气候变化领域集成服务门户(CCPortal): Interseismic Coupling, Asperity Distribution, and Earthquake Potential on Major Faults in Southeastern Tibet

CCPortal

DOI	10.1029/2022GL101209
	Interseismic Coupling, Asperity Distribution, and Earthquake Potential on Major Faults in Southeastern Tibet
	Li, Yanchuan; Shan, Xinjian; Gao, Zhiyu; Huang, Xing
发表日期	2023
ISSN	0094-8276
EISSN	1944-8007
卷号	50 期号:8
英文摘要	Southeastern (SE) Tibet is one of the most seismically active regions in mainland China, but the spatial distribution of interseismic coupling that quantifies seismic hazard is unknown along most major faults. In this study, we constructed an elastic block model to invert Global Positioning System data for slip rates and locking coefficients along 20 major faults in SE Tibet. Our results identify 27 strongly coupled fault segments with locking coefficients >0.5, defined as potential seismogenic asperities, extending laterally for 36-330 km. Quantitative calculations of seismic moment budgets on these seismogenic asperities indicate that they are capable of generating Mw 6.4-7.7 earthquakes in the next few decades, of which the Anninghe, Daliangshan and Red River faults have the potential for Mw >= 7.5 earthquakes. The interseismic coupling model provides a component for probabilistic analysis of future seismic hazards in densely populated Southwest China.
英文关键词	SICHUAN-YUNNAN REGION; AVERAGE SLIP-RATE; PLATEAU; LOCKING; BLOCKS; RATES; ZONE
WOS研究方向	Geosciences, Multidisciplinary
WOS记录号	WOS:000973043800001
来源期刊	GEOPHYSICAL RESEARCH LETTERS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/282963
作者单位	China Earthquake Administration
推荐引用方式 GB/T 7714	Li, Yanchuan,Shan, Xinjian,Gao, Zhiyu,et al. Interseismic Coupling, Asperity Distribution, and Earthquake Potential on Major Faults in Southeastern Tibet[J],2023,50(8).
APA	Li, Yanchuan,Shan, Xinjian,Gao, Zhiyu,&Huang, Xing.(2023).Interseismic Coupling, Asperity Distribution, and Earthquake Potential on Major Faults in Southeastern Tibet.GEOPHYSICAL RESEARCH LETTERS,50(8).
MLA	Li, Yanchuan,et al."Interseismic Coupling, Asperity Distribution, and Earthquake Potential on Major Faults in Southeastern Tibet".GEOPHYSICAL RESEARCH LETTERS 50.8(2023).