Articles | Volume 20, issue 8
Research article
26 Aug 2020
Research article |  | 26 Aug 2020

The mudflow disaster at Villa Santa Lucía in Chilean Patagonia: understandings and insights derived from numerical simulation and postevent field surveys

Marcelo A. Somos-Valenzuela, Joaquín E. Oyarzún-Ulloa, Ivo J. Fustos-Toribio, Natalia Garrido-Urzua, and Ningsheng Chen

Data sets

ALOS PALSAR_Radiometric_Terrain_Corrected_hi_res ASF DAAC

Model code and software

R.avaflow model for the VSL event Oyarzún-Ulloa, Somos-Valenzuela, and Fustos-Toribio

Short summary
This work presents a study of the biggest mudflow event in 20 years in Chilean Patagonia, which resulted from an avalanche in the Cordon Yelcho. We integrate in situ geotechnical tests and numerical modeling to model the Villa Santa Lucía mudflow event. Our results suggest that the initial soil water content is sufficient to transform the landslide and scoured soil into a mudflow. Therefore, knowing the soil characteristics is crucial to evaluating the impact of landslides in the study area.
Final-revised paper