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首页> 外文会议>Congress of Asia and Pacific Division of International Association of Hydraulic Engineering and Research >NUMERICAL SIMULATION OF A TSUNAMI PROPAGATION CONSIDERING THE REGIONAL CHARACTERISTIC
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NUMERICAL SIMULATION OF A TSUNAMI PROPAGATION CONSIDERING THE REGIONAL CHARACTERISTIC

机译：考虑区域特征的海啸传播的数值模拟

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摘要

The tsunami, the representative natural hazard, causes tremendous damage to national economy as well as casualties. For example, the South Asia Tsunami occurred on December 26, 2004 killed approximately 300,000 people and deprived property of 10billion USD. So, it is very important to predict a behavior of a tsunami which depends on a water depth variation and a regional characteristic. The former determines the direction of tsunami propagation and the latter may cause wave reflection and resonance. Therefore, in this study, we investigate an effect of these phenomena. Imwon port located at the eastern coast of the Korean peninsula was damaged relatively strongly by the Central East Sea Tsunami because of a water depth variation which makes the wave concentration on this port. Pohang port is located at a caved point of the eastern coast of the Korean Peninsula, it may have a risk that there are some increases of wave heights by wave reflection and resonance effect. To simulate tsunami propagation, the dispersion-correction scheme which is modified to consider the dispersion effect is used. The modified scheme has an advantage of using constant spatial grid and time step sizes even in real topography. In numerical model, a staggered grid system is used. A total domain of the model is divided several sub-regions and dynamic linking technique is used to connect these.
机译：Tsunami是代表性的自然危害，对国民经济和伤亡造成了巨大的损害。例如，2004年12月26日发生了南亚海啸杀害了约300,000人，剥夺了10亿美元的剥夺财产。因此，预测海啸的行为是非常重要的，这取决于水深变化和区域特征。前者确定海啸传播的方向，后者可能导致波反射和共振。因此，在这项研究中，我们研究了这些现象的效果。由于水深变化，位于韩国半岛东海岸的Imwon港口受到中东海啸的损坏，因为水深变化使得该端口上的波浪集中。浦项港位于朝鲜海岸的东海岸的洞穴点，可能存在波浪射频增加的波浪高度增加的风险。为了模拟Tsunami传播，使用修改以考虑色散效果的色散校正方案。修改方案具有即使在实际地形中使用恒定的空间网格和时间步长。在数值模型中，使用交错网格系统。模型的总域被划分了几个子区域，并且使用动态链接技术来连接这些。

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