Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.12544/2915
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Bontemps, Noélie
Lacroix, Pascal
Larose, Eric
Jara, Jorge
Taipe Maquehua, Edu Luis
Colca
Maca
Arequipa
Perú
2020-10-15T03:09:48Z
2020-10-15T03:09:48Z
2020-02-07
Bontemps, N.; Lacroix, P.; Larose, E.; Jara, J. & Taipe, E. (2020). Rain and small earthquakes maintain a slow-moving landslide in a persistent critical state. Nature Communications, 11, 780. https://doi.org/10.1038/s41467-020-14445-3
2041-1723
https://hdl.handle.net/20.500.12544/2915
In tectonically active mountain belts, landslides contribute significantly to erosion. Statistical analysis of regional inventories of earthquake-triggered-landslides after large earthquakes (Mw > 5.5) reveal a complex interaction between seismic shaking, landslide material, and rainfall. However, the contributions of each component have never been quantified due to a lack of in-situ data for active landslides. We exploited a 3-year geodetic and seismic dataset for a slow-moving landslide in Peru affected by local earthquakes and seasonal rainfalls. Here we show that in combination, they cause greater landslide motion than either force alone. We also show the rigidity of the landslide’s bulk clearly decreasing during Ml ≥ 5 earthquakes. The recovery is affected by rainfall and small earthquakes (Ml < 3.6), which prevent the soil from healing, highlighting the importance of the timing between forcings. These new quantitative insights into the mechanics of landslides open new perspectives for the study of the mass balance of earthquakes.
application/pdf
eng
Springer Nature
Nature Communications, volumen 11, artículo número: 780, 2020.
info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by/4.0/
Instituto Geológico, Minero y Metalúrgico – INGEMMET
Repositorio Institucional INGEMMET
Deslizamientos
Evotranspiración
Movimientos en masa
Precipitaciones
Sismicidad
Rain and small earthquakes maintain a slow-moving landslide in a persistent critical state
info:eu-repo/semantics/article
Geología
Alemania
10.1038/s41467-020-14445-3
Nature Communications
https://doi.org/10.1038/s41467-020-14445-3
Peer reviewed

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