Articles | Volume 26, issue 4
https://doi.org/10.5194/nhess-26-1883-2026
https://doi.org/10.5194/nhess-26-1883-2026
Brief communication
 | 
24 Apr 2026
Brief communication |  | 24 Apr 2026

Brief communication: In-situ measurements of basal sliding in natural debris flows

Georg Nagl, Maximilian Ender, Felix Klein, Brian McArdell, Stefan Boss, Jordan Aaron, Friedrich Zott, Johannes Hübl, and Roland Kaitna

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Supplementary material: Brief Communication: In-Situ Measurements of Basal Sliding in Natural Debris Flows Georg Nagl and Maximilian Ender https://doi.org/10.5281/zenodo.17249343

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Short summary
Debris flows are fast-moving mixtures of rocks, sediment, and water that threaten mountain communities. Their speed is controlled partly by sliding at the flow base, but this has never been directly measured in nature. We built a novel sensor setup in Tyrol, Austria, to close this gap. Two events showed signs of partial occurrence of base sliding, strongest at the flow front. Future work will study more events and refine the approach to improve hazard prediction.
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