DOI: 10.1002/2015GL063686
论文题名: Coseismic and postseismic deformation due to the 2007 M5.5 Ghazaband fault earthquake, Balochistan, Pakistan
作者: Fattahi H. ; Amelung F. ; Chaussard E. ; Wdowinski S.
刊名: Geophysical Research Letters
ISSN: 0094-9495
EISSN: 1944-9226
出版年: 2015
卷: 42, 期: 9 起始页码: 3305
结束页码: 3312
语种: 英语
英文关键词: coseismic
; earthquake
; Ghazaband fault
; InSAR
; postseismic
Scopus关键词: Deformation
; Faulting
; Seismology
; Strike-slip faults
; Synthetic aperture radar
; Time series analysis
; Coseismic
; InSAR
; Interferometric synthetic aperture radars
; Postseismic
; Postseismic deformation
; Seismic-moment release
; Surface deformation
; Surface displacement
; Earthquakes
; coseismic process
; deformation
; displacement
; earthquake event
; fault slip
; synthetic aperture radar
; time series
; Baluchistan
; Pakistan
英文摘要: Time series analysis of interferometric synthetic aperture radar data reveals coseismic and postseismic surface displacements associated with the 2007 M5.5 earthquake along the southern Ghazaband fault, a major but little studied fault in Pakistan. Modeling indicates that the coseismic surface deformation was caused by ∼9cm of strike-slip displacement along a shallow subvertical fault. The earthquake was followed by at least 1year of afterslip, releasing ∼70% of the moment of the main event, equivalent to a M5.4 earthquake. This high aseismic relative to the seismic moment release is consistent with previous observations for moderate earthquakes (M<6) and suggests that smaller earthquakes are associated with a higher aseismic relative to seismic moment release than larger earthquakes. Key Points Seismic and aseismic slips on the southern end of the Ghazaband fault At least 1 year of afterslip with 70% of the coseismic moment release Smaller earthquakes have a higher aseismic relative to seismic moment release ©2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84930479557&doi=10.1002%2f2015GL063686&partnerID=40&md5=4c0877d7127fc6a62ae223e5fa2c98ec
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9110
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: Rosenstiel School of Marine and Atmospheric Science, University of Miami, Miami, FL, United States
Recommended Citation:
Fattahi H.,Amelung F.,Chaussard E.,et al. Coseismic and postseismic deformation due to the 2007 M5.5 Ghazaband fault earthquake, Balochistan, Pakistan[J]. Geophysical Research Letters,2015-01-01,42(9).