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2005•Chinese Journal of GeophysicsRequires access

Rupture process of Jiashi,Xinjiang earthquake(M_S 6.5)of Feb. 24, 2003

Wei Wang

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Abstract

The rupture process of Jiashi, Xinjiang earthquake of Feb. 24, 2003 was estimated by the finite fault model using far field broadband P wave records of CDSN and IRIS. The results indicate that the earthquake focus a north-dipped thrust fault with left-lateral strike slip. The fault plane has a strike of 300° and a dip of 28°. The focal depth is 7.5km.The focal mechanism of this earthquake is different from that of the earthquakes occurred in 1997 and 1998, but similar to that of Artux, Xinjiang earthquake of 1996.We proposed that this earthquake was caused by thrust fault due to the northward pushing of Tarim basin and orogeny of Tianshan Mountain.

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What this paper is about

The rupture process of Jiashi, Xinjiang earthquake of Feb. 24, 2003 was estimated by the finite fault model using far field broadband P wave records of CDSN and IRIS. The results indicate that the earthquake focus a north-dipped thrust fault with left-lateral strike slip. The fault plane has a strike of 300° and a dip of 28°. The focal depth is 7.5km.The focal mechanism of this earthquake is different from that of the earthquakes occurred in 1997 and 1998, but similar to that of Artux, Xinjiang earthquake of 1996.We proposed that this earthquake was caused by thrust fault due to the northward pushing of Tarim basin and orogeny of Tianshan Mountain.

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Available abstract

The rupture process of Jiashi, Xinjiang earthquake of Feb. 24, 2003 was estimated by the finite fault model using far field broadband P wave records of CDSN and IRIS. The results indicate that the earthquake focus a north-dipped thrust fault with left-lateral strike slip. The fault plane has a strike of 300° and a dip of 28°. The focal depth is 7.5km.The focal mechanism of this earthquake is different from that of the earthquakes occurred in 1997 and 1998, but similar to that of Artux, Xinjiang earthquake of 1996.We proposed that this earthquake was caused by thrust fault due to the northward pushing of Tarim basin and orogeny of Tianshan Mountain.

Key concepts: Seismology, Geology, Focal mechanism, Foreshock, Thrust fault, Fault plane, Thrust, Fault (geology)

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Rupture process of Jiashi,Xinjiang earthquake(M_S 6.5)of Feb. 24, 2003 — Research Paper | ScholarLens