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Linking landslide dynamics with sediment transfer in the Swiss Alps : Case study on landslide-driven sediment dynamics in the Rhône Valley

Bayens, Mathilde
(2021)

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Bayens_48541600_2021.pdf
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Details

Supervisors
Vanacker, Veerle ; Clapuyt, François
Faculty
Faculté des sciences
Degree label
Master [120] en sciences géographiques, orientation générale, à finalité approfondie
Abstract
Over time, the surface topography of mountainous regions evolves in response to interactions and feedbacks between climate, erosion and tectonic processes. Landslides are a main driver of landscape evolution and a dominant source of sediments. However, the role of landsliding in sediment mobilization and denudation remains poorly understood and quantified. In this study, we produced a landslide inventory to analyze this magnitude frequency distribution and derive landslide mobilization rates. Then, we analyzed the potential spatial links between these landslide mobilization rates, a sediment connectivity index (Cavalli et al. 2013) and catchment-averaged denudation rates. The Mins and Nider catchments, located in the upper Rhone Valley of the Swiss Alps, were selected for this study given the availability of long-term denudation rates, calculated by Norton et al. (2010).