Earthquake statistics changed by typhoon-driven erosion - Université de Rennes Accéder directement au contenu
Article Dans Une Revue Scientific Reports Année : 2020

Earthquake statistics changed by typhoon-driven erosion

Résumé

Tectonics and climate-driven surface processes govern the evolution of Earth’s surface topography. Topographic change in turn influences lithospheric deformation, but the elementary scale at which this feedback can be effective is unclear. Here we show that it operates in a single weather-driven erosion event. In 2009, typhoon Morakot delivered ~ 3 m of precipitation in southern Taiwan, causing exceptional landsliding and erosion. This event was followed by a step increase in the shallow (< 15 km depth) earthquake frequency lasting at least 2.5 years. Also, the scaling of earthquake magnitude and frequency underwent a sudden increase in the area where mass wasting was most intense. These observations suggest that the progressive removal of landslide debris by rivers from southern Taiwan has acted to increase the crustal stress rate to the extent that earthquake activity was demonstrably affected. Our study offers the first evidence of the impact of a single weather-driven erosion event on tectonics.
Fichier principal
Vignette du fichier
steer-scirep-2020.pdf (2.54 Mo) Télécharger le fichier
Origine : Publication financée par une institution
Loading...

Dates et versions

insu-02891623 , version 1 (07-07-2020)

Licence

Paternité

Identifiants

Citer

Philippe Steer, Louise Jeandet, Nadaya Cubas, Odin Marc, Patrick Meunier, et al.. Earthquake statistics changed by typhoon-driven erosion. Scientific Reports, 2020, 10 (1), pp.10899. ⟨10.1038/s41598-020-67865-y⟩. ⟨insu-02891623⟩
158 Consultations
76 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More