DOI: 10.1029/2012GL054209
论文题名: Earthquake source parameters from GPS-measured static displacements with potential for real-time application
作者: O'Toole T.B. ; Valentine A.P. ; Woodhouse J.H.
刊名: Geophysical Research Letters
ISSN: 0094-9400
EISSN: 1944-9131
出版年: 2013
卷: 40, 期: 1 起始页码: 60
结束页码: 65
语种: 英语
Scopus关键词: Centroid-moment tensors
; Earthquake source parameters
; Global positioning system receivers
; Iterative inversion
; Priori information
; Real-time application
; Source mechanisms
; Static displacement
; Global positioning system
; Iterative methods
; Earthquakes
; algorithm
; centroid moment tensor
; displacement
; early warning system
; earthquake engineering
; earthquake magnitude
; GPS
; real time
; seismic source
; Mexico [North America]
英文摘要: We describe a method for determining an optimal centroid-moment tensor solution of an earthquake from a set of static displacements measured using a network of Global Positioning System receivers. Using static displacements observed after the 4 April 2010, MW 7.2 El Mayor-Cucapah, Mexico, earthquake, we perform an iterative inversion to obtain the source mechanism and location, which minimize the least-squares difference between data and synthetics. The efficiency of our algorithm for forward modeling static displacements in a layered elastic medium allows the inversion to be performed in real-time on a single processor without the need for precomputed libraries of excitation kernels; we present simulated real-time results for the El Mayor- Cucapah earthquake. The only a priori information that our inversion scheme needs is a crustal model and approximate source location, so the method proposed here may represent an improvement on existing early warning approaches that rely on foreknowledge of fault locations and geometries. © 2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84874856367&doi=10.1029%2f2012GL054209&partnerID=40&md5=8dfe96260d1e03ba158fc5fc1cbaf1ef
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/6664
Appears in Collections: 气候减缓与适应
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作者单位: Department of Earth Sciences, University of Oxford, Oxford OX1 3AN, United Kingdom
Recommended Citation:
O'Toole T.B.,Valentine A.P.,Woodhouse J.H.. Earthquake source parameters from GPS-measured static displacements with potential for real-time application[J]. Geophysical Research Letters,2013-01-01,40(1).