Natural Hazards and Earth System Sciences
Natural Hazards and Earth System Sciences
NHESS
Articles | Volume 25, issue 12
Articles | Volume 25, issue 12
https://doi.org/10.5194/nhess-25-4843-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Special issue:
https://doi.org/10.5194/nhess-25-4843-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 25, issue 12
Research article
 | 
05 Dec 2025
Research article |  | 05 Dec 2025

Controls over debris flow initiation in glacio-volcanic environments in the Southern Andes

Ivo Fustos-Toribio, Daniel Basualto, Ardy Gatica, Alvaro Bravo-Alarcón, José-Luis Palma, Gabriel Fuentealba, and Sergio A. Sepúlveda

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Short summary
We investigated how volcanic soils and heavy rainfall trigger dangerous debris flows in the southern Andes. Our findings show saturated volcanic-soils above less permeable glacial deposits create ideal conditions for slope failures. Monitoring soil moisture and surface changes helps predict these events. This knowledge aids in protecting communities from debris flow hazards, increasingly important under climate change.
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