Debris flow erosion into bedrock helps to set the pace of mountain denudation, but there are few empirical observations this process. We studied effects debris flows on using Structure-From-Motion photogrammetry and multiple real-time monitoring measurements. found that distribution across channel cross-section could be generalized as an exponentially decreasing function height above thalweg. U...

As a consequence of their spontaneous occurrence, and frequent formation multiple surges with high sediment loads, debris flows are considered one the most hazardous gravity-driven mass movements in montane regions. Field measurements surface velocities an essential link chain understanding fundamental process dynamics applied protection against flows. In order to measure consecutive within sin...

We explore possible applications of the Lattice-Boltzmann Method for the simulation of geophysical flows. This fluid solver, while successful in other fields, is still rarely used for geotechnical applications. We show how the standard method can be modified to represent freesurface realization of mudflows, debris flows, and in general any plastic flow, through the implementation of a Bingham c...

This study examines the interactions among geomorphic and biogeographic processes that govern the invasion by two contrasting exotic plant species—a shrub, scotch broom (Cytisus scoparius) and an herb, foxglove (Digitalis purpurea), over several decades of road and stream networks in the H.J. Andrews Experimental Forest in western Oregon. Distributions of C. scoparius and D. purpurea were mappe...

Wildfires have a strong influence on various geotechnical and hydraulic properties of soils sediments, which may become more vulnerable to landslides or debris flows. In the present study, case investigation 2018 post-wildfire flows in Montecito, California, USA, was conducted, with focus wildfire-affected areas volume estimation. Significant were deposited around four major creeks, i.e., Monte...

Numerical modelling is a major challenge in the prevention of risks related to the occurrence of catastrophic phenomena. A Cellular Automata methodology was developed for modelling large scale (extended for kilometres) dangerous surface flows of different nature such as lava flows, pyroclastic flows, debris flows, rock avalanches, etc. This paper presents VALANCA, a first version of a Cellular ...

Over the past decade or more, contradictory evidence of Martian climate, indicating that surface temperatures seldom if ever approach the melting point of water at midlatitudes, and geomorphic features, consistent with liquid flows at these same latitudes, have proven difficult to reconcile. In this article, we demonstrate that several features of liquid-erosional flows can be produced by dry g...

Shock waves, dead zones and particle-free regions form when a thin surface avalanche of granular material flows around an obstacle or over a change in the bed topography. Understanding and modelling these flows is of considerable practical interest for industrial processes, as well as for the design of defences to protect buildings, structures and people from snow avalanches, debris flows and r...

Debris flows can be considered a type of landslide with large velocities and long run-out distances. There are many types debris flows, depending on the properties solid fluid components mixture. The triggering propagation studied using single 3D mathematical model. computational cost very high because their length, depth-integrated models provide good combination accuracy cost. Both combined i...

A partially saturated flow, which has an unsaturated layer in its upper part, been monitored the steep initiation zones of debris flows. Understanding and runout characteristics flows is essential for predicting timing magnitude downstream Monitoring performed using time-lapse cameras water pressure sensors Ohya landslide scar central Japan allowed us to obtain data on a series flow surges from...