DOI: 10.1002/2015GL065868
论文题名: Time reverse imaging for far-field tsunami forecasting: 2011 Tohoku earthquake case study
作者: Hossen M.J. ; Cummins P.R. ; Dettmer J. ; Baba T.
刊名: Geophysical Research Letters
ISSN: 0094-8437
EISSN: 1944-8168
出版年: 2015
卷: 42, 期: 22 起始页码: 9906
结束页码: 9915
语种: 英语
英文关键词: time reverse imaging
; tsunami forecasting
; tsunami source estimation
Scopus关键词: Forecasting
; Least squares approximations
; Surface measurement
; Surface waters
; 2011 tohoku earthquakes
; Computationally efficient
; Far-field tsunami
; Sea surface displacement
; Source estimation
; Source inversion
; Tsunami forecasting
; Tsunami warning systems
; Tsunamis
; displacement
; estimation method
; imaging method
; kinematics
; prediction
; sea surface
; source parameters
; spatial distribution
; Tohoku earthquake 2011
; tsunami
; waveform analysis
; Japan
英文摘要: This paper describes a new method for forecasting far-field tsunamis by combining aspects of least squares tsunami source inversion (LSQ) with time reverse imaging (TRI). This method has the same source representation as LSQ but uses TRI to estimate initial sea surface displacement. We apply this method to the 2011 Japan tsunami, and the results show that the method produces tsunami waveforms of excellent agreement with observed waveforms at both near- and far-field stations not used in the source estimation. The spatial distribution of cumulative sea surface displacement agrees well with other models obtained in more sophisticated inversions, but resolve source kinematics are not well resolved. The method has potential for application in tsunami warning systems, as it is computationally efficient and can be used to estimate the initial source model by applying precomputed Green's functions in order to provide more accurate and realistic tsunami predictions. Key Points Precise scaling using Green's functions improves time reverse imaging of tsunami source Substantially improved, near-real-time source estimates when precomputed Green's functions exist Excellent ability to predict far-field waveforms for tsunami early warning in real time. © 2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84956937829&doi=10.1002%2f2015GL065868&partnerID=40&md5=6e34a850dc2438c9a8cda245486fd685
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8053
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: Research School of Earth Sciences, Australian National University, Canberra, ACT, Australia
Recommended Citation:
Hossen M.J.,Cummins P.R.,Dettmer J.,et al. Time reverse imaging for far-field tsunami forecasting: 2011 Tohoku earthquake case study[J]. Geophysical Research Letters,2015-01-01,42(22).