Relationship between the Pre-existing Active Kunlun Fault and Co-seismic Surface Ruptures Produced by the 2001 Mw 7．8 Central Kunlun Earthquake，China
收稿日期: 2004-04-09
网络出版日期: 2004-06-01
Relationship between the Pre-existing Active Kunlun Fault and Co-seismic Surface Ruptures Produced by the 2001 Mw 7．8 Central Kunlun Earthquake，China
Received date: 2004-04-09
Online published: 2004-06-01
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．
LINAi-ming . Relationship between the Pre-existing Active Kunlun Fault and Co-seismic Surface Ruptures Produced by the 2001 Mw 7．8 Central Kunlun Earthquake，China[J]. 地球科学进展, 2004 , 19(3) : 368 -372 . DOI: 10.11867/j.issn.1001-8166.2004.03.0368
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．
[1]Lin A, Fu B,Guo J，et al. Co-seismic strike-slip and rupture length produced by the 2001 Ms 8.1 Central Kunlun earthquake [J]. Science, 2002, 296:2 015-2 017.
[2]Lin A, Masayuki M, Fu B. Rupture segmentation and process of the 2002 Mw 7.8 Central Kunlun earthquake, China [J]. Bulletin of Seismological Society of America, 2003, 93:2 477-2 492.
[3]Lin A, Guo J, Fu B. Co-seismic mole-track structures produced by the 2001 Ms 8.1 Central Kunlun earthquake, China [J]. Journal of Structural Geology,in press.
[4]Xu X, Chen W, Yu G，et al.Characteristic features of the surface ruptures of the Huh Sai Hu (Kunlunshan) earthquake (Ms 8.1), northern Tibetan Plateau,China[J]. Seismology and Geology, 2002, 24:1-13 (in Chinese with English abstract).
[5]Tapponnier P, Molnar P.Active faulting and tectonics in China[J].Journal of Geophysical Research，1977, 82:2 905-2 930.
[6]Van derWoerd J, Tapponnier P, Ryerson F J，et al. Uniform postglacial slip-rate along the central 600 km of the Kunlun Fault (Tibet), from Al26, Be10, and C14dating of riser offsets, and climatic origin of the regional morphology[J].Geophysical Journal International, 2002, 148:356-388.
[7]Zhao G.Quaternary faulting in North Qinghai-Tibet Plateau[J]. Earthquake Research in China, 1996, 12:107-119 (in Chinese).
[8]Kidd W S F, Molnar P. Quaternary and Active Faulting Observed on the 1985 Academia-Sinica Royal-Society Geotraverse of Tibet[M]. London：Phil Trans, 1988, 327:337-363.
[9]Lin A,Ouchi T, Chen A，et al. Co-seismic displacements, folding and shortening structures along the Chelungpu surface rupture zone occurred during the 1999 Chi-Chi (Taiwan) earthquake [J]. Tectonophysics, 2001, 330:225-244.
[10]DengQ, Wu D, Zhang P，et al.Structure and deformational character of strike-slip fault zones[J]. Pageoph, 1986, 124:203-223.
[11]Unruh J R, Lettis W R, Sowors J M.Kinematic interpretation of the 1992 Landers earthquake[J]. Bulletin of Seismological Society of America, 1994, 84:537-546.
[12]Lin A, Uda S.Morphological characteristics of the earthquake surface ruptures on Awaji Island, associated with the 1995 Southern Hyogo earthquake [J]. The Island Arc, 1996, 5:1-15.
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