JOINT STUDY ON SEISMIC MICROZONATION IN GRANADA BASIN,SPAIN

西班牙格拉纳达盆地地震微分区联合研究

基本信息

批准号：
07044136
负责人：
SEO Kazuoh
金额：
$ 5.63万
依托单位：
TOKYO INSTITUTE OF TECHNOLOGY
依托单位国家：
日本
项目类别：
Grant-in-Aid for international Scientific Research
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

项目摘要

The principal purpose of this joint research project is to present a practical methodology for seimic microzonation in sedimentary plains and basins, where seismic ground motions will be strongly amplified during earthquakes. Then total assessment of seismic risk is being made based on seismic motion observations, seismic surveys and evaluation of dynamic characteristics of existing building structures in the Granada basin and its vicinity. In 1997 as the final year of this project, we made the following research items.1. The Spanish team installed a strong motion network in the Granada basin.2. Seismic surveys for shallower structure in the Granada basin including microtremor measurements were made with the cooperation between the Spanish team and the Japanese team.3. The measurements of natural period and damping coefficient for building structures were carried out also with the cooperation between the Spanish team and the Japanese team.4. Seismic intensity distribution for the 1993 and 1994 damage earthquakes were densely surveyed.5. Seismic risk mapping for the Granada basin is being prepared including several comments and proposals for the fufure earthquake disaster mitigation.In November 1997, the third workshop on Spanish-Japanese Joint Research titled Seismic Microzoning and Risk Assessment in Urban Area was held to discuss and summarize the project. In March 1998, we will open the fourth (the final) workshop in Japan to conclude the project and also to discuss the related research subjects with general audience.

该联合研究项目的主要目的是提出一种沉积平原和盆地地震微区划的实用方法，这些地区的地震地面运动在地震期间会被强烈放大。然后根据地震运动观测、地震调查和格拉纳达盆地及其周边地区现有建筑结构的动力特性评估，对地震风险进行全面评估。 1997年作为该项目的最后一年，我们做了以下研究工作： 1．西班牙团队在格拉纳达盆地安装了强运动网络。2．西班牙团队与日本团队合作，对格拉纳达盆地浅层构造进行了地震勘探，包括微震测量。 3．西班牙团队和日本团队合作也进行了建筑结构自然周期和阻尼系数的测量。 4．密集调查了1993年和1994年破坏性地震的地震烈度分布。 5．格拉纳达盆地的地震风险测绘正在编制中，其中包括对未来地震减灾的若干意见和建议。 1997年11月，召开了第三次西班牙-日本联合研究研讨会，题为城市地区地震微区划和风险评估，进行了讨论和总结该项目。 1998年3月，我们将在日本举办第四次（最后一次）研讨会来结束该项目，并与广大观众讨论相关的研究课题。