气候变化领域集成服务门户(CCPortal): Rupture Process of the 2020 Caribbean Earthquake Along the Oriente Transform Fault; Involving Supershear Rupture and Geometric Complexity of Fault

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DOI	10.1029/2020GL090899
	Rupture Process of the 2020 Caribbean Earthquake Along the Oriente Transform Fault; Involving Supershear Rupture and Geometric Complexity of Fault
	Tadapansawut T.; Okuwaki R.; Yagi Y.; Yamashita S.
发表日期	2021
ISSN	0094-8276
卷号	48 期号:1
英文摘要	A large strike-slip earthquake occurred in the Caribbean Sea on January 28, 2020. We inverted teleseismic P waveforms from the earthquake to construct a finite-fault model by a new method of inversion that simultaneously resolves the spatiotemporal evolution of fault geometry and slip. The model showed almost-unilateral rupture propagation westward from the epicenter along a 300 km section of the Oriente transform fault with two episodes of rupture at speeds exceeding the local shear-wave velocity. Our modeling indicated that the 2020 Caribbean earthquake rupture encountered a bend in the fault system associated with a bathymetric feature near the source region. The geometric complexity of the fault system triggered multiple rupture episodes and a complex rupture evolution. Our analysis of the earthquake revealed complexity of rupture process and fault geometry previously unrecognized for an oceanic transform fault that was thought to be part of a simple linear transform fault system. © 2020. American Geophysical Union. All Rights Reserved.
英文关键词	Bathymetry; Earthquakes; Geometry; Shear flow; Shear waves; Transform faults; Wave propagation; Bathymetric features; Finite fault modeling; Geometric complexity; Rupture propagation; Shear wave velocity; Spatiotemporal evolution; Strike-slip earthquakes; Teleseismic P waveforms; Mathematical transformations
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/169228
作者单位	Graduate School of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan; Faculty of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan; Mountain Science Center, University of Tsukuba, Tsukuba, Ibaraki, Japan; COMET, School of Earth and Environment, University of Leeds, Leeds, United Kingdom
推荐引用方式 GB/T 7714	Tadapansawut T.,Okuwaki R.,Yagi Y.,et al. Rupture Process of the 2020 Caribbean Earthquake Along the Oriente Transform Fault; Involving Supershear Rupture and Geometric Complexity of Fault[J],2021,48(1).
APA	Tadapansawut T.,Okuwaki R.,Yagi Y.,&Yamashita S..(2021).Rupture Process of the 2020 Caribbean Earthquake Along the Oriente Transform Fault; Involving Supershear Rupture and Geometric Complexity of Fault.Geophysical Research Letters,48(1).
MLA	Tadapansawut T.,et al."Rupture Process of the 2020 Caribbean Earthquake Along the Oriente Transform Fault; Involving Supershear Rupture and Geometric Complexity of Fault".Geophysical Research Letters 48.1(2021).