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Assessment of Seismic Local-Site Effedcts at Plural Test Sites

多个试验场地的地震局部影响评估

基本信息

批准号：
11694134
负责人：
KUDO Kazuyoshi
金额：
$ 4.22万
依托单位：
THE UNIVERSITY OF TOKYO
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
1999
资助国家：
日本
起止时间：
1999 至 2001
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-11694134/
关键词：
Strong Motion Prediction Site Effects International Test Sites Underground Structure Array Observation of Microtremors Earthquake Hazard Dense Array Observation of Earthquake Observation Simulation of Seismic Motion 地震動局地的影響微動アレー観測 /

项目摘要

This project concentrated to validate and discriminate the site effects on seismic motion that are inevitable for quantitative prediction of strong ground motion. The individual research projects were to develop a method for determining velocity structure, analyze the amplification (or de-amplification) factors and simulate seismic motion numerically. To determine S-wave velocity structure is generally far difficult compared with the P-wave prospecting : However, the surface wave Inversion using array analysis of microtremors, mostly developed in Japan, has great advantages than the current prospecting methods, especially in conducting at urban areas or sedimentary basins. It is very good opportunity to test the method at Euro-Seistest, because there exist lots of data to compare. During this project, the Turkey earthquake occurred and we introduce the method to understand the reason of localized damage distribution. We carried out the experiment at Grenoble basin where many seismological experiments and analysis have also been conducted. A small symposium was held in January 2002, to discuss and integrate the results, inviting the four distinguished 'researchers from oversea, (USA, France, Turkey, and Taiwan). Through this project, we could confirm an advantage of the study that simultaneously conduct geotechnical surveys and dense observation of earthquakes for site characterizations |n future work of predicting strong ground motion.

本项目的重点是验证和区分强地震动定量预测中不可避免的场地地震运动效应。个别研究项目是开发一种确定速度结构的方法，分析放大（或去放大）因素，并数值模拟地震运动。与纵波勘探相比，确定横波速度结构通常要困难得多，而日本主要开发的微震阵列面波反演方法，在城市地区或沉积盆地的勘探中具有很大的优势。由于有大量的数据可供比较，因此在欧洲地震测试中对该方法进行测试是一个很好的机会。本项目以土耳其地震为例，介绍了了解局部损伤分布原因的方法。我们在格勒诺布尔盆地进行了实验，那里也进行了许多地震学实验和分析。2002年1月召开了一次小型研讨会，邀请了来自海外（美国、法国、土耳其和台湾）的四位杰出的研究人员讨论和整合研究成果。通过该项目，我们可以在未来的强地震动预测工作中，确认该研究同时进行岩土调查和密集地震观测的优势。