Relocation of the 2006 Pingtung Earthquake sequence and seismotectonics in Southern Taiwan

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题名:	Relocation of the 2006 Pingtung Earthquake sequence and seismotectonics in Southern Taiwan
作者:	Wu,YM;Zhao,L;Chang,CH;Hsiao,NC;Chen,YG;Hsu,SK
贡献者:	地球物理研究所
关键词:	ARC-CONTINENT COLLISION;VELOCITY STRUCTURE;3-DIMENSIONAL P;BENEATH TAIWAN;CALIFORNIA;SUBDUCTION;ALGORITHM;OROGENY;REGION;SEA
日期:	2009
上传时间:	2010-06-29 18:40:45 (UTC+8)
出版者:	中央大學
摘要:	We combine the arrival time data from eleven ocean bottom seismometers (OBS) and from permanent stations of the Central Weather Bureau Seismic Network (CWBSN) and the Taiwan Strong Motion Instrumentation Program (TSMIP) to improve the three-dimensional Vp and Vp/Vs structures in the Taiwan region, relocate hypocenters of earthquakes in southern Taiwan including the 2006 Pingtung Earthquake sequence, and determine the focal mechanisms of some of the larger events. Our tomography result suggests that in the region south of Taiwan the Eurasian continental lithosphere is being subducted beneath the oceanic Philippine Sea plate, leading to a region of low P-wave speed with seismicity on top of a relatively high P-wave speed zone. The hypocentral distribution of the Pingtung Earthquake sequence indicates that the first event in the initial two largest shocks was a normal-faulting quake caused by the bending of the subducting lithosphere. The second event, perhaps triggered by the first one, was a strike-slip earthquake. Crown Copyright (C) 2008 Published by Elsevier B.V. All rights reserved.
關聯:	TECTONOPHYSICS
显示于类别:	[地球物理研究所] 期刊論文

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