Searching tsunami affected area and its visualization by digital earthtechnology

本文提出了一种结合数值模拟、遥感和GIS技术来搜索和检测海啸灾害影响的方法，包括四个方面的工作：1）区域灾害/损害制图工作，以搜索潜在的受影响区域; 2）利用海啸淹没的数值模拟和结构损害的脆弱性函数进行损害估计; 3）利用高分辨率光学卫星图像分析进行当地损害测绘工作，以探测海啸淹没区的范围和结构损害。将该方法应用于近期发生的海啸事件，结合海啸后的调查数据，对淹没区内的结构进行了损伤概率识别。

This study proposes a method to search and detect the impact of tsunami disaster by integrating numerical modeling, remote sensing and GIS technologies, which consist of four damage mapping efforts, 1)Regional hazard/damage mapping effort to search the potential impacted region, 2)Damage estimation effort using the numerical modeling of tsunami inundation and fragility function for structural damage, 3)Local damage mapping effort using the analysis of high-resolution optical satellite imagery to detect the extent of tsunami inundation zone and the structural damage. The method is implemented to the recent tsunami events to identify the structural damage probabilities within the inundation zone, combined with the post-tsunami survey data.