DOI: 10.1002/2014GL062929
论文题名: Activation of very low frequency earthquakes by slow slip events in the Ryukyu Trench
作者: Nakamura M. ; Sunagawa N.
刊名: Geophysical Research Letters
ISSN: 0094-8948
EISSN: 1944-8679
出版年: 2015
卷: 42, 期: 4 起始页码: 1076
结束页码: 1082
语种: 英语
英文关键词: Coulomb failure stress
; interplate coupling
; Ryukyu Trench
; slow earthquake
; slow slip event
; very low frequency earthquake
Scopus关键词: Chemical activation
; Couplings
; Broad-band seismometers
; Coulomb failure stress
; Interplate coupling
; Large clusters
; Plate interfaces
; Slow slip events
; Source area
; Very low frequency
; Earthquakes
; Coulomb criterion
; earthquake magnitude
; failure analysis
; long-term change
; seismograph
; slip rate
; source parameters
; stress field
; thrust
; tsunami
; Pacific Ocean
; Philippine Sea
; Ryukyu Trench
英文摘要: Long-term activity of shallow very low frequency earthquakes (VLFEs) in the Ryukyu Trench, unassociated with recent large thrust earthquakes, was analyzed using a broadband seismometer network. The distribution of shallow VLFEs was divided into three large clusters. The activity of the VLFEs is modulated by repetitive slow slip events, and the activity of these VLFEs increases to 2-3 times its ordinary rate at 10-20days after the onset of the slow slip events. The activation of VLFEs could be generated by small increases on the order of approximately 0.1-0.5kPa in Coulomb failure stress, suggesting that stress in the plate interface where the VLFEs occur is frequently released in small amounts. Moreover, the distribution of VLFEs is complementary to the historical tsunami source area and locked area. The distribution of the VLFEs indicates heterogeneity in interplate coupling along the trench. ©2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84924901812&doi=10.1002%2f2014GL062929&partnerID=40&md5=1906d1d954e2dc77b5f2ca741973c2db
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8564
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: Faculty of Science, University of the Ryukyus, Okinawa, Nishihara-cho, Japan
Recommended Citation:
Nakamura M.,Sunagawa N.. Activation of very low frequency earthquakes by slow slip events in the Ryukyu Trench[J]. Geophysical Research Letters,2015-01-01,42(4).