Articles | Volume 9, issue 6
Earth Surf. Dynam., 9, 1481–1503, 2021
https://doi.org/10.5194/esurf-9-1481-2021
Earth Surf. Dynam., 9, 1481–1503, 2021
https://doi.org/10.5194/esurf-9-1481-2021
Research article
29 Nov 2021
Research article | 29 Nov 2021

A 4000-year debris flow record based on amphibious investigations of fan delta activity in Plansee (Austria, Eastern Alps)

Carolin Kiefer et al.

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Short summary
This study provides amphibious investigations of debris flow fans (DFFs). We characterize active DFFs, combining laser scan and sonar surveys at Plansee. We discover a 4000-year debris flow record in sediment cores, providing evidence for a 7-fold debris flow frequency increase in the 20th and 21st centuries, coincident with 2-fold enhanced rainstorm activity in the northern European Alps. Our results indicate climate change as being the main factor controlling debris flow activity.