30-year record of Himalaya mass-wasting reveals landscape perturbations by extreme events

Joshua N. Jones (), Sarah J. Boulton, Martin Stokes, Georgina L. Bennett and Michael R. Z. Whitworth
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Joshua N. Jones: University of East Anglia, Norwich Research Park
Sarah J. Boulton: University of Plymouth, Drakes Circus
Martin Stokes: University of Plymouth, Drakes Circus
Georgina L. Bennett: University of Exeter, Amory Building
Michael R. Z. Whitworth: AECOM, East Wing Plumer House

Nature Communications, 2021, vol. 12, issue 1, 1-15

Abstract: Abstract In mountainous environments, quantifying the drivers of mass-wasting is fundamental for understanding landscape evolution and improving hazard management. Here, we quantify the magnitudes of mass-wasting caused by the Asia Summer Monsoon, extreme rainfall, and earthquakes in the Nepal Himalaya. Using a newly compiled 30-year mass-wasting inventory, we establish empirical relationships between monsoon-triggered mass-wasting and monsoon precipitation, before quantifying how other mass-wasting drivers perturb this relationship. We find that perturbations up to 5 times greater than that expected from the monsoon alone are caused by rainfall events with 5-to-30-year return periods and short-term (

Date: 2021
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DOI: 10.1038/s41467-021-26964-8

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