Research on the potential tsunami hazard in East China Coast under rare earthquake occurred in Nankai Trough,Japan
Wen Yanlin
Zhao Wenzhou
Li Wei
Xue Yan
Yu Haiying
Abstract：Based on the analysis of seismicity in Nankai Trough and historical tsunami records,rare earthquake with MW 9.1 and induced tsunami were studied by numerical simulation.The results show that,the earthquake may cause 10 m tsunami wave initially,and then it propagates to Zhejiang offshore after 6 hours with the wave amplitude getting to 1-2 m;8 hours later the tsunami is near the coastline of Shanghai with the maximum wave amplitude about 2 m;the tsuna-mi propagates to northern Jiangsu coast after 11 hours,and the wave amplitude generally is expected to 1 m.In fact,the tsunami height near the coast is close-ly related to the shoreline and the local bathymetry.Because China has many complex gulfs which can amplify the tsunami waves,our simulating data may less than the real amplitudes of tsunami propagating to the local coast.There-fore our comprehensive assessment of tsunami hazard scale is m =1-2 in East China Coast.Once in the Nankai Trough giant earthquake occurred,induced-tsunami effect can not be ignored in China.Especially if the tsunami combines with a storm tide,it may cause tsunami disaster in East China Coast.
Keywords：Nankai Troughrare earthquaketsunami hazard in East China Coast
Publication Date：2014-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：11( 651-661 )