气候变化领域集成服务门户(CCPortal): Present-day crustal deformation across the Daliang Shan, southeastern Tibetan Plateau constrained by a dense GPS network

CCPortal

DOI	10.1093/gji/ggac412
	Present-day crustal deformation across the Daliang Shan, southeastern Tibetan Plateau constrained by a dense GPS network
	Li, Yuhang; Song, Shangwu; Hao, Ming; Zhuang, Wenquan; Cui, Duxin; Yang, Fan; Wang, Qingliang
发表日期	2023
ISSN	0956-540X
EISSN	1365-246X
起始页码	1619
结束页码	1638
卷号	232 期号:3
英文摘要	The Daliang Shan is a tectonic unit that connects the active southeastern Tibetan Plateau with the stable South China block. As a newly generated (formed later than the Xianshuihe-Xiaojiang active fault system) seismotectonic zone induced by the Tibetan tectonics, the detailed constraints of the crustal deformation are central to the understanding of the kinematics and dynamics of the Tibetan expansion. This paper establishes and analyses a high-spatial resolution global positioning system (GPS) velocity field from a dense GPS network in this region. Our modelling results indicate that, in contrast to the equivalent sinistral strike-slip rate of approximately 5 mm yr(-1) on the Anninghe-Zemuhe and Daliangshan faults, their inferred interseismic locking depth varies within a large range. The southern segment of the Anninghe Fault and the middle segment of the Daliangshan Fault have deep locking depths of similar to 13 km, indicating that the seismic risk is high in these areas. In addition, the detectable counter-clockwise rotation rate of 0.35 +/- 0.12 degrees Myr(-1) of the Mabian block makes a significant contribution of similar to 50 per cent to the strike-slip motion on its boundary faults. This counter-clockwise rotation may be induced by a left-lateral shear gradient with southeastward motion relative to the South China-fixed reference frame, indicating the significance of a simple-shear pattern in exploring the kinematics of the encroachment of the Tibetan tectonics upon a stable block (craton).
关键词	Space geodetic surveys Asia Earthquake hazards Continental tectonics: strike-slip and transform Dynamics: seismotectonics Tibet
英文关键词	SICHUAN-YUNNAN REGION; LATE QUATERNARY; SURFACE DEFORMATION; FAULT ZONE; SOUTHWEST CHINA; SLIP-RATE; EARTHQUAKE; BEHAVIOR; BLOCK; TECTONICS
WOS研究方向	Geochemistry & Geophysics
WOS记录号	WOS:000880381400011
来源期刊	GEOPHYSICAL JOURNAL INTERNATIONAL
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/283652
作者单位	China Earthquake Administration; The Second Monitoring & Application Center, CEA
推荐引用方式 GB/T 7714	Li, Yuhang,Song, Shangwu,Hao, Ming,et al. Present-day crustal deformation across the Daliang Shan, southeastern Tibetan Plateau constrained by a dense GPS network[J],2023,232(3).
APA	Li, Yuhang.,Song, Shangwu.,Hao, Ming.,Zhuang, Wenquan.,Cui, Duxin.,...&Wang, Qingliang.(2023).Present-day crustal deformation across the Daliang Shan, southeastern Tibetan Plateau constrained by a dense GPS network.GEOPHYSICAL JOURNAL INTERNATIONAL,232(3).
MLA	Li, Yuhang,et al."Present-day crustal deformation across the Daliang Shan, southeastern Tibetan Plateau constrained by a dense GPS network".GEOPHYSICAL JOURNAL INTERNATIONAL 232.3(2023).