Articles | Volume 20, issue 1
Nat. Hazards Earth Syst. Sci., 20, 1–20, 2020
https://doi.org/10.5194/nhess-20-1-2020
Nat. Hazards Earth Syst. Sci., 20, 1–20, 2020
https://doi.org/10.5194/nhess-20-1-2020

Research article 02 Jan 2020

Research article | 02 Jan 2020

From examination of natural events to a proposal for risk mitigation of lahars by a cellular-automata methodology: a case study for Vascún valley, Ecuador

Valeria Lupiano et al.

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Short summary
A method for risk mitigation of secondary lahars, triggered by violent rainfall, is proposed as an alternative to methods for containment or deviation that could cause future disasters. It is based on controlled generation of small lahars as a result of collapse of frail dams by backfill, forming momentary ponds, as in natural cases. LLUNPIY verifies by simulation path, velocity, thickness, and erosion of lahars that could be produced; a complex case study for Vascún valley, Ecuador, is shown.
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