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Study on Information System of Grand Motions For Earthquake Disaster

地震灾害大动作信息系统研究

基本信息

批准号：
07558058
负责人：
IRIKURA Kojiro
金额：
$ 9.92万
依托单位：
KYOTO UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (A)
财政年份：
1995
资助国家：
日本
起止时间：
1995 至 1997
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07558058/
关键词：
Prediction of Strong Ground Motion Numerical Simulation Underground Structure Model Prediction of liquefaction Strong Motion Network Real Time Seismology Automatic Source Mechanism Determination Internet Home Page リアルタイム地震学液状化震源情報

项目摘要

The purposes of this study are to compile earthquake information and to construct a prototype real-time information system for the mitigation of earthquake disaster. Our results are mainly three parts, improvement of strong motion network, automatic estimation of source and ground motions using strong motion data, and basic studies related to prediction of strong ground motions.(1) We improved instrumentation of seismic strong ground motion network in Kansai area. Maximum values of velocity will be sent almost on real-time and waveforms will be downloaded simultaneously.(2) An automatic source mechanism determination system is developed by using strong motion network data and we also improved this algorithm more robustly by applying strong motion data base.(3) Theoretical, semi-empirical, and empirical prediction methods of strong ground motions of source area are examined using seismic network data. For the seismic early-warning system, we developed a new estimation method of seismic intensity distribution based on the empirical method and real-time waveform data.(4) We summarized researches concerning to the liquefaction conditions and examined the automatic estimation method of ground earthquake disaster using ground motion data, seismic intensity distribution, and GIS information. This method was applied to the past large disaster earthquakes.(5) We demonstrate several ways to open our ground motion information to the public using the internet home page and the internet mail.(6) We made the report of these results and some basic studies concerning to prediction and evaluation of strong ground motions.

本研究的目的是汇编地震信息，并构建一个防震减灾实时信息系统的原型。研究成果主要包括强震台网的改进、利用强震资料自动估计震源和地面运动以及强震预报的相关基础研究。(1)改进了关西地区强震台网的仪器设备。利用强震台网资料开发了震源机制自动判定系统，并应用强震数据库对算法进行了改进。(3)利用地震台网资料对震源区强震的理论、半经验和经验预测方法进行了检验。对于地震预警系统，提出了一种基于经验方法和实时波形数据的地震烈度分布估计方法。(4)总结了液化条件下的研究成果，研究了基于地震动数据、地震烈度分布和地理信息的地面震害自动估计方法。将该方法应用于历次大灾地震。(5)展示了利用互联网主页和互联网邮件向公众开放我们的地震动信息的几种方式。(6)报道了这些结果以及与强震预测和评估有关的一些基础研究。