Evidence for an earthquake barrier model from Mw∼7.8 Kokoxili (Tibet) earthquake slip-distribution
| Autor: | Rémi Michel, Geoffrey C. P. King, Yann Klinger |
|---|---|
| Rok vydání: | 2006 |
| Předmět: |
010504 meteorology & atmospheric sciences
High resolution Slip (materials science) 010502 geochemistry & geophysics Geodesy 01 natural sciences Directivity Geophysics Space and Planetary Science Geochemistry and Petrology Interplate earthquake Earth and Planetary Sciences (miscellaneous) Perpendicular Fault mechanics Earthquake rupture Optical correlation Geology Seismology 0105 earth and related environmental sciences |
| Zdroj: | Earth and Planetary Science Letters. 242:354-364 |
| ISSN: | 0012-821X |
| DOI: | 10.1016/j.epsl.2005.12.003 |
| Popis: | The slip distribution of the Mw ∼ 7.8 Kokoxili (Tibet, 2001) earthquake has been measured at high resolution using optical correlation of satellite images and provides both the parallel and perpendicular components of the horizontal co-seismic slip. This reveals a variation of the horizontal slip at a scale of ∼ 20 km along-strike. Anti-correlation of slip parallel and perpendicular to the fault indicates transfer of slip from the horizontal to the vertical component at the ends of segments. These features suggest a rupture model with segments separated by strong persistent geometric barriers. The unexpected ending of the rupture south of the main fault can be explain by such a structure but bears important implications for the initiation and rupture directivity of the next earthquake. |
| Databáze: | OpenAIRE |
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