气候变化领域集成服务门户(CCPortal): Millimeter-Scale Tsunami Detected by a Wide and Dense Observation Array in the Deep Ocean: Fault Modeling of an Mw 6.0 Interplate Earthquake off Sanriku; NE Japan

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DOI	10.1029/2019GL085842
	Millimeter-Scale Tsunami Detected by a Wide and Dense Observation Array in the Deep Ocean: Fault Modeling of an Mw 6.0 Interplate Earthquake off Sanriku; NE Japan
	Kubota T.; Saito T.; Suzuki W.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:4
英文摘要	A new dense and widely distributed tsunami observation network installed off northeast Japan detected millimeter-scale tsunamis from an Mw 6.0 shallow interplate earthquake on 20 August 2016. Based on the fault model deduced from this data set, we obtained a stress drop of 1.5 MPa for this event, similar to those associated with typical interplate earthquakes. The rupture area was unlikely to overlap with regions where slow earthquakes occur, such as low-frequency-tremors and very-low-frequency-earthquakes. The results demonstrated that this new network has dramatically increased the detectability of millimeter-scale tsunamis. Some near-source stations were contaminated by large pressure offset signals irrelevant to tsunami, and we must therefore be careful when analyzing these data. Nonetheless, the new array enables estimations of the stress drops of moderate offshore earthquakes and can be used to elucidate the spatial variation of mechanical properties along the plate interface with much higher resolution than previously possible. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Drops; Earthquakes; Offshore oil well production; Tsunamis; Fault model; Interplate earthquakes; Millimeter-scale; S-net; Sanriku; Faulting; array; earthquake event; earthquake rupture; observational method; spatial variation; tsunami; Honshu; Iwate; Japan; Sanriku; Tohoku
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/170701
作者单位	National Research Institute for Earth Science and Disaster Resilience, Tsukuba, Japan
推荐引用方式 GB/T 7714	Kubota T.,Saito T.,Suzuki W.. Millimeter-Scale Tsunami Detected by a Wide and Dense Observation Array in the Deep Ocean: Fault Modeling of an Mw 6.0 Interplate Earthquake off Sanriku; NE Japan[J],2020,47(4).
APA	Kubota T.,Saito T.,&Suzuki W..(2020).Millimeter-Scale Tsunami Detected by a Wide and Dense Observation Array in the Deep Ocean: Fault Modeling of an Mw 6.0 Interplate Earthquake off Sanriku; NE Japan.Geophysical Research Letters,47(4).
MLA	Kubota T.,et al."Millimeter-Scale Tsunami Detected by a Wide and Dense Observation Array in the Deep Ocean: Fault Modeling of an Mw 6.0 Interplate Earthquake off Sanriku; NE Japan".Geophysical Research Letters 47.4(2020).