气候变化领域集成服务门户(CCPortal): A Decade of Lessons Learned from the 2011 Tohoku-Oki Earthquake

CCPortal

DOI	10.1029/2020RG000713
	A Decade of Lessons Learned from the 2011 Tohoku-Oki Earthquake
	Uchida N.; Bürgmann R.
发表日期	2021
ISSN	87551209
卷号	59 期号:2
英文摘要	The 2011 Mw 9.0 Tohoku-oki earthquake is one of the world's best-recorded ruptures. In the aftermath of this devastating event, it is important to learn from the complete record. We describe the state of knowledge of the megathrust earthquake generation process before the earthquake, and what has been learned in the decade since the historic event. Prior to 2011, there were a number of studies suggesting the potential of a great megathrust earthquake in NE Japan from geodesy, geology, seismology, geomorphology, and paleoseismology, but results from each field were not enough to enable a consensus assessment of the hazard. A transient unfastening of interplate coupling and increased seismicity were recognized before the earthquake, but did not lead to alerts. Since the mainshock, follow-up studies have (1) documented that the rupture occurred in an area with a large interplate slip deficit, (2) established large near-trench coseismic slip, (3) examined structural anomalies and fault-zone materials correlated with the coseismic slip, (4) clarified the historical and paleoseismic recurrence of M∼9 earthquakes, and (5) identified various kinds of possible precursors. The studies have also illuminated the heterogeneous distribution of coseismic rupture, aftershocks, slow earthquakes and aseismic afterslip, and the enduring viscoelastic response, which together make up the complex megathrust earthquake cycle. Given these scientific advances, the enhanced seismic hazard of an impending great earthquake can now be more accurately established, although we do not believe such an event could be predicted with confidence. © 2021. The Authors.
英文关键词	earthquake cycle; earthquake prediction; megathrust earthquake; seismic hazard; subduction zone
语种	英语
来源期刊	Reviews of Geophysics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/188060
作者单位	Graduate School of Science and International Research Institute of Disaster Science, Tohoku University, Sendai, Japan; Department of Earth and Planetary Science, University of California, Berkeley, CA, United States
推荐引用方式 GB/T 7714	Uchida N.,Bürgmann R.. A Decade of Lessons Learned from the 2011 Tohoku-Oki Earthquake[J],2021,59(2).
APA	Uchida N.,&Bürgmann R..(2021).A Decade of Lessons Learned from the 2011 Tohoku-Oki Earthquake.Reviews of Geophysics,59(2).
MLA	Uchida N.,et al."A Decade of Lessons Learned from the 2011 Tohoku-Oki Earthquake".Reviews of Geophysics 59.2(2021).