香港海啸数值模型发展——以日本3.11海啸为主要案例对模型的验证
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摘要
香港天文台在2012年引进了一套采用平行运算技术的海啸数值模型COrnell Multigrid COupled Tsunami(COMCOT)model,并与香港天文台在2010年初开始运行的地震数据处理及分析系统结合,利用后者探测及分析所得的太平洋或南海地震参数,模拟海啸传播过程和计算海啸在海面上及抵岸时的情况。并用日本311地震所产生的海啸为主要案例,加上过去香港曾经录得的海啸记录,验证COMCOT模拟海啸的能力,讨论COMCOT在香港天文台海啸预警工作上的应用。
HKO adopted a new tsunami model running on parallel computing technology in 2012, the Cornell Multigrid Coupled Tsunami model(COMCOT), and integrated it with the HKO seismic data processing system,Which was operational since early 2010. In the event of an earthquake over the Pacific or the South China Sea,the earthquake parameters detected and analyzed by the system would be fed to the model for simulating tsunami propagation and estimating the tsunami heights over the sea and on arrival at the coasts. This paper studies the performance of COMCOT by using the tsunami heights recorded during the Japan 311 earthquake event as well as past tsunamis recorded in Hong Kong, and discusses the applications of the model in the tsunami warning services of HKO.
HKO adopted a new tsunami model running on parallel computing technology in 2012, the Cornell Multigrid Coupled Tsunami model(COMCOT), and integrated it with the HKO seismic data processing system,Which was operational since early 2010. In the event of an earthquake over the Pacific or the South China Sea,the earthquake parameters detected and analyzed by the system would be fed to the model for simulating tsunami propagation and estimating the tsunami heights over the sea and on arrival at the coasts. This paper studies the performance of COMCOT by using the tsunami heights recorded during the Japan 311 earthquake event as well as past tsunamis recorded in Hong Kong, and discusses the applications of the model in the tsunami warning services of HKO.
引文
[1]Xiaoming Wang.Technical document for COMCOT v.1.7[M].New Zealand:Institute of Geological&Nuclear Science,2009.
[2]Philip L.F.Liu.Seung-Buhm Woo,Yong-Sik Cho.Computer Programs for Tsunami Propagation and Inundation[M].Ithaca,NY:School of Civil and Environmental Engineering Cornell University,1998.
[3]Amante,C.B.W.Eakins,ETOPO1 1 Arc-Minute Global Relief Model:Procedures,Data Sources and Analysis[C].NOAA Technical Memorandum NESDIS NGDC-24,19 pp,March 2009.
[4]Farr,T.G.,M.Kobrick.Shuttle Radar Topography Mission produces a wealth of data[J].Amer.Geophys.Union Eos,2000,81:583-585.
[5]Manshinha,L.,and D.Smylie.The displacement field of inclined faults[J].Bulletin of the Seismological Society of America,1971,61(5):1433-1440.
1黄永德,杨继兴,李健威.香港海啸警报服务的新发展和数值模式的应用.第二届粤港澳地震科技研讨会论文集.中国澳门,2006.
[2]Philip L.F.Liu.Seung-Buhm Woo,Yong-Sik Cho.Computer Programs for Tsunami Propagation and Inundation[M].Ithaca,NY:School of Civil and Environmental Engineering Cornell University,1998.
[3]Amante,C.B.W.Eakins,ETOPO1 1 Arc-Minute Global Relief Model:Procedures,Data Sources and Analysis[C].NOAA Technical Memorandum NESDIS NGDC-24,19 pp,March 2009.
[4]Farr,T.G.,M.Kobrick.Shuttle Radar Topography Mission produces a wealth of data[J].Amer.Geophys.Union Eos,2000,81:583-585.
[5]Manshinha,L.,and D.Smylie.The displacement field of inclined faults[J].Bulletin of the Seismological Society of America,1971,61(5):1433-1440.
1黄永德,杨继兴,李健威.香港海啸警报服务的新发展和数值模式的应用.第二届粤港澳地震科技研讨会论文集.中国澳门,2006.
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