论文部分内容阅读
北京时间2010年2月27日14时34分智利中部近岸发生里氏8.8级强烈地震,随后环太平洋的数十个国家和地区陆续监测到了强震引发的越洋海啸.28日16时20分起,海啸波在穿越整个太平洋后进入我国东南沿海,中国海洋监测网实时记录了此次越洋海啸大范围影响我国的全过程,这也是我国首次仪器记录的越洋海啸.在详细分析受海啸影响岸段潮位站资料的基础上,划分了越洋海啸对我国东南沿海不同岸段的潜在威胁等级,指出台湾省东部、浙江省及福建省北部沿岸最易受越洋海啸影响.此外,采用波谱分析和小波分析方法对潮位资料分析发现在特殊岸形下,海啸初波极易激发局地“假潮”振荡,两者叠加往往使得海啸波高进一步增大.
Beijing time at 2:34 on February 27, 2010 Chile Richter 8.8 magnitude earthquake near the coast, followed by the Pacific Rim in dozens of countries and regions have been monitoring the strong tsunami triggered by the earthquake on the 28th 16 20 As the tsunami waves entered the southeast coast of our country after crossing the entire Pacific Ocean, China Ocean Monitoring Network recorded in real time the entire process of this large-scale transatlantic tsunami that affected China. This is also the first time that an instrument was recorded in China for transatlantic tsunami. Based on the data of tide stations affected by the tsunami, this paper divides the potential threat levels of the trans-oceanic tsunami to different sections of the southeastern coast of China, pointing out that the coasts of eastern Taiwan, Zhejiang Province and northern Fujian Province are the most vulnerable to trans-oceanic tsunami. In addition, Wave analysis and wavelet analysis of the tide data show that under the special shore-shape, the initial tsunami wave can easily stimulate the local “fallow wave” oscillation, and the superposition of the two often makes the wave height of the tsunami further increase.