Accurate debris-flow modelling depends on the ability to simulate surging and pulsing behaviour. However, our understanding of these phenomena is starved observational constraints. Here we propose use seismic measurements, which resolve arrival coarse-grained roll wave fronts in debris flows at Illgraben, Switzerland. Roll waves likely play a key role flow pulses but are typically only observed...

Abstract. The 2017 Mw 7.1 Puebla–Morelos intraslab earthquake (depth: 57 km) severely hit Popocatépetl Volcano, located ? 70 km north of the epicenter. seismic shaking triggered shallow landslides on volcanic edifice, mobilizing slope material saturated by 3 d antecedent rainfall. We produced a landslide map based semi-automatic classification 50 cm resolution optical image acquired 2 months af...

Debris flows are common geological hazards in mountainous regions worldwide. Predicting the impact pressure of debris is major importance for hazard mitigation. Here, we experimentally investigate characteristics by varying concentrations grains and slurry. The measured signal decomposed into a stationary mean fluctuating through empirical mode decomposition. low frequency caused thrusting bulk...

Background: Strong earthquakes are among the prime triggering factors of landslides, which may block rivers, forming landslide dams. Some of these dams may pose serious threats to people and property due to upstream inundation and downstream dam-breach flooding. Evaluating the stability and potential hazard of landslide dams is significant for the mitigation measures, but remains challenging. T...