科研之友
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摘要
The M-w = 9.0 megathrust earthquake rocked off the northeast coast of Honshu Japan (38.3 degrees N, 142.4 degrees E) on March 11, 2011 at 13 46 Beijing time, which was the most strong earthquake for the past 1200 years in Japan history. A teletsunami was triggered by the huge earthquake and then propagated across the entire Pacific in less than 23 hrs. Tsunami waves were subsequently recorded by a large number of tide gauges throughout the Pacific Ocean and Deep-ocean Assessment and Reporting of Tsunami (DART) buoys in the Pacific Ocean. Tsunami not only caused tremendous damage to the northeast coast of Japan, but also impacted a certain extent of of some nations and regions which are located on the east Pacific Coast. The initial tsunami wave arrived in the east coast of Taiwan 4 hours later and the southeast coast of Mainland China about 6 similar to 8 hours later. The first Tsunami Warning (Phase: Blue) was issued for the event in China. The aim of the present work is to simulate the tsunami generating, propagating throughout the Pacific Ocean, to attain the tsunami energy spatial distribution in the Pacific region and China offshore. We mainly focus on tsunami wave propagation scenarios around Japan and China coastal areas. The simulation results fit well with the observational data. Impact of this event on China coasts was represented quantitatively based on the simulation results and also evaluation of potential risk from Honshu Japan tsunami was implemented.
- 出版日期2012-9
- 单位国家海洋环境预报中心
