Preliminary numerical simulation of potential earthquake-induced tsunami in East China Sea

• 作 者: 温燕林 朱元清 宋治平 薛艳 刘双庆 董非非
• 机 构: Earthquake Administration of Shanghai Municipality,Institute of Geophysics,China Earthquake Administ
• 出 处: Acta Seismologica Sinica(English Edition)
• 发表日期: 2008年05期
• 关键词: arrival propagate shore Figure offshore mainland strike historical likely contin

In this paper,we present a numerical simulation of the propagation of a tsunami in the East China Sea,which might be induced by a hypothetical M8.5 earthquake in Okinawa Trough. Our results show that the initial maxi-mum wave height of tsunami could reach as high as 4.3 m for the hypothetical earthquake. It would take 3.5～4 hours for the tsunami to propagate to the coast of Zhejiang Province,and 7～8 hours to the near-shore of Shanghai. The peak tsunami height could be up to about 2 m in the coast of Zhejiang Province. Based on the numerical ex-periments,we plot the arrival time contours of tsunami in East China Sea and time history curves on the three ob-servational stations,and discussed the significance of the pre-analysis.

In this paper, we present a numerical simulation of the propagation of a tsunami in the East China Sea, which might be induced by a hypothetical M8.5 earthquake in Okinawa Trough. Our results show that the initial maxi-mum wave height of tsunami could It would take 3.5 ~ 4 hours for the tsunami to propagate to the coast of Zhejiang Province, and 7 ~ 8 hours to the near-shore of Shanghai. The peak tsunami height could be up to about 2 m in the coast of Zhejiang Province. Based on the numerical ex-periments, we plot the arrival time contours of tsunami in East China Sea and time history curves on the three ob-servital stations, and discussed the significance of the pre -analysis.