2008年新疆于田7.3级地震对周围断层的影响及其正断层机制的区域构造解释

doi:10.3969/j.issn.0001-5733.2010.02.006

CORC > 北京大学 > 地球与空间科学学院

	2008年新疆于田7.3级地震对周围断层的影响及其正断层机制的区域构造解释; The mechanical effects of the 2008 M(s)7.3 Yutian, Xinjiang earthquake on the neighboring faults and its tectonic origin of normal faulting mechanism
	万永革 ; 沈正康 ; 盛书中 ; 徐晓枫
刊名	地球物理学报
	2010
关键词	于田地震断层相互作用震源机制动力学解释 Yutian earthquake Fault interaction Focal mechanism Tectonic origin
DOI	10.3969/j.issn.0001-5733.2010.02.006
英文摘要	计算了2008年3月21日新疆于田M_s7.3地震导致周围断层的库仑破裂应力变化.结果表明,库仑应力在贡嘎错断裂的西南段和东北段、康西瓦断裂东段和西段、普鲁断裂西段、龙木错—邦达错西段、阿尔金断裂和西昆仑山前逆冲断裂增加分别达6.9×10~4Pa、4.4×10~3Pa、8.0×10~5Pa、2.8×10~3Pa、2.3×10~4 Pa、5.7×10~3 Pa、1.6×10~3Pa和1.1×10~3Pa,而使得贡嘎错断裂中段、康西瓦断裂中段、龙木错-邦达错东段、普鲁断裂中段和喀喇昆仑北段断层上的库伦破裂应力减小分别达3.9×10~5Pa、5.8×10~5Pa、1.5×10~4Pa、1.5×10~...; We calculate the Coulomb failure stress changes caused by the 21 March 2008 M(s)7.3 Yutian, Xinjiang earthquake on its neighboring faults. The result shows that the Coulomb failure stresses increased along the southwest and northeast segments of the Gonggacuo fault, the east and west segment of the Kengxiwar faults, the west segment of the Pulu fault, the west segment of the Lungmu Co-Bangdag Co, the Altyn Tagh fault and the western Kunlun thrust fault by 6.9 X 10(4) Pa, 4.4 X 10(3) Pa, 8.0 X 10(5) Pa, 2.8 X 10(3) Pa, 2.3 X 10(4) Pa, 5.7 X 10(3) Pa, 1.6 X 10(3) Pa and 1.1 X 10(3) Pa, respectively, decreased along the central segment of the Gonggacuo and Kengxiwar faults, the east segment of the Lungmu Co-Bangdag Co fault, the central segment of the Pulu fault, and th e north segment of the Karakorum fault by 3.9 X 10(5) Pa, 5.8 X 105 Pa, 1.5 X 10(4) Pa, 1.5 X 10(4) Pa and 1.1 X 10(3) Pa, respectively. We estimated that the characteristic earthquake delayed 1 similar to 127 years in the central segment and advanced 2 similar to 138 years by the Yutian earthquake according to the slip rate on this fault. The Coulomb failure stress change caused by the 8 October 2005 Pakistan earthquake and projected on the fault plane and slip direction of the Yutian earthquake is 10 similar to 20 Pa, and is in favor of its occurrence. The Yutian earthquake has a normal faulting mechanism. Its origin is interpreted as the result of NNE intrusion of the India plate into Eurasia plate, causing with respect to the Tarim Block, the Qaidam Block in the northern part of Qinghai-Tibet Plateau move to the east along the Altyn Tagh Fault, and the Hindukushi Block move to the northwest along Karakorum Fault, respectively. The Yutian earthquake occurred between the Qaidam and Hindukushi Blocks, its east-west extension deformation pattern is resulted from the kinematic relative motion of the two blocks.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000275093200006&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; SCI(E); 中文核心期刊要目总览(PKU); 中国科技核心期刊(ISTIC); 中国科学引文数据库(CSCD); 15; 02; 280-289; 53
语种	中文
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/396291]
专题	地球与空间科学学院
推荐引用方式 GB/T 7714	万永革,沈正康,盛书中,等. 2008年新疆于田7.3级地震对周围断层的影响及其正断层机制的区域构造解释, The mechanical effects of the 2008 M(s)7.3 Yutian, Xinjiang earthquake on the neighboring faults and its tectonic origin of normal faulting mechanism[J]. 地球物理学报,2010.
APA	万永革,沈正康,盛书中,&徐晓枫.(2010).2008年新疆于田7.3级地震对周围断层的影响及其正断层机制的区域构造解释.地球物理学报.
MLA	万永革,et al."2008年新疆于田7.3级地震对周围断层的影响及其正断层机制的区域构造解释".地球物理学报 (2010).