气候变化领域集成服务门户(CCPortal): Seismic velocity reduction and accelerated recovery due to earthquakes on the Longmenshan fault

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DOI	10.1038/s41561-019-0347-1
	Seismic velocity reduction and accelerated recovery due to earthquakes on the Longmenshan fault
	Pei, Shunping; Niu, Fenglin; Ben-Zion, Yehuda; Sun, Quan; Liu, Yanbing; Xue, Xiaotian; Sub, Jinrong; Shao, Zhigang
通讯作者	Niu, FL (通讯作者)
发表日期	2019
ISSN	1752-0894
EISSN	1752-0908
起始页码	387
结束页码	+
卷号	12 期号:5
英文摘要	Various studies report on temporal changes of seismic velocities in the crust and attempt to relate the observations to changes of stress and material properties around faults. Although there are growing numbers of observations on coseismic velocity reductions, generally there is a lack of detailed observations of the healing phases. Here we report on a pronounced coseismic reduction of velocities around two locked sections (asperities) of the Longmenshan fault with a large slip during the 2008 M-w 7.9 Wenchuan earthquake and subsequent healing of the velocities. The healing phase accelerated significantly at the southern asperity right after the nearby 2013 M-w 6.6 Lushan earthquake. The results were obtained by joint inversions of travel time data at four different periods across the Wenchuan and Lushan earthquakes. The rapid acceleration of healing in response to the Lushan earthquake provides unique evidence for the high sensitivity of seismic velocities to stress changes. We suggest that stress redistribution plays an important role in rebuilding fault strength.
关键词	7.9 WENCHUAN EARTHQUAKE STRONG GROUND MOTION SAN-ANDREAS FAULT TEMPORAL-CHANGES M-W COMPRESSIONAL WAVES STRESS TRANSFER PARKFIELD JAPAN ZONE
语种	英语
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:000467814100016
来源期刊	NATURE GEOSCIENCE
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/259611
推荐引用方式 GB/T 7714	Pei, Shunping,Niu, Fenglin,Ben-Zion, Yehuda,et al. Seismic velocity reduction and accelerated recovery due to earthquakes on the Longmenshan fault[J]. 中国科学院青藏高原研究所,2019,12(5).
APA	Pei, Shunping.,Niu, Fenglin.,Ben-Zion, Yehuda.,Sun, Quan.,Liu, Yanbing.,...&Shao, Zhigang.(2019).Seismic velocity reduction and accelerated recovery due to earthquakes on the Longmenshan fault.NATURE GEOSCIENCE,12(5).
MLA	Pei, Shunping,et al."Seismic velocity reduction and accelerated recovery due to earthquakes on the Longmenshan fault".NATURE GEOSCIENCE 12.5(2019).