DOI: 10.1002/2016GL069841
论文题名: Comparison of coseismic near-field and off-fault surface deformation patterns of the 1992 Mw 7.3 Landers and 1999 Mw 7.1 Hector Mine earthquakes: Implications for controls on the distribution of surface strain
作者: Milliner C.W.D. ; Dolan J.F. ; Hollingsworth J. ; Leprince S. ; Ayoub F.
刊名: Geophysical Research Letters
ISSN: 0094-8518
EISSN: 1944-8249
出版年: 2016
卷: 43, 期: 19 起始页码: 10115
结束页码: 10124
语种: 英语
英文关键词: coseismic
; COSI-Corr
; Hector Mine
; Landers
; off-fault deformation
; optical correlation
Scopus关键词: Deformation
; Earthquakes
; Geophysics
; Lithology
; Optical correlation
; Planetary landers
; Coseismic
; COSI-Corr
; Distributed deformation
; Inelastic deformation
; Probabilistic seismic hazard analysis
; Subpixel correlation
; Surface displacement
; Unconsolidated sediment
; Faulting
英文摘要: Subpixel correlation of preevent and postevent air photos reveal the complete near-field, horizontal surface deformation patterns of the 1992 Mw 7.3 Landers and 1999 Mw 7.1 Hector Mine ruptures. Total surface displacement values for both earthquakes are systematically larger than “on-fault” displacements from geologic field surveys, indicating significant distributed, inelastic deformation occurred along these ruptures. Comparison of these two data sets shows that 46 ± 10% and 39 ± 22% of the total surface deformation were distributed over fault zones averaging 154 m and 121 m in width for the Landers and Hector Mine events, respectively. Spatial variations of distributed deformation along both ruptures show correlations with the type of near-surface lithology and degree of fault complexity; larger amounts of distributed shear occur where the rupture propagated through loose unconsolidated sediments and areas of more complex fault structure. These results have basic implications for geologic-geodetic rate comparisons and probabilistic seismic hazard analysis. ©2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84991093531&doi=10.1002%2f2016GL069841&partnerID=40&md5=fe14de13d513e33a919c75636c62e37c
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9481
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 Sciences, University of Southern California, Los Angeles, CA, United States
Recommended Citation:
Milliner C.W.D.,Dolan J.F.,Hollingsworth J.,et al. Comparison of coseismic near-field and off-fault surface deformation patterns of the 1992 Mw 7.3 Landers and 1999 Mw 7.1 Hector Mine earthquakes: Implications for controls on the distribution of surface strain[J]. Geophysical Research Letters,2016-01-01,43(19).