Cooperative Research: Three-Dimensional Effects of Tsunami Run-up Onto a Coastline

海啸(地震海浪)研究的主要工程问题之一是波浪上升的最后阶段，枯竭和陆上流动--沿海过程可能会对人口稠密的沿海社区造成严重破坏。这些影响通常会因为问题的三维方面而变得复杂，包括对沿海建筑物的影响和在近岸水深测量上的传播；这些长波对此反应强烈。现有的大多数关于海啸抬头的研究主要是二维的：有必要在以下方面取得进展实验和数值技术，以了解海啸孕育的三维特征。这项研究计划是几位研究人员共同努力，通过现代实验的创新组合来研究这一现象技术，数学理论和数值模型。康奈尔大学的刘利伟博士和哈佛大学的卡里尔博士负责理论和数值研究；华盛顿大学的哈里·H·叶博士负责这个小规模的实验项目；南加州大学的Costas E.Synolakis博士和海岸工程研究中心(CERC)的Mike Briggs先生领导一个研究团队在维克斯堡的CERC进行大规模实验，该计划的目标是：(1)为了更好地了解物理现象并确定涉及到的重要物理参数三维海啸抬头；(2)推进三维自由表面流动的数值模拟技术；(3)为实验室实验开发解析和数值解；以及(4)生成实验结果的数据库，以供将来验证不同的数值模型。这项研究计划将促进和加强大学和各种政府机构和实验室的研究人员之间的互动。

One of the primary engineering concerns in tsunami (seismic sea wave) research is the final stage of wave run-up, run-down and overland flows - coastal processes which can cause severe damage in a populated coastal community. These effects are usually complicated by the three-dimensional aspects of the problem, including impact with coastal structures and propagation over the nearshore bathymetry; to which these long waves are highly responsive. Most of the existing research on tsunami run-up is primarily two-dimensional: There is a need to make advances in experimental and numerical techniques so as to understand the three-dimensional features of tsunami run-up. This research program is a coordinated effort among several researchers to investigate this phenomenon through innovative combinations of modern experimental techniques, mathematical theories and numerical models. Dr. Philip L.-F. Liu at Cornell University and Dr. George F. Carrier of Harvard University are responsible for the theoretical and numerical study; Dr. Harry H. Yeh at the University of Washington is in charge of the small-scale experimental program; and Dr. Costas E. Synolakis of the University Southern California and Mr. Mike Briggs of the Coastal Engineering Research Center (CERC) of the U.S. Army Corps of Engineers are leading a research team to carry out the large-scale experiments at CERC in Vicksburg, MS. The goals of the program are: (1) To achieve a better understanding of the physical phenomenon and to identify important physical parameters involved in three-dimensional tsunami run-up; (2) to advance the numerical modeling techniques for simulating three-dimensional free surface flows; (3) to develop analytical and numerical solutions for the laboratory experiments; and (4) to generate a data-base of experimental results for future verification of different numerical models. This research program will facilitate and enhanceinteractions between researchers in universities and various government agencies and laboratories.