that is largely unimpacted by human activities, one strongly impacted by flow abstraction for hydroelectricity. The analysis shows that both river flow and sediment transport capacity are strongly dependent upon the effects of temperature and precipitation availability upon snow accumulation. As the latter tends to increase annual maximum flows, and given the non-linear form of most sediment transport laws, current warming trends may lead to increased sedimentation in Alpine rivers. However, extension to a system impacted upon by flow abstraction reveals the dominant effect that human activity can have upon river sedimentation but also how human response to sediment management has co-evolved with climate forcing to make disentangling the two very difficult.
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23/04/2015 14:24
Last modification date
20/08/2019 15:56
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