System Development for Prompt Estimation and Updating of Seismic Intensity Map in the High-Precision and Density in the aftermach of Earthquake Occurrence

对于一个有效的地震发生后的第一个救援框架，相关地区的地震灾害信息是必不可少的。开发具有可更新功能的地震灾害分布估计系统具有重要意义。本研究项目旨在开发基于气象台台站地震烈度和相关地区土壤剖面数据库的详细地震烈度快速估算系统。本研究项目的主要成果可以总结如下。(1)东海地区土壤剖面数据库建设。建立了东海地区6个县的地表地质土壤剖面模型。剖面模型在6个县分配到大约17万网格，这些网格均匀分布（约500米× 500米）。(2)详细地震烈度图的快速估计系统。对短周期强震预报技术和利用强震记录反演断裂面粗度分布技术进行了系统的研究。在此基础上，开发了详细地震烈度图的快速估计系统。(3)液化势图估算技术开发了估算相关区域液化势分布的系统。讨论了地震动持续时间对液化的影响，并将结果创新到系统中。

For a validated first framework of rescue just after the earthquake occurrence, the information on seismic disaster over the concerned area is indispensable. The development of the estimation system which includes the renewable function for seismic disaster distribution is especially significant. This research project is aimed to develop the prompt estimation system for a detailed seismic intensity map on the basis of the JMA seismic intensity of the observation stations as well as the soil profile database over the concerned area.Major results of the research project may be summarized as in the following.(1) Development of the database for soil profiles for Tokai regionThe soil profile models of surface geology for 6 prefectures in Tokai region has been organized. The profile models are allocated to about 170,000 meshes which are equally spaced (about 500m x 500m) in 6 prefectures.(2) Prompt estimation system for detailed seismic intensity mapThe prediction technique for short-period strong motion and the inversion technique of asperity distribution on fault plane using the strong motion records have been systemaized. On the basis of these techniques, the prompt estimation system for detailed seismic intensity map has been developed.(3) Estimation technique of liquefation potential mapThe system which can estimate the liquefaction potential distribution for concerned area has been developed. The effect of ground motion duration on the liquefaction has been discussed, and the results were innovated into the system.