2004年东乌珠穆沁旗地震震源参数研究

Abstract

Abstract: Using waveform inversion method, we studied the focal mechanism and depth of 2004-03-24 earthquake occurred in Inner Mongolia (Latitude, Longitude ). Local waveform has better constraints on focal mechanism, while teleseismic waveform has high resolution on source depth. Both methods were employed to invert source parameters. Focal mechanism was inverted by CAP method. The inverted depth was confirmed by teleseismic P wave modeling. The earthquake is determined as a thrust event with focal planes as 330-68-91 and 147-22-87, magnitude of M_W5.3 and focal depth: 12 2 km. So, the earthquake occurred in upper crust instead of 30 km at depth as reported by many other papers.

Key words: Waveform inversion, Focal mechanism, Focal depth, Earthquake

CLC Number:

P315.7

ZHANG Ai-ping, NI Si-dao, YANG Xiao-yong. Source parameters of 2004-03-24 Xilin Gol League earthquake[J]. EARTHQUAKE, 2008, 28(3): 61-68.

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Source parameters of 2004-03-24 Xilin Gol League earthquake

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