DOI: 10.1002/2014GL059348
论文题名: Numerical tsunami simulation including elastic loading and seawater density stratification
作者: Allgeyer S. ; Cummins P.
刊名: Geophysical Research Letters
ISSN: 0094-10197
EISSN: 1944-9928
出版年: 2014
卷: 41, 期: 7 起始页码: 2368
结束页码: 2375
语种: 英语
英文关键词: density variation
; elastic loading
; Maule tsunami
; numerical modeling
; Tohoku tsunami
; tsunami
Scopus关键词: Equations of motion
; Numerical models
; Seawater effects
; Tsunamis
; Density stratification
; Density variations
; Linear density
; Loading effects
; Negative phase
; Shallow water equations
; Tsunami simulation
; Tsunami waves
; Loading
; Chile earthquake 2010
; elasticity
; loading
; numerical model
; seawater
; shallow-water equation
; Tohoku earthquake 2011
; travel time
; tsunami
; wave propagation
; waveform analysis
英文摘要: Systemic discrepancies between observed and modeled tsunami wave speeds were previously identified for two recent major tsunamis: the 2010 Maule and 2011 Tohoku events. To account for these discrepancies, we developed a numerical tsunami propagation code solving the shallow water equation and including the effects of elastic loading of the seafloor by the tsunami as well as a linear density profile in the seawater column. We show here that both effects are important to explain the commonly observed difference between observations and simulations. We conclude that the density variation in the seawater column affects the wave speed without changing the waveform, whereas the loading effect has an effect on the wave speed and the waveform showing a negative phase before the main arrival due to the depression of the seafloor surrounding the tsunami wave the combination of both effects is needed to achieve a better match between observations and simulations. Key Points There is a better agreement between observation and modeling The density stratification affects only traveltime The elastic loading affects traveltime and changes the wave form © 2014. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84899043757&doi=10.1002%2f2014GL059348&partnerID=40&md5=5a53e42c0ea064f882a9cfd44b959c1d
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7461
Appears in Collections: 气候减缓与适应
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作者单位: Research School of Earth Sciences, Australian National University, Canberra, ACT, Australia
Recommended Citation:
Allgeyer S.,Cummins P.. Numerical tsunami simulation including elastic loading and seawater density stratification[J]. Geophysical Research Letters,2014-01-01,41(7).