DOI: 10.1002/2016GL069428
论文题名: Spatial variations in fault friction related to lithology from rupture and afterslip of the 2014 South Napa, California, earthquake
作者: Floyd M.A. ; Walters R.J. ; Elliott J.R. ; Funning G.J. ; Svarc J.L. ; Murray J.R. ; Hooper A.J. ; Larsen Y. ; Marinkovic P. ; Bürgmann R. ; Johanson I.A. ; Wright T.J.
刊名: Geophysical Research Letters
ISSN: 0094-8922
EISSN: 1944-8653
出版年: 2016
卷: 43, 期: 13 起始页码: 6808
结束页码: 6816
语种: 英语
英文关键词: earthquake
; fault
; GPS
; InSAR
; inversion
; lithology
Scopus关键词: Earthquakes
; Fault slips
; Friction
; Geodetic satellites
; Geophysics
; Global positioning system
; Lithology
; Synthetic aperture radar
; Fault friction
; Frictional properties
; High resolution observations
; InSAR
; Inversion
; Space and time
; Spatial variations
; Surface displacement
; Faulting
; data set
; earthquake
; earthquake event
; earthquake rupture
; fault displacement
; fault slip
; GPS
; heterogeneity
; inversion tectonics
; lithology
; spatial variation
; synthetic aperture radar
; California
; Napa Valley
; United States
英文摘要: Following earthquakes, faults are often observed to continue slipping aseismically. It has been proposed that this afterslip occurs on parts of the fault with rate-strengthening friction that are stressed by the main shock, but our understanding has been limited by a lack of immediate, high-resolution observations. Here we show that the behavior of afterslip following the 2014 South Napa earthquake in California varied over distances of only a few kilometers. This variability cannot be explained by coseismic stress changes alone. We present daily positions from continuous and survey GPS sites that we remeasured within 12 h of the main shock and surface displacements from the new Sentinel-1 radar mission. This unique geodetic data set constrains the distribution and evolution of coseismic and postseismic fault slip with exceptional resolution in space and time. We suggest that the observed heterogeneity in behavior is caused by lithological controls on the frictional properties of the fault plane. ©2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84978100449&doi=10.1002%2f2016GL069428&partnerID=40&md5=c5caca88353092dd854a45068d865212
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9885
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: Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA, United States
Recommended Citation:
Floyd M.A.,Walters R.J.,Elliott J.R.,et al. Spatial variations in fault friction related to lithology from rupture and afterslip of the 2014 South Napa, California, earthquake[J]. Geophysical Research Letters,2016-01-01,43(13).