运用SDM方法研究2001年昆仑山口西M_S8.1地震破裂分布:GPS和InSAR联合反演的结果

doi:10.6038/cjg20160616

CORC > 北京大学 > 地球与空间科学学院

	运用SDM方法研究2001年昆仑山口西M_S8.1地震破裂分布:GPS和InSAR联合反演的结果; Slip model of the 2001 Kunlun mountain M(s)8. 1 earthquake by SDM: joint inversion from GPS and InSAR data
	屠泓为 ; 汪荣江 ; 刁法启 ; 张勇 ; 万永革 ; 金明培
刊名	地球物理学报
	2016
关键词	昆仑山口西MS8.1地震破裂分布位错反演 West Kunlun mountain M(s)8. 1 earthquake Slip distribution Slip inversion STRONG GROUND MOTION POSTSEISMIC DEFORMATION DISPLACEMENT FIELD DISLOCATION THEORY IZMIT EARTHQUAKE TIBETAN PLATEAU HALF-SPACE FAULT RECORDS
DOI	10.6038/cjg20160616
英文摘要	2001年11月14日昆仑山口西MS8.1地震是有现代仪器记录以来发生在青藏高原区域最大地震之一,对研究青藏高原的运动学模式具有重要意义.从地震发生至今,不同研究者运用不同资料和方法获取的地震破裂分布还存在一定差异.基于此,本文采用GPS和InSAR资料数据,参考最新研究成果,构建更为合理的断层几何模型,运用SDM方法反演本次地震的破裂分布.在反演中充分考虑不同数据权重的影响及InSAR数据中存在的整体偏移.结果显示本次地震断层性质以左旋走滑为主,最大破裂位错为~6.9m,分布在35.76°N、93.40°E附近,地震较大破裂区域主要分布在地下20km以内.同时,反演的位错分布在断层浅部与地质...; For the 2001 M(s)8. 1 Kunlun earthquake, which was one of the largest events occurred around the Tibet plateau, a large controversy still exists about its rupture detail. In this paper, we invert the co-seismic GPS and InSAR data for a robust finite-fault model of the Kunlun earthquake based on a realistic fault geometry buried in a layered earth structure. The inversion is based on the constrained least-squares principle and realized using the steepest decent method (SDM). The different data sets are weighted according to their variance and spatial coverage. The results show that the slip maximum can reach up to similar to 6. 9 m and is located at 35. 76 degrees N and 93. 40 degrees E. The main rupture area is located at the shallow depth above 20 km. The inverted shallow slip agrees with the surface rupture observed by the field survey, and the whole slip pattern appears generally consistent with the results obtained from previous geological and seismic wave studies.; 中国地震局星火计划,人社部择优计划项目,地震行业专项,国家留学基金; SCI(E); EI; 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); tuhongwei@sina.com; wang@gfz-potsdam.de; 06; 2103-2112; 59
语种	中文
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/453207]
专题	地球与空间科学学院
推荐引用方式 GB/T 7714	屠泓为,汪荣江,刁法启,等. 运用SDM方法研究2001年昆仑山口西M_S8.1地震破裂分布:GPS和InSAR联合反演的结果, Slip model of the 2001 Kunlun mountain M(s)8. 1 earthquake by SDM: joint inversion from GPS and InSAR data[J]. 地球物理学报,2016.
APA	屠泓为,汪荣江,刁法启,张勇,万永革,&金明培.(2016).运用SDM方法研究2001年昆仑山口西M_S8.1地震破裂分布:GPS和InSAR联合反演的结果.地球物理学报.
MLA	屠泓为,et al."运用SDM方法研究2001年昆仑山口西M_S8.1地震破裂分布:GPS和InSAR联合反演的结果".地球物理学报 (2016).