气候变化领域集成服务门户(CCPortal): Multifault Models of the 2019 Ridgecrest Sequence Highlight Complementary Slip and Fault Junction Instability

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DOI	10.1029/2020GL089802
	Multifault Models of the 2019 Ridgecrest Sequence Highlight Complementary Slip and Fault Junction Instability
	Jia Z.; Wang X.; Zhan Z.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:17
英文摘要	The 2019 Ridgecrest Mw 6.4 and Mw 7.1 earthquakes ruptured a complex fault system, posing challenges in understanding their physical processes. Modeling of the ruptures relies on fault geometries at depth, which are usually assumed based on surface traces and aftershocks. Here we use seismic and geodetic data to jointly constrain the fault geometries and slip distributions. We first represent the first-order rupture processes with a series of subevents, then conduct slip inversions with subevent-guided fault geometries. We find that the foreshock sequentially ruptured the NW and SW striking faults starting from their junction. The mainshock initiated at a complex three-fault junction along the extension of the foreshock NW rupture, with major slip first occurring bilaterally near the hypocenter and then minor unilateral slip later to the southeast end. The slip distributions of the foreshock and mainshock are complementary to each other on the overlapping fault section. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Earthquake effects; Geometry; Complex fault system; Fault geometry; Fault sections; Geodetic data; Physical process; Rupture process; Slip distribution; Surface traces; Fault slips; aftershock; detection method; earthquake rupture; fault; foreshock; model; strike-slip fault
语种	英语
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/169769
作者单位	Seismological Laboratory, California Institute of Technology, Pasadena, CA, United States
推荐引用方式 GB/T 7714	Jia Z.,Wang X.,Zhan Z.. Multifault Models of the 2019 Ridgecrest Sequence Highlight Complementary Slip and Fault Junction Instability[J],2020,47(17).
APA	Jia Z.,Wang X.,&Zhan Z..(2020).Multifault Models of the 2019 Ridgecrest Sequence Highlight Complementary Slip and Fault Junction Instability.Geophysical Research Letters,47(17).
MLA	Jia Z.,et al."Multifault Models of the 2019 Ridgecrest Sequence Highlight Complementary Slip and Fault Junction Instability".Geophysical Research Letters 47.17(2020).