Numerical Modeling, Remote Sensing and GIS-based Approach to Identify the Impact of Catastrophic Earthquake Tsunami Disaster

本研究提出一套整合数值模拟、遥感与地理信息系统技术的海啸灾情搜寻与侦测方法，包括四个灾情测绘工作：1)利用数值模拟与卫星遥感进行淹没测绘；2)利用数值模拟与海啸脆弱性曲线评估结构灾情；3)利用航片解译进行结构灾情测绘；4)以灾后影像分析为影响指标，绘制海啸碎片图。在2011年东北地震海啸灾区综合研究的基础上，讨论了对重建和抗海啸社区的见解。这些发现和结果对土地使用管理和重建抗海啸能力强的沿海社区的搬迁规划产生了影响。

This research proposed a framework in developing a method to search and detect the impact of catastrophic tsunami disaster by integrating numerical modeling, remote sensing and GIS technologies, which consist of four damage mapping efforts, 1) Inundation mapping by numerical modeling and satellite remote sensing, 2) Estimation of structural damage with numerical modeling and tsunami fragility curve, 3) Structural damage mapping by aerial photo interpretation, 4) Mapping tsunami debris by post-event image analysis as an indicator of impact.The method is implemented to the 2011 Tohoku earthquake tsunami disaster to identify the regional impact of this event. Based on a comprehensive study in the 2011 Tohoku earthquake tsunami affected areas, the insights into reconstruction and tsunami-resilient communities were discussed. The findings and results lead to implications for land use management and relocation planning for reconstructing tsunami-resilient coastal communities.