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DOI	10.1016/j.epsl.2020.116728
	The 25 March 2020 MW 7.5 Paramushir, northern Kuril Islands earthquake and major (MW ≥ 7.0) near-trench intraplate compressional faulting
	Ye L.; Lay T.; Kanamori H.
发表日期	2021
ISSN	0012821X
卷号	556
英文摘要	Large compressional-faulting earthquakes located relatively deep in oceanic lithosphere entering subduction zones are primarily caused by plate bending stress, but their timing, depth extent and size can be influenced by temporally-varying shear stress on the plate boundary. The 25 March 2020 MW 7.5 event in the Pacific plate seaward of Paramushir Island (northern Kuril Islands), is among the largest recorded events of this type. Its rupture extends along a large-slip region in the southwestern portion of the 1952 Kamchatka MW 9.0 rupture zone. This region has somewhat lower interplate coupling than the megathrust fault along Kamchatka to the northeast, but there could be 68 yrs of strain accumulation. The 2020 event is considered in the context of the 24 recorded major (MW≥7.0) near-trench intraplate compressional-faulting events. An updated compilation of temporally varying near-trench intraslab faulting relative to major interplate ruptures indicates that the stress cycles on the plate boundary influence both extensional and compressional near-trench faulting caused by plate bending. Particularly noteworthy are such events seaward of areas presumed to be in an advanced stage of their seismic cycle, including relatively shallow compressional events along the 1944 MW 8.1 Tonankai, Japan rupture zone, along with activity along the 1952 Kamchatka and 1922 Chile rupture zones. © 2020 The Author(s)
关键词	2020 Kuril slab earthquake near-trench intraplate compressional faulting outer trench slope faulting temporal cycles slab bending earthquakes
英文关键词	Earthquake effects; Shear stress; Faulting events; Interplate coupling; Oceanic lithosphere; Pacific plates; Plate bending; Plate boundaries; Strain accumulations; Subduction zones; Faulting; bending; earthquake damage; earthquake magnitude; earthquake rupture; fault zone; intraplate process; plate motion; slab; trench; Kuril Islands; Paramushir; Russian Federation; Sakhalin
语种	英语
来源期刊	Earth and Planetary Science Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/203354
作者单位	Guangdong Provincial Key Lab of Geodynamics and Geohazards, School of Earth Sciences and Engineering, Sun Yat-sen University, Guangzhou, China; Department of Earth and Planetary Sciences, University of California Santa Cruz, Santa Cruz, CA 95064, United States; Seismological Laboratory, California Institute of Technology, Pasadena, CA 91125, United States
推荐引用方式 GB/T 7714	Ye L.,Lay T.,Kanamori H.. The 25 March 2020 MW 7.5 Paramushir, northern Kuril Islands earthquake and major (MW ≥ 7.0) near-trench intraplate compressional faulting[J],2021,556.
APA	Ye L.,Lay T.,&Kanamori H..(2021).The 25 March 2020 MW 7.5 Paramushir, northern Kuril Islands earthquake and major (MW ≥ 7.0) near-trench intraplate compressional faulting.Earth and Planetary Science Letters,556.
MLA	Ye L.,et al."The 25 March 2020 MW 7.5 Paramushir, northern Kuril Islands earthquake and major (MW ≥ 7.0) near-trench intraplate compressional faulting".Earth and Planetary Science Letters 556(2021).