DOI: 10.1002/grl.50625
论文题名: The open ocean energy decay of three recent trans-Pacific tsunamis
作者: Rabinovich A.B. ; Candella R.N. ; Thomson R.E.
刊名: Geophysical Research Letters
ISSN: 0094-8848
EISSN: 1944-8579
出版年: 2013
卷: 40, 期: 12 起始页码: 3157
结束页码: 3162
语种: 英语
英文关键词: 2009 Samoa tsunami
; 2010 Chile tsunami
; 2011 Tohoku tsunami
; energy decay
; Pacific Ocean
Scopus关键词: Energy decay
; Frequency contents
; Frequency-dependent analysis
; High frequency HF
; High resolution
; Pacific ocean
; Source parameters
; Wave properties
; Decay (organic)
; Earthquakes
; Frequency estimation
; Spectrum analysis
; Tsunamis
; catastrophic event
; Chile earthquake 2010
; earthquake event
; earthquake magnitude
; open ocean
; spectral analysis
; Tohoku earthquake 2011
; tsunami
; Pacific Ocean
英文摘要: The 2009 Samoa (Mw 8.1), 2010 Chile (8.8), and 2011 Tohoku (9.0) earthquakes generated destructive tsunamis recorded by a large number of DART stations in the Pacific Ocean. High-resolution (15 s) DART records yield mean energy decay times for these events of 17.3, 24.7, and 24.6 h, respectively. We attribute these differences to the frequency content of the tsunamis. Specifically, the Samoa tsunami was a "high-frequency" event with periods of 2-30 min whereas the Chile and Tohoku tsunamis were "broad-band" events with periods of 2-180 min. Differences in frequency content are linked to differences in the source parameters: Samoa was a relatively small deep-water earthquake while Chile and Tohoku were extensive shallow-water earthquakes. Frequency-dependent analysis of the Chile and Tohoku tsunamis indicates that shorter period waves attenuate much faster than longer-period waves (decay times range from 15 h for 2-6 min waves to 29 h for 60-180 min waves). Key Points Direct estimation of tsunami energy decay based on deep-sea measurements Open-ocean wave properties of three recent catastrophic tsunamis Spectral analysis of the open-ocean tsunami frequencies ©2013. American Geophysical Union. All Rights Reserved.
URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84880526443&doi=10.1002%2fgrl.50625&partnerID=40&md5=91c6bc1709a8f6347b20c1f9ff124ac6
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/6112
Appears in Collections: 气候减缓与适应
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作者单位: P.P. Shirshov Institute of Oceanology, 36 Nakhimovsky Prosp., Moscow, 117997, Russian Federation
Recommended Citation:
Rabinovich A.B.,Candella R.N.,Thomson R.E.. The open ocean energy decay of three recent trans-Pacific tsunamis[J]. Geophysical Research Letters,2013-01-01,40(12).