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Development of a tsunami early warning system for the South China Sea

机译：开发南中国海海啸预警系统

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The Manila subduction zone is identified as one of the most hazardous tsunami source regions, and the countries around the South China Sea are under threat from tsunami hazard. However, the number of early-warning tsunami buoys being deployed in this area is far fewer than that in the Pacific Ocean. This study investigates a feasible approach for establishing a tsunami early warning system in the South China Sea without deploying buoys. The idea is to integrate existing earthquake early warning systems with a fast computing system for estimating tsunami threats. This study presents an efficient and low-cost tsunami fast computing system for early warning. The widely validated tsunami model, COMCOT is chosen as the kernel. The COMCOT source code has been optimized and parallelized in order to meet the requirements of real-time simulation. The optimized model, iCOMCOT performs at least 10 times faster than the original COMCOT. In addition, a flexible and user-friendly grid/cloud-based portal service has been built, which is also made available for mobile devices. As for the automatic generation of the tsunami sources, a new Source-Scaling relationship, which has been validated by recent mega-earthquakes, is implemented. The 2011 Tohoku tsunami is adopted as a case for validation and demonstration. The modelling results of Manila trench, chosen to demonstrate the application of iCOMCOT, show that the western coast of the Philippines is prone to get tsunami attacks. Furthermore, tsunami from the north segment of Manila trench tend to strike southern Taiwan, Hong Kong and Macau area; tsunami from the middle segment, Vietnam. (C) 2015 Elsevier Ltd. All rights reserved.
机译：马尼拉俯冲带被确定为最危险的海啸源地之一，南中国海周围的国家正遭受海啸危害的威胁。但是，在该地区部署的预警海啸浮标的数量远远少于太平洋。这项研究调查了在不部署浮标的情况下在南中国海建立海啸预警系统的可行方法。这个想法是将现有的地震预警系统与用于估计海啸威胁的快速计算系统集成在一起。这项研究提出了一种用于预警的高效低成本海啸快速计算系统。广泛验证的海啸模型COMCOT被选为内核。为了满足实时仿真的要求，对COMCOT源代码进行了优化和并行化。经过优化的模型iCOMCOT的性能至少比原始COMCOT快10倍。此外，还构建了灵活且用户友好的基于网格/云的门户服务，该服务也可用于移动设备。对于海啸源的自动生成，已实施了一种新的“源标度”关系，该关系已得到最近的特大地震的验证。 2011年东北海啸被用作验证和演示的案例。选择用来演示iCOMCOT应用的马尼拉海沟的模拟结果表明，菲律宾西海岸很容易遭受海啸袭击。此外，马尼拉海沟北部的海啸往往袭击台湾南部，香港和澳门地区。越南中部海啸。 （C）2015 Elsevier Ltd.保留所有权利。

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