DOI: 10.1002/grl.50590
论文题名: Rapid modeling of the 2011 Mw 9.0 Tohoku-oki earthquake with seismogeodesy
作者: Melgar D. ; Crowell B.W. ; Bock Y. ; Haase J.S.
刊名: Geophysical Research Letters
ISSN: 0094-8849
EISSN: 1944-8580
出版年: 2013
卷: 40, 期: 12 起始页码: 2963
结束页码: 2968
语种: 英语
英文关键词: CMT
; rapid response
; real time GPS
; seismogeodesy
; source model
; Tohoku-oki earthquake
Scopus关键词: CMT
; Rapid response
; Real-time GPS
; seismogeodesy
; Source models
; Tohoku-Oki earthquakes
; Accelerometers
; Fault slips
; Earthquakes
; accelerometer
; coseismic process
; deformation
; displacement
; geodesy
; GPS
; moment tensor
; real time
; seismic method
; strong motion
; Tohoku earthquake 2011
; waveform analysis
英文摘要: Rapid characterization of finite fault geometry and slip for large earthquakes is important for mitigation of seismic and tsunamigenic hazards. Saturation of near-source weak motion and problematic integration of strong-motion data into displacements make this difficult in real time. Combining GPS and accelerometer data to estimate seismogeodetic displacement waveforms overcomes these limitations by providing mm-level three-dimensional accuracy and improved estimation of coseismic deformation compared to GPS-only methods. We leverage collocated GPS and accelerometer data from the 2011 Mw 9.0 Tohoku-oki, Japan earthquake by replaying them in simulated real-time mode. Using a novel approach to account for fault finiteness, we generate an accurate centroid moment tensor solution independently of any constraint on the slab geometry followed by a finite fault slip model. The replay of GPS and seismic data demonstrates that robust models could have been made available within 3 min of earthquake initiation. Key Points Rapid earthquake source models can be significantly improved with seismogeodesy A line-source CMT solution for finite fault slip can be rapidly estimated Significant improvements with seismogeodesy compared to GPS and seismic methods ©2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84880545177&doi=10.1002%2fgrl.50590&partnerID=40&md5=dbe937ed0178e7d30443fca622fcb819
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/6113
Appears in Collections: 气候减缓与适应
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作者单位: Cecil H. and Ida M. Green Institute of Geophysics and Planetary Physics, Scripps Institution of Oceanography, University of California, San Diego, CA, United States
Recommended Citation:
Melgar D.,Crowell B.W.,Bock Y.,et al. Rapid modeling of the 2011 Mw 9.0 Tohoku-oki earthquake with seismogeodesy[J]. Geophysical Research Letters,2013-01-01,40(12).