DOI: 10.1002/2016GL070298
论文题名: Acceleration of regional plate subduction beneath Kanto, Japan, after the 2011 Tohoku-oki earthquake
作者: Uchida N. ; Asano Y. ; Hasegawa A.
刊名: Geophysical Research Letters
ISSN: 0094-8668
EISSN: 1944-8399
出版年: 2016
卷: 43, 期: 17 起始页码: 9002
结束页码: 9008
语种: 英语
英文关键词: aseismic slip
; Kanto earthquake
; Philippine Sea plate
; plate motion
; repeating earthquake
; Tohoku-oki earthquake
Scopus关键词: Creep
; Geophysics
; Aseismic slip
; Philippine seas
; Plate motions
; Repeating earthquake
; Tohoku-Oki earthquakes
; Earthquakes
; acceleration
; creep
; oceanic crust
; plate boundary
; plate motion
; postseismic process
; regional geology
; seismicity
; slip rate
; subduction
; Tohoku earthquake 2011
; Honshu
; Japan
; Kanto
; Pacific Ocean
; Philippine Sea
英文摘要: Two oceanic plates (the Pacific (PA) and Philippine Sea (PH)) subduct beneath the land plate, and they forms deeper (PH-PA) and shallower (land-PH) plate boundaries beneath Kanto. Remarkably enhanced seismicity was observed in the densely populated area after the 2011 Tohoku-oki earthquake, which cannot simply be explained by the southern expansion of the postseismic slip of the earthquake. We examine interplate repeating earthquakes to constrain the relative plate motion across aseismically slipping faults. The repeater slip rates show creep rates in the deeper and shallower boundaries, respectively, increased to 2.4–6.6 times and 1.3–6.2 times the pre-Tohoku-oki rates. In addition, the repeater slip directions show no change larger than 4° in the deeper boundary. The interplate creep rates and slip directions suggest that regional movements of both the two plates had accelerated. They probably caused the seismicity increase, frequent slow slips on the shallower boundary, and enhanced probability of larger earthquakes. ©2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84987668295&doi=10.1002%2f2016GL070298&partnerID=40&md5=8fb3feddf0bc02a9581544da7f63ee71
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9631
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Graduate School of Science, Tohoku University, Sendai, Japan
Recommended Citation:
Uchida N.,Asano Y.,Hasegawa A.. Acceleration of regional plate subduction beneath Kanto, Japan, after the 2011 Tohoku-oki earthquake[J]. Geophysical Research Letters,2016-01-01,43(17).