Articles | Volume 11, issue 7
https://doi.org/10.5194/gmd-11-2841-2018
https://doi.org/10.5194/gmd-11-2841-2018
Development and technical paper
 | 
13 Jul 2018
Development and technical paper |  | 13 Jul 2018

EDDA 2.0: integrated simulation of debris flow initiation and dynamics considering two initiation mechanisms

Ping Shen, Limin Zhang, Hongxin Chen, and Ruilin Fan

Model code and software

Supplement of EDDA 2.0: integrated simulation of debris flow initiation and dynamics, considering two initiation mechanisms P. Shen, L. Zhang, H. Chen, and R. Fan https://doi.org/10.5281/zenodo.1033377

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Short summary
A rainstorm can trigger numerous debris flows. A difficult task in debris flow risk assessment is to identify debris flow initiation locations and volumes. This paper presents a new model to solve this problem by physically simulating the initiation of debris flows by hillslope bed erosion and transformation from slope failures. The sediment from these two initiation mechanisms joins the flow mixture, and the volume of the flow mixture increases along the flow path due to additional bed erosion.