设为首页 | 加入收藏
王培涛,高义,于福江,范婷婷.基于数值模拟的渤海海域地震海啸危险性定量化研究[J].海洋学报,2014,36(1):56-64
基于数值模拟的渤海海域地震海啸危险性定量化研究
Quantitative research on earthquake-generated tsunami hazards based on the numerical simulations in Bohai Sea
投稿时间:2012-02-08  
DOI:10.3969/j.issn.0253-4193.2014.01.007
中文关键词:  渤海地震海啸  数值模拟  四叉树  海啸预警
英文关键词:tsunamis in Bohai Sea  numerical simulation  quadtree  tsunami early warning
基金项目:海洋公益性行业科研专项项目(201205034,201305031)。
作者单位
王培涛 National Marine Environment Forecasting Center, Beijing 100081, China 
高义 Key Laboratory of Research on Marine Hazards Forecasting, National Marine Environmental Forecasting Center, State Oceanic Administration, Beijing 100081, China 
于福江 National Marine Environment Forecasting Center, Beijing 100081, China
Key Laboratory of Research on Marine Hazards Forecasting, National Marine Environmental Forecasting Center, State Oceanic Administration, Beijing 100081, China 
范婷婷 National Marine Environment Forecasting Center, Beijing 100081, China 
摘要点击次数: 3156
全文下载次数: 14715
中文摘要:
      根据地震海啸产生的条件,结合渤海海域的地形特征、地质构造、地震学特征和历史地震及海啸记录对渤海海域潜在的地震海啸进行了数值模拟研究。分析了渤海可能引发地震海啸的震源区域,讨论了渤海发生海啸灾害的可能性。文中通过数值模拟再现了渤海历史上几次规模较大的地震事件可能引发的海啸情景,研究分析了可能的地震海啸在渤海及周边海域的传播过程及波动特征.地震海啸传播模型采用基于四叉树原理的自适应网格加密技术,有效解决了局部分辨率与计算效率之间的矛盾。数值计算包括地震海啸产生及传播过程。利用该模型对渤海潜在的地震海啸进行了数值计算,基于数值计算结果定量阐述了渤海海域潜在地震海啸对渤海局部岸段及北黄海沿岸的影响,给出了渤海可能地震海啸危险性划分;研究结果将为我国海啸危险性分析和海啸预警技术研究工作提供技术支持。
英文摘要:
      A numerical simulation study on potential earthquake-generated tsunami is carried out in the paper for Bohai Sea based on comprehensive consideration of the tsunamigenic conditions, topography feature, geological structure, seismological features and historical records about earthquake and tsunami. Tsunamigenic zones and possibility of tsunami hazards in Bohai Sea were analyzed and discussed respectively. Several local tsunamis were simulated by tsunami numerical model which was triggered by historical subduction earthquakes which have magnitudes larger than Mw7.0 in Bohai Sea. The tsunami model adopted adaptive mesh refinement technology based on Quadtree principle. The contradiction between the local resolution and the computational efficiency was resolved by using adaptive mesh. Numerical computation including seabed deformation,tsunami propagating over deep and shallow water. Potential tsunami induced by a hypothetical earthquake with Mw7.8 was simulated using tsunami numerical model in this paper. Its propagation scenario and wave characteristics were analyzed around Bohai Sea region. The impact of potential tsunami on Bohai Sea coasts and northern Huanghai Sea coasts was discussed quantitatively ground on the numerical calculation result. A preliminary tsunami hazards for Bohai Sea were classified. The study presented in this paper will serve as the technological support to the tsunami hazards analysis and the technology research of tsunami early warning.
查看全文   查看/发表评论  下载PDF阅读器
关闭
微信公共账号