Relationship between the Pre-existing Active Kunlun Fault and Co-seismic Surface Ruptures Produced by the 2001 Mw 7．8 Central Kunlun Earthquake，China

doi:10.11867/j.issn.1001-8166.2004.03.0368

地球科学进展 ›› 2004, Vol. 19 ›› Issue (3): 368 -372. doi: 10.11867/j.issn.1001-8166.2004.03.0368

LINAi-ming

Institute of Geosciences，Faculty of Science，Shizuoka University，836 Ohya，Shizuoka 422-8529，Japan

收稿日期:2004-04-09 出版日期:2004-12-20
通讯作者: LIN Ai-ming (1959-),professor,interest:Active tectonism and earthquake rupture dynamices and mechanics. E-mail:E-mail: Slin@ipc.shizuoka.ac.jp

Relationship between the Pre-existing Active Kunlun Fault and Co-seismic Surface Ruptures Produced by the 2001 Mw 7．8 Central Kunlun Earthquake，China

LINAi-ming

Institute of Geosciences，Faculty of Science，Shizuoka University，836 Ohya，Shizuoka 422-8529，Japan

Received:2004-04-09 Online:2004-12-20 Published:2004-06-01

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Field investigations allow to constrain the co-seismic surface rupture zone of ～400km with a strike-slip up to 16．3 m associated with the 2001Mw 7．8 Central Kunlun earthquake that occurred along the western segment of the Kunlun fault，northern Tibet．The co-seismic rupture structures are almost duplicated on the pre-existing fault traces of the Kunlun fault．The deformational characteristics of the co-seismic surface ruptures reveal that the earthquake had a nearly pure strike-slip mechanism．Theg eologic and topographice vidence clearly shows that spatial distributions of the co-seismic surface ruptures are re-stricted by the pre-existing geological structures of the Kunlun fault．

关键词: Earthquake, Co-seiemic surface rupture, Active fault, Pre-existing fault, Seismogenic fault zone

Key words: Earthquake, Co-seiemic surface rupture, Active fault, Pre-existing fault, Seismogenic fault zone

中图分类号:

P315

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