Serey, A, Piñero-Feliciangeli, L, Sepúlveda, SA et al. (3 more authors) (2019) Landslides induced by the 2010 Chile megathrust earthquake: a comprehensive inventory and correlations with geological and seismic factors. Landslides, 16 (6). pp. 1153-1165. ISSN 1612-510X
Abstract
The 2010 Mw=8.8 Maule earthquake, which occurred in the subduction contact between the Nazca and the South American tectonic plates off the coast of Chile, represents an important opportunity to improve understanding of the distribution and controls for the generation of landslides triggered by large megathrust earthquakes in subduction zones. This paper provides the analysis of the comprehensive landslide inventory for the Maule earthquake between 32.5° S and 38.5° S°. In total 1226 landslides were mapped over a total area of c.120,500 km2 , dominantly disrupted slides. The total landslide volume is c. 10.6 Mm3. The events are unevenly distributed in the study area, the majority of landslides located in the Principal Andean Cordillera and a very constrained region near the coast on the Arauco Peninsula, forming landslide clusters. Statistical analysis of our database suggests that relief and lithology are the main geological factors controlling coseismic landslides, while the seismic factor with higher correlation with landslide occurrence is the ratio between peak horizontal and peak vertical ground accelerations. The results and comparison with other seismic events elsewhere suggest that the number of landslides generated by megathrust earthquakes is lower than events triggered by shallow crustal earthquakes by at least one or two orders of magnitude, which is very important to consider in future seismic landslide hazard analysis.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © Springer-Verlag GmbH Germany part of Springer Nature 2019. This is an author produced version of a paper published in Landslides. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | coseismic landslides, megathrust earthquake, Chile |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Environment (Leeds) > School of Earth and Environment (Leeds) > Institute for Applied Geosciences (IAG) (Leeds) |
Funding Information: | Funder Grant number NERC Not Known |
Depositing User: | Symplectic Publications |
Date Deposited: | 14 Feb 2019 12:08 |
Last Modified: | 14 Mar 2020 01:38 |
Status: | Published |
Publisher: | Springer Nature |
Identification Number: | 10.1007/s10346-019-01150-6 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:142500 |