气候变化领域集成服务门户(CCPortal): A further source of Tokyo earthquakes and Pacific Ocean tsunamis

CCPortal

DOI	10.1038/s41561-021-00812-2
	A further source of Tokyo earthquakes and Pacific Ocean tsunamis
	Pilarczyk J.E.; Sawai Y.; Namegaya Y.; Tamura T.; Tanigawa K.; Matsumoto D.; Shinozaki T.; Fujiwara O.; Shishikura M.; Shimada Y.; Dura T.; Horton B.P.; Parnell A.C.; Vane C.H.
发表日期	2021
ISSN	1752-0894
卷号	14 期号:10
英文摘要	Earthquake hazard assessments for the Tokyo Region are complicated by the trench–trench triple junction where the oceanic Philippine Sea Plate not only underthrusts a continental plate but is also being subducted by the Pacific Plate. Great thrust earthquakes and associated tsunamis are historically recognized hazards from the Continental/Philippine Sea (Sagami Trough) and Continental/Pacific (Japan Trench) plate boundaries but not from the Philippine Sea/Pacific (Izu–Bonin Trench) boundary alone. Here we employed a series of historical and hypothetical rupture models to explain the widespread distribution of geological evidence for an unusually large tsunami found along 50 km of coastline east of Tokyo. Dating to about 1,000 years ago, this inferred tsunami predates local written history by several hundred years. We found that the inland extent of its sand sheet is best explained, in computer simulations, by displacement on one of the three plate boundaries offshore of the Boso Peninsula, which corresponds to the triple junction. The minimum magnitude scenario capable of generating the inland extent of inundation involves displacement along the Philippine Sea/Pacific boundary megathrust. This plate-boundary fault adds another potential source for earthquakes in the Tokyo Region and tsunamis in the Pacific Ocean. © 2021, The Author(s), under exclusive licence to Springer Nature Limited.
语种	英语
scopus关键词	displacement; plate boundary; rupture; seismic hazard; Tohoku earthquake 2011; triple junction; tsunami; Boso Peninsula; Chiba; Honshu; Japan; Japan; Japan Trench; Kanto; Pacific Ocean; Pacific Ocean; Pacific Ocean; Philippine Sea; Tokyo
来源期刊	Nature Geoscience
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/250861
作者单位	Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Japan; Centre for Natural Hazards Research (CNHR), Department of Earth Sciences, Simon Fraser University, Burnaby, BC, Canada; Division of Marine Science, School of Ocean Science and Engineering, University of Southern Mississippi, Stennis Space Center, MS, United States; Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Japan; Graduate School of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Japan; Department of Geosciences, Virginia Tech, Blacksburg, VA, United States; Earth Observatory of Singapore, Nanyang Technological University, Singapore, Singapore; Asian School of the Environment, Nanyang Technological University, Singapore, Singapore; Hamilton Institute and Insight Centre for Data Analysis, Maynooth University, Kildare, Ireland; British Geological Survey, Keyworth, United Kingdom
推荐引用方式 GB/T 7714	Pilarczyk J.E.,Sawai Y.,Namegaya Y.,et al. A further source of Tokyo earthquakes and Pacific Ocean tsunamis[J],2021,14(10).
APA	Pilarczyk J.E..,Sawai Y..,Namegaya Y..,Tamura T..,Tanigawa K..,...&Vane C.H..(2021).A further source of Tokyo earthquakes and Pacific Ocean tsunamis.Nature Geoscience,14(10).
MLA	Pilarczyk J.E.,et al."A further source of Tokyo earthquakes and Pacific Ocean tsunamis".Nature Geoscience 14.10(2021).