DOI: 10.1002/2014GL060427
论文题名: Step-like migration of early aftershocks following the 2007 Mw 6.7 Noto-Hanto earthquake, Japan
作者: Kato A. ; Obara K.
刊名: Geophysical Research Letters
ISSN: 0094-10611
EISSN: 1944-10342
出版年: 2014
卷: 41, 期: 11 起始页码: 3864
结束页码: 3869
语种: 英语
英文关键词: afterslip
; early aftershocks
; expansion of aftershock area
; step-like migration of seismicity front
; the 2007 Noto-Hanto earthquake Japan
Scopus关键词: Expansion
; Aftershock sequence
; afterslip
; early aftershocks
; Earthquake catalogs
; Logarithmic functions
; Spatial correlations
; step-like migration of seismicity front
; the 2007 Noto-Hanto earthquake Japan
; Earthquakes
; aftershock
; earthquake event
; seismic data
; slip rate
; Chubu
; Honshu
; Ishikawa
; Japan
; Noto Peninsula
英文摘要: Seismic data reveal that the aftershock zone expands with time after a main shock event. Here we examine the aftershock sequence recorded during the first 32days following the 2007 Noto-Hanto earthquake, Japan. By applying a matched-filter technique to the data, we detected about 10 times more events than those listed in the routinely constructed earthquake catalog. The aftershock area expanded along the fault strike as a logarithmic function of time, beginning immediately after the main shock. Aftershock expansion toward the SW was especially extensive and developed more rapidly than toward the NE. Interestingly, the aftershock area expanded in a step-like manner by the activation of a series of spatially clustered seismic bursts. Spatial correlation between the aftershock extension and the afterslip distribution suggests that the expansion of the aftershock area could be mainly driven by aseismic afterslip. The aftershock area continues to expand, even though 7years have now passed since the main shock. © 2014. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84902051308&doi=10.1002%2f2014GL060427&partnerID=40&md5=ae1a21ea0852a92150b0c466b8ba35bd
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7875
Appears in Collections: 气候减缓与适应
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作者单位: Earthquake and Volcano Research Center, Graduate School of Environmental Studies, Nagoya University, Nagoya, Japan
Recommended Citation:
Kato A.,Obara K.. Step-like migration of early aftershocks following the 2007 Mw 6.7 Noto-Hanto earthquake, Japan[J]. Geophysical Research Letters,2014-01-01,41(11).