DOI: 10.1002/2014GL062165
论文题名: Possible shallow slow slip events in Hyuga-nada, Nankai subduction zone, inferred from migration of very low frequency earthquakes
作者: Asano Y. ; Obara K. ; Matsuzawa T. ; Hirose H. ; Ito Y.
刊名: Geophysical Research Letters
ISSN: 0094-9046
EISSN: 1944-8777
出版年: 2015
卷: 42, 期: 2 起始页码: 331
结束页码: 338
语种: 英语
英文关键词: Hyuga-nada
; slow slip events
; subduction zone
; very low frequency earthquakes
Scopus关键词: Earthquakes
; Seismographs
; Broadband seismograms
; Cross correlation techniques
; Hyuga-nada
; Nankai subduction zone
; Slow slip events
; Spatiotemporal evolution
; Subduction zones
; Very low frequency
; Tectonics
; seismogram
; seismology
; slip rate
; spatiotemporal analysis
; subduction zone
; temporal evolution
; Bungo Channel
; China
; Japan
; Nankai
; Tianjin
英文摘要: We investigated the spatiotemporal evolution of a shallow very low frequency earthquake (sVLFE) swarm linked to the 2009/2010 long-term slow slip event (SSE) in the Bungo channel, southwestern Japan. Broadband seismograms were analyzed using a cross-correlation technique to detect sVLFEs having similar waveforms to template sVLFEs, and their relative locations were estimated. The sVLFEs exhibit clear migration over a distance of 150 km along the Nankai trough, similar to nonvolcanic tremors and deep very low frequency earthquakes (dVLFEs) accompanied by short-term SSEs on the downward extension of the seismogenic zone. This similarity between sVLFEs and dVLFEs suggests that SSEs occur in both deeper and shallower extensions of the seismogenic zone. The analyzed sVLFEs were likely caused by a shallow SSE that occurred from January to March 2010 following the initiation and acceleration of the long-term SSE. This temporal evolution may be caused by stress interaction between the shallow SSE and the long-term SSE. © 2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84923567643&doi=10.1002%2f2014GL062165&partnerID=40&md5=ad44c406f94ef43e6709ebfa05a14d15
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8662
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: National Research Institute for Earth Science and Disaster Prevention, Tsukuba, Japan
Recommended Citation:
Asano Y.,Obara K.,Matsuzawa T.,et al. Possible shallow slow slip events in Hyuga-nada, Nankai subduction zone, inferred from migration of very low frequency earthquakes[J]. Geophysical Research Letters,2015-01-01,42(2).