基于全球海洋模型GOCTM的海啸传播过程数值模拟——以2004印尼大海啸为例

褚芹芹; 于华明; 鲍献文

doi:10.3969/j.issn.0253-4193.2013.03.005

基于全球海洋模型GOCTM的海啸传播过程数值模拟——以2004印尼大海啸为例

doi: 10.3969/j.issn.0253-4193.2013.03.005

1.
国家海洋局秦皇岛海洋环境监测中心站, 河北秦皇岛 066002
2.
中国海洋大学海洋环境学院, 山东青岛 266100

基金项目: 全球海洋环境数值预报关键技术系统集成研究及应用(2011BAC03B02);福建沙埕港八尺门万千瓦级潮汐电站站址勘查及工程预可研(GHME2011ZC03); 国家科技支撑计划(2011BAC03B02);山东省自然科学基金(ZR2012DQ008);教育部博士点专项基金(20120132120016)

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出版历程
- 收稿日期: 2012-01-16
- 修回日期: 2012-12-21

The tsunami propagation numerical modeling based on global ocean model GOCTM——Indonesia tsunami on 26 December 2004

1.
Qinhuangdao Marine Environmental Central Station of State Oceanic Administration, Qinhuangdao 066002, China
2.
Ocean University of China College of Physical and Environmental Oceanography, Shandong Qingdao 266100, China

摘要

摘要: 文中利用在有限体积近海模型FVCOM基础上拓展开发的全球海洋模型GOCTM(Global Ocean Circulation and Tide Model)进行了海啸波传播过程模拟,GOCTM采用全球无结构三角形网格,避免了开边界条件引入带来的误差,利用德国AWI研究所提供的海啸源作为初始水位场,模拟了2004年12月26日苏门答腊-安达曼Mw 9.2地震引发的海啸传播过程。通过模拟结果与印度沿岸潮位站数据以及海啸发生过程观测到的卫星高度计数据进行了对比,发现模拟结果与观测值相近,相关系数最高达0.82,相关性较好。模拟的海啸波到达苏门答腊岛北部的时间与日本的TUNAMI 模型和德国AWI研究所的TsunAWI模型的模拟结果相符,时间相差不到30 min,证明GOCTM全球模型可以较好地对海啸传播过程进行模拟,结果令人满意,希望本工作可以为我国海啸预报和预警提供参考。
- GOCTM /
- 印尼海啸 /
- 海啸传播模型 /
- 数值模拟
Abstract: In this article a tsunami propagation model was built up using the global ocean model GOCTM. This model is based on finite volume discrete method and unstructured triangular Grids. And this is no open boundary condition to be considered. The tsunami event generated by the great Sumatra-Andaman earthquake on 26 December 2004 was simulated with this model. Tsunami source is provided by Alfred Wegener Institute(AWI) in German as the initial surface elevation condition. In order to check the result,we compare model results to tide gauge data from all around the Indian Ocean,to satellite altimetry in selected track. The highest correlation coefficient between model data and tide gauge data is 0.82 proved a good correlation. And the result is satisfactory which prove the GOCTM is suitable to tsunami propagation simulation.
- GOCTM /
- Indonesia tsunami /
- tsunami propagation model /
- numerical modeling

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参考文献(13)

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