Articles | Volume 9, issue 6
Earth Surf. Dynam., 9, 1481–1503, 2021
Earth Surf. Dynam., 9, 1481–1503, 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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Cited articles

Abellán, A., Jaboyedoff, M., Oppikofer, T., and Vilaplana, J. M.: Detection of millimetric deformation using a terrestrial laser scanner: experiment and application to a rockfall event, Nat. Hazards Earth Syst. Sci., 9, 365–372,, 2009. 
Albrecher, H., Bladt, M., Kortschak, D., Prettenthaler, F., and Swierczynski, T.: Flood occurrence change-point analysis in the paleoflood record from Lake Mondsee (NE Alps), Global Planet. Change, 178, 65–76,, 2019. 
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Beyer, A., Chakraborty, B., and Schenke, H. W.: Seafloor classification of the mound and channel provinces of the Porcupine Seabight: an application of the multibeam angular backscatter data, Int. J. Earth Sci., 96, 11–20,, 2007. 
Blaauw, M. and Christen, J. A.: Flexible paleoclimate age-depth models using an autoregressive gamma process, Bayesian Anal., 6, 457–474,, 2011. 
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.