气候变化领域集成服务门户(CCPortal): Upper to middle crustal structure beneath the Longmen Shan fault zone: Implications for the growth of eastern Tibet

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DOI	10.1016/j.jseaes.2023.105561
	Upper to middle crustal structure beneath the Longmen Shan fault zone: Implications for the growth of eastern Tibet
	Zhao, Panpan; Campillo, Michel; Chen, Jiuhui; Liu, Qiyuan; Li, Shuncheng; Li, Yu
发表日期	2023
ISSN	1367-9120
EISSN	1878-5786
卷号	245
英文摘要	The Longmen Shan (LMS) fault zone is located on the eastern margin of the Tibetan Plateau and is a repre-sentative area for studying the eastward growth of the plateau. In this study, we present a 3-D crustal S-wave velocity structure beneath the LMS fault zone and its adjacent regions with a lateral resolution of similar to 10 km down to a depth of 25 km from data recorded at 57 stations over one year using seismic ambient noise imaging techniques. The high and steep topography of the LMS is considered when building the high-resolution image of the upper and middle crust. The imaging provides further evidence for the high-angle listric characteristics of the LMS faults south of Beichuan, and the feature disappears toward the north, indicating differences in deformation from south to north. The structural characteristics are well correlated with the aftershock distribution and the rupture of the Wenchuan earthquake, which indicate a change in the mechanism from mostly thrust in the south to mostly strike slip in the north. The velocity structure controls the downward stretch of the faults. The results support that crustal channel flow is responsible for the growth of eastern Tibet. The eastward movement of the weak crustal material was blocked by the hard crust surrounding the Minshan uplift, resulting in great differ-ences in the velocity structures and fault properties south and north of Beichuan.
关键词	Longmen Shan fault Plateau growth High -resolution crustal structure Ambient noise tomography
英文关键词	WAVE VELOCITY STRUCTURE; WENCHUAN EARTHQUAKE; PLATEAU; DEFORMATION; OBLIQUE; SICHUAN; FLOW; TOMOGRAPHY; EVOLUTION; REVERSE
WOS研究方向	Geosciences, Multidisciplinary
WOS记录号	WOS:000925407700001
来源期刊	JOURNAL OF ASIAN EARTH SCIENCES
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/283205
作者单位	China Earthquake Administration; Institute of Geology, CEA; China Earthquake Administration; Institute of Earthquake Forecasting, CEA; Communaute Universite Grenoble Alpes; Universite Grenoble Alpes (UGA); Communaute Universite Grenoble Alpes; Universite Grenoble Alpes (UGA); Centre National de la Recherche Scientifique (CNRS); Institut de Recherche pour le Developpement (IRD); Universite Gustave-Eiffel; Universite Savoie Mont Blanc
推荐引用方式 GB/T 7714	Zhao, Panpan,Campillo, Michel,Chen, Jiuhui,et al. Upper to middle crustal structure beneath the Longmen Shan fault zone: Implications for the growth of eastern Tibet[J],2023,245.
APA	Zhao, Panpan,Campillo, Michel,Chen, Jiuhui,Liu, Qiyuan,Li, Shuncheng,&Li, Yu.(2023).Upper to middle crustal structure beneath the Longmen Shan fault zone: Implications for the growth of eastern Tibet.JOURNAL OF ASIAN EARTH SCIENCES,245.
MLA	Zhao, Panpan,et al."Upper to middle crustal structure beneath the Longmen Shan fault zone: Implications for the growth of eastern Tibet".JOURNAL OF ASIAN EARTH SCIENCES 245(2023).