DOI: 10.1002/2014GL062792
论文题名: Shallow crustal permeability enhancement in central Japan due to the 2011 Tohoku earthquake
作者: Kinoshita C. ; Kano Y. ; Ito H.
刊名: Geophysical Research Letters
ISSN: 0094-8984
EISSN: 1944-8715
出版年: 2015
卷: 42, 期: 3 起始页码: 773
结束页码: 780
语种: 英语
英文关键词: dynamic stress
; hydraulic diffusivity
; permeability
; pore pressure
; static stress
; Tohoku earthquake
Scopus关键词: Diffusion
; Mechanical permeability
; Pore pressure
; 2011 tohoku earthquakes
; Crustal permeability
; Dynamic stress
; Hydraulic diffusivity
; Permeability enhancement
; Permeability increase
; Static stress
; Tohoku earthquakes
; Earthquakes
; diffusivity
; earthquake magnitude
; elastic modulus
; permeability
; pore pressure
; rock mechanics
; Tohoku earthquake 2011
; Chubu
; Gifu
; Honshu
; Japan
; Kamioka Mine
英文摘要: Pore pressure decreased at the Kamioka mine in central Japan after the Tohoku earthquake (M9.0) on 11 March 2011, which can be attributed to a permeability increase. We focus on the Earth's tidal response before and after the earthquake to evaluate rock permeability change through hydraulic diffusivity change. If we assume a constant elastic modulus, hydraulic diffusivity is found to increase from 3.3 to 6.7m2/s after the Tohoku earthquake. We also analyzed data before and after the 2007 Noto Hanto (M6.9) and 2008 Suruga Bay (M6.5) earthquakes, which yield no significant tidal response changes. We examined the amount of dynamic and static stress changes caused by these earthquakes and show that it is difficult to attribute the permeability enhancement solely to dynamic stress, and static stress change may also affect the permeability enhancement. © 2015 The Authors. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84925197884&doi=10.1002%2f2014GL062792&partnerID=40&md5=cd8ae588e5f60e2fd2ec61b0c9933de0
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8600
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: Disaster Prevention Research Institute, Kyoto University, Kyoto, Japan
Recommended Citation:
Kinoshita C.,Kano Y.,Ito H.. Shallow crustal permeability enhancement in central Japan due to the 2011 Tohoku earthquake[J]. Geophysical Research Letters,2015-01-01,42(3).