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| Titel |
Spatial pattern of the co-seismic landslides triggered by the Mw7.9 Sichuan earthquake: Influence of the complex focal mechanism. |
| VerfasserIn |
Patrick Meunier, Alexandra Robert, Marcello de Michele, Robert N. Parker, Alexander L. Densmore |
| Konferenz |
EGU General Assembly 2013
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 15 (2013) |
| Datensatznummer |
250073614
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| Zusammenfassung |
| We have recently shown that density patterns of co-seismic landslides associated with large
thrust earthquakes can be used to map the area of maximum slip of the fault plane (Meunier
et al., 2013). In this study, we present the results of the inversion performed over the nearly
sixty thousand landslides triggered by the Sichuan earthquake (Mw=7.9, 2008, China). This
earthquake is particularly interesting because a) it is an order of magnitude larger than the
cases we have previously studied and b) its focal mechanism is not pure thrust but exhibits a
strong dextral component. Our source, inverted from the landslide data, clearly points at the
two zones of pure thrust on the fault, independently identified by geodetic data
(De Michelle et al., 2010). This result suggests that the co-seismic landslides were
preferentially induced by the waves generated by the thrust component of the fault slip. |
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