Local amplification of storm surge by Super Typhoon Haiyan in Leyte Gulf.
Local amplification of storm surge by Super Typhoon Haiyan in Leyte Gulf.
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DOI：
10.1002/2014gl060689
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发表时间：
2014-07-28
影响因子：
5.2
通讯作者：
Yasuda, Tomohiro
中科院分区：
文献类型：
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作者：
Mori, Nobuhito;Kato, Masaya;Kim, Sooyoul;Mase, Hajime;Shibutani, Yoko;Takemi, Tetsuya;Tsuboki, Kazuhisa;Yasuda, Tomohiro
2013年11月袭击菲律宾的台风“海燕”是一种极强烈的热带气旋，造成了灾难性的影响。台风海燕的最低中心气压为895 hPa，是在北太平洋西部主要岛屿登陆的最强台风。利用数值天气预报模式和风暴潮模式对台风海燕及其风暴潮特征进行了数值模拟。根据最佳后预报结果分析，本次风暴潮水位为5 ~ 6 m， Leyte湾内因淤塞引起的局部水面高程放大显著。数值实验表明，由于莱特湾和菲律宾海沟的特殊水深特征，风暴潮剖面具有相干结构，是造成塔克洛班灾难的主要原因。数值结果也表明了风暴潮预报的敏感性。
Typhoon Haiyan, which struck the Philippines in November 2013, was an extremely intense tropical cyclone that had a catastrophic impact. The minimum central pressure of Typhoon Haiyan was 895 hPa, making it the strongest typhoon to make landfall on a major island in the western North Pacific Ocean. The characteristics of Typhoon Haiyan and its related storm surge are estimated by numerical experiments using numerical weather prediction models and a storm surge model. Based on the analysis of best hindcast results, the storm surge level was 5–6 m and local amplification of water surface elevation due to seiche was found to be significant inside Leyte Gulf. The numerical experiments show the coherent structure of the storm surge profile due to the specific bathymetry of Leyte Gulf and the Philippines Trench as a major contributor to the disaster in Tacloban. The numerical results also indicated the sensitivity of storm surge forecast.