Quantifying lateral bedrock erosion caused during a hyperconcentrated flow in a narrow alpine limestone gorge

Here, we show results of an unprecedented LiDAR dataset quantitatively determining the lateral bedrock erosion a narrow limestone gorge during extreme hyperconcentrated flow. The comparison two point clouds prior and post to June 15 th flow event provide information about massive breakout particles abrasion channel walls. With multiscale model cloud analysis, can that from 0.0001 m 3 3.5 were eroded subvertical A total 20.9 was in observable part with 90 % being smaller than 0.15 . We delimited main processes event: shearing reach into predefined failure surfaces, along whole channel, detectable by if changes are > cm. This study provides quantitative evidence for rock alpine gorges could also control formation evolution over Holocene/Lateglacial time scales.