Quantifying landslide frequency and sediment residence time in the Nepal Himalaya

Show full item record



Permalink

http://hdl.handle.net/10138/302834

Citation

Whipp , D M & Ehlers , T 2019 , ' Quantifying landslide frequency and sediment residence time in the Nepal Himalaya ' , Science Advances , vol. 5 , no. 4 , 3482 . https://doi.org/10.1126/sciadv.aav3482

Title: Quantifying landslide frequency and sediment residence time in the Nepal Himalaya
Author: Whipp, David Michael; Ehlers, Todd
Other contributor: University of Helsinki, Department of Geosciences and Geography

Date: 2019-04
Language: eng
Number of pages: 7
Belongs to series: Science Advances
ISSN: 2375-2548
DOI: https://doi.org/10.1126/sciadv.aav3482
URI: http://hdl.handle.net/10138/302834
Abstract: Quantifying how Earth surface processes interact with climate, tectonics, and biota has proven challenging, in part due to the stochastic nature of erosion and sedimentation. Landsliding is a common stochastic erosional process that may account for >50% of the sediment produced in steep mountainous landscapes. Here, we calculate the effects of landsliding and the residence time of sediment in a steep drainage basin in the Nepal Himalaya using a numerical model of landslide erosion combined with published cooling age distributions from two river sediment samples collected several years apart. We find that the difference in the two samples can be explained by landsliding and that the age distributions suggest that the residence time of sediment in the catchment is no greater than 50 years. This sensitivity to landsliding thus offers potential to improve our understanding of stochastic erosional processes, and further suggests that sediment is rapidly evacuated from steep mountainous drainage basins.
Subject: 1171 Geosciences
CATCHMENT EROSION
GRAIN-SIZE
Rights:


Files in this item

Total number of downloads: Loading...

Files Size Format View
eaav3482.full.pdf 2.097Mb PDF View/Open

This item appears in the following Collection(s)

Show full item record