Orthogonal Fault Rupture and Rapid Postseismic Deformation Following 2019 Ridgecrest, California, Earthquake Sequence Revealed From Geodetic Observations

doi:10.1029/2019GL086888

GSTDTAP > 气候变化

DOI	10.1029/2019GL086888
	Orthogonal Fault Rupture and Rapid Postseismic Deformation Following 2019 Ridgecrest, California, Earthquake Sequence Revealed From Geodetic Observations
	Feng, Wanpeng 1,2; Samsonov, Sergey 3; Qiu, Qiang 4; Wang, Yuqing 1; Zhang, Peizhen 1,2; Li, Tao 5; Zheng, Wenjun 1,2
	2020-03-16
发表期刊	GEOPHYSICAL RESEARCH LETTERS
ISSN	0094-8276
EISSN	1944-8007
出版年	2020
卷号	47 期号:5
文章类型	Article
语种	英语
国家	Peoples R China; Canada; USA
英文摘要	We studied the 2019 Mw6.4 and Mw7.1 Ridgecrest, California, earthquake sequence, using Sentinel-1 and ALOS-2 coseismic interferograms and subpixel offsets to retrieve the three-dimensional (3-D) surface displacements. By inverting the 3-D displacements, optimal dip angles of the earthquake faults and the slip model were obtained. The interferometric synthetic aperture radar-based slip model supplemented with the analysis of GPS data shows that the Mw6.4 event ruptured two orthogonal faults and its major geodetic moment was released by sinistral motion on a NE-SW trending fault that dips 78 degrees NW. Right-lateral slip on NW-SE trending subvertical faults was responsible for the Mw7.1 earthquake. Postseismic analysis with U.S. Geological Survey earthquake catalog and GPS time series at site P595 shows that the postseismic surface deformation following the Mw7.1 event has similar temporal patterns with the postseismic moment release, but requires more energy. This implies that the early aftershocks were likely controlled by rapid afterslip following the mainshock.
领域	气候变化
收录类别	SCI-E
WOS记录号	WOS:000529112700048
WOS关键词	CENTRAL GARLOCK FAULT ; HECTOR MINE ; SLIP RATE ; SURFACE DEFORMATION ; STRAIN ACCUMULATION ; GPS ; SHEAR ; CONSTRAINTS ; INSAR ; FIELD
WOS类目	Geosciences, Multidisciplinary
WOS研究方向	Geology
引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/279753
专题	气候变化
作者单位	1.Sun Yat Sen Univ, Sch Earth Sci & Engn, Guangdong Prov Key Lab Geodynam & Geohazards, Guangzhou, Peoples R China; 2.Southern Marine Sci & Engn Guangdong Lab Zhuhai, Zhuhai, Peoples R China; 3.Nat Resources Canada, Canada Ctr Mapping & Earth Observat, Ottawa, ON, Canada; 4.Univ Southern Calif, Dept Earth Sci, Los Angeles, CA 90007 USA; 5.China Earthquake Adm, Inst Geol, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Feng, Wanpeng,Samsonov, Sergey,Qiu, Qiang,et al. Orthogonal Fault Rupture and Rapid Postseismic Deformation Following 2019 Ridgecrest, California, Earthquake Sequence Revealed From Geodetic Observations[J]. GEOPHYSICAL RESEARCH LETTERS,2020,47(5).
APA	Feng, Wanpeng.,Samsonov, Sergey.,Qiu, Qiang.,Wang, Yuqing.,Zhang, Peizhen.,...&Zheng, Wenjun.(2020).Orthogonal Fault Rupture and Rapid Postseismic Deformation Following 2019 Ridgecrest, California, Earthquake Sequence Revealed From Geodetic Observations.GEOPHYSICAL RESEARCH LETTERS,47(5).
MLA	Feng, Wanpeng,et al."Orthogonal Fault Rupture and Rapid Postseismic Deformation Following 2019 Ridgecrest, California, Earthquake Sequence Revealed From Geodetic Observations".GEOPHYSICAL RESEARCH LETTERS 47.5(2020).