Articles | Volume 20, issue 8
https://doi.org/10.5194/nhess-20-2319-2020
https://doi.org/10.5194/nhess-20-2319-2020
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

Related authors

Glacier geometry limits the propagation of thinning in Patagonian Icefields
Bastian Morales, Marcelo Somos-Valenzuela, Mario Lillo, Iñigo Irarrazaval, David Farias, Elizabet Lizama, Diego Rivera, and Alfonso Fernández
EGUsphere, https://doi.org/10.5194/egusphere-2024-1053,https://doi.org/10.5194/egusphere-2024-1053, 2024
Preprint archived
Short summary
Brief communication: An ice-debris avalanche in the Nupchu Valley, Kanchenjunga Conservation Area, eastern Nepal
Alton C. Byers, Marcelo Somos-Valenzuela, Dan H. Shugar, Daniel McGrath, Mohan B. Chand, and Ram Avtar
The Cryosphere, 18, 711–717, https://doi.org/10.5194/tc-18-711-2024,https://doi.org/10.5194/tc-18-711-2024, 2024
Short summary
Debris flow event on Osorno volcano, Chile, during summer 2017: new interpretations for chain processes in the southern Andes
Ivo Janos Fustos-Toribio, Bastian Morales-Vargas, Marcelo Somos-Valenzuela, Pablo Moreno-Yaeger, Ramiro Muñoz-Ramirez, Ines Rodriguez Araneda, and Ningsheng Chen
Nat. Hazards Earth Syst. Sci., 21, 3015–3029, https://doi.org/10.5194/nhess-21-3015-2021,https://doi.org/10.5194/nhess-21-3015-2021, 2021
Short summary
Response time to flood events using a social vulnerability index (ReTSVI)
Alvaro Hofflinger, Marcelo A. Somos-Valenzuela, and Arturo Vallejos-Romero
Nat. Hazards Earth Syst. Sci., 19, 251–267, https://doi.org/10.5194/nhess-19-251-2019,https://doi.org/10.5194/nhess-19-251-2019, 2019
Short summary

Related subject area

Landslides and Debris Flows Hazards
Landslide activation during deglaciation in a fjord-dominated landscape: observations from southern Alaska (1984–2022)
Jane Walden, Mylène Jacquemart, Bretwood Higman, Romain Hugonnet, Andrea Manconi, and Daniel Farinotti
Nat. Hazards Earth Syst. Sci., 25, 2045–2073, https://doi.org/10.5194/nhess-25-2045-2025,https://doi.org/10.5194/nhess-25-2045-2025, 2025
Short summary
Brief communication: Weak correlation between building damage and loss of life from landslides
Maximillian Van Wyk de Vries, Alexandre Dunant, Amy L. Johnson, Erin L. Harvey, Sihan Li, Katherine Arrell, Jeevan Baniya, Dipak Basnet, Gopi K. Basyal, Nyima Dorjee Bhotia, Simon J. Dadson, Alexander L. Densmore, Tek Bahadur Dong, Mark E. Kincey, Katie Oven, Anuradha Puri, and Nick J. Rosser
Nat. Hazards Earth Syst. Sci., 25, 1937–1942, https://doi.org/10.5194/nhess-25-1937-2025,https://doi.org/10.5194/nhess-25-1937-2025, 2025
Short summary
Comparative analysis of μ(I) and Voellmy-type grain flow rheologies in geophysical mass flows: insights from theoretical and real case studies
Yu Zhuang, Brian W. McArdell, and Perry Bartelt
Nat. Hazards Earth Syst. Sci., 25, 1901–1912, https://doi.org/10.5194/nhess-25-1901-2025,https://doi.org/10.5194/nhess-25-1901-2025, 2025
Short summary
Exploring implications of input parameter uncertainties in glacial lake outburst flood (GLOF) modelling results using the modelling code r.avaflow
Sonam Rinzin, Stuart Dunning, Rachel Joanne Carr, Ashim Sattar, and Martin Mergili
Nat. Hazards Earth Syst. Sci., 25, 1841–1864, https://doi.org/10.5194/nhess-25-1841-2025,https://doi.org/10.5194/nhess-25-1841-2025, 2025
Short summary
From rockfall source area identification to susceptibility zonation: a proposed workflow tested on El Hierro (Canary Islands, Spain)
Roberto Sarro, Mauro Rossi, Paola Reichenbach, and Rosa María Mateos
Nat. Hazards Earth Syst. Sci., 25, 1459–1479, https://doi.org/10.5194/nhess-25-1459-2025,https://doi.org/10.5194/nhess-25-1459-2025, 2025
Short summary

Cited articles

Aguilera, F., Honores, C., Lemus, M., Neira, H., Pérez, Y., and Rojas, J.: Evaluación de los recursos geotérmicos de la Región de Los Lagos, Informe Registrado, Servicio Nacional de Geología y Minería, Santiago, Chile, 2014. 
Aldunce, P. and González, M.: Desastres asociados al clima en la agricultura y medio rural en Chile, Fundación para la Innovación Agraria, Ministerio de Agricultura Chile, Santiago, 2009. 
Alganci, U., Besol, B., and Sertel, E.: Accuracy assessment of different digital surface models, ISPRS Int. J. Geo-Inform., 7, 1–16, https://doi.org/10.3390/ijgi7030114, 2018. 
ASF DAAC: ALOS PALSAR_Radiometric_Terrain_Corrected_hi_res; Includes Material ©JAXA/METI 2011, https://doi.org/10.5067/Z97HFCNKR6VA, 2015. 
ASTM: D2487-17, Standard Practice for Classification of Soils for Engineering Purposes (Unified Soil Classification System), ASTM International, West Conshohocken, PA, 2017a. 
Download
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.
Share
Altmetrics
Final-revised paper
Preprint