气候变化领域集成服务门户(CCPortal): Dynamic Rupture Simulations of the M6.4 and M7.1 July 2019 Ridgecrest; California; Earthquakes

CCPortal

DOI	10.1029/2019GL086020
	Dynamic Rupture Simulations of the M6.4 and M7.1 July 2019 Ridgecrest; California; Earthquakes
	Lozos J.C.; Harris R.A.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:7
英文摘要	The largest earthquakes of the 2019 Ridgecrest, California, sequence were a M6.4 left-lateral rupture followed 34 hr later by a M7.1 on a perpendicular right-lateral fault. We use dynamic rupture modeling to address the questions of why the first earthquake did not propagate through the right-lateral fault in one larger event, whether stress changes from the M6.4 were necessary for the M7.1 to occur, and how the Ridgecrest earthquakes affected the nearby Garlock Fault. We find that dynamic clamping and shear stress reduction confined surface rupture in the M6.4 to the left-lateral fault. We also find that stress changes from the M6.4 were not necessary to allow a M7.1 on the right-lateral fault but that they affected the slip and likely accelerated the timing of the M7.1. Lastly, we find that the Ridgecrest earthquakes may have brought the central Garlock Fault closer to failure. ©2020. The Authors.
英文关键词	Earthquakes; Shear stress; California; Confined surfaces; Dynamic rupture models; Dynamic ruptures; Garlock; Stress changes; Stress reduction; Faulting; dynamic response; earthquake; earthquake rupture; fault; shear stress; slip; California; United States
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/170499
作者单位	Department of Geological Sciences, California State University, Northridge, Northridge, CA, United States; Earthquake Science Center, U.S. Geological Survey, Moffett Field, CA, United States
推荐引用方式 GB/T 7714	Lozos J.C.,Harris R.A.. Dynamic Rupture Simulations of the M6.4 and M7.1 July 2019 Ridgecrest; California; Earthquakes[J],2020,47(7).
APA	Lozos J.C.,&Harris R.A..(2020).Dynamic Rupture Simulations of the M6.4 and M7.1 July 2019 Ridgecrest; California; Earthquakes.Geophysical Research Letters,47(7).
MLA	Lozos J.C.,et al."Dynamic Rupture Simulations of the M6.4 and M7.1 July 2019 Ridgecrest; California; Earthquakes".Geophysical Research Letters 47.7(2020).