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Japan-China Cooperative Research for Earthquake Prediction

日中地震预报合作研究

基本信息

批准号：
02044036
负责人：
MATSUDA Tokihiko
金额：
$ 1.28万
依托单位：
Earthquake Research Institute, University of Tokyo
依托单位国家：
日本
项目类别：
Grant-in-Aid for international Scientific Research
财政年份：
1990
资助国家：
日本
起止时间：
1990 至无数据
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-02044036/
关键词：
Seismic microzoning Microtremor of ground Crustal movement Seismic activity Crustal structures GPS Active structures Neotectonics

项目摘要

Present Japan-China cooperative research on earthquake prediction was undertaken in four areas as listed below, following the first three-year cooperative project that began in 1987 and ended in 1989. The cooperative research was for one year only, and the major outcomes are summarized below.(1) Seismic Microzoning in the Tanshang AreaMicrotremor measurements in the Tangashan district of district of P. R. China have revealed that the microtremors reflect the characteristics of the ground motion recognized during the Tangshan earthquake. The microtremor measurements are thus a simple and practical tool for seismic microzonation.(2) Comparative Study by Watertube Tiltmeter of Different TypesInstitute of Seismology, State Seismological Bureau, is in charge of continuous crustal movements in P. R. China, using FSQ-type watertube tiltmeter developed in China. Earthquake Research Institute, University of Tokyo recently developed a now watertube tiltmeter called "ERI '90 type". In order to im … More prove the reliability of data, comparative study of crustal tile by using these two types of tiltmeters has been carried out at Yichang station located in central part of China. The results are encouraging so far, and the joint measurements will be continued in the future.(3) Seismicity and Crustal Structures in Weihe BasinContinuous observations of microseismicity in the Weiha Basin over the period of three years, have revealed that the seismic activity in the basin is very low except for the observational point in Tongchuan where the microseismic activity, with S-P interval less than 1 to several seconds, is slightly higher than in the neighbouring areas. The microtremor measurements in the Basin suggest that the crustal structures in China and Japan are different.(4) Active Structures and Neotectonics in Shang Xi Seismic ZoneShang Xi Seismic Zone was seismologically very active in the 16th to 17th centuries. Cooperative field work on the active structures and Quaternary structures has revealed that a sequence of normal faults are developed well in the field, despite that strike-slip type earthquakes occur in the area. The Daton volcanic group in Shang Xi Grabens ceised its activity more than 100,000 years ago, and the stress field in the area might have changed fairly recently. Less

目前中日地震预报合作研究，继1987年开始至1989年结束的第一个为期三年的合作项目之后，主要在以下四个领域进行。合作研究仅为期一年，主要成果概述如下：（1）潭上地区地震微区划中华人民共和国坦噶山地区的微动测量揭示了微震反映了唐山地震期间识别的地面运动特征。因此，微震测量是一种简单实用的地震微区划工具。(2)不同类型水管倾斜仪的比较研究国家地震局地震研究所负责中华人民共和国的连续地壳运动，使用的是中国研制的FSQ型水管倾斜仪。东京大学地震研究所最近开发了一种名为“ERI'90型”的水管倾斜计。为了进一步证明数据的可靠性，利用这两种倾斜仪在位于中国中部的宜昌站进行了地壳瓦片的对比研究。目前成果令人鼓舞，今后将继续开展联合测量。 (3)渭河盆地地震活动与地壳结构通过对渭哈盆地微震活动三年的连续观测，发现除铜川观测点S-P间隔小于1秒至数秒的微震活动略高外，该盆地的地震活动性很低。比邻近地区。盆地的微震测量表明中国和日本的地壳结构是不同的。(4)上西地震带的活动构造和新构造运动上西地震带在16至17世纪地震非常活跃。对活动构造和第四纪构造的合作野外工作表明，尽管该地区发生了走滑型地震，但该地区仍发育良好的一系列正断层。上西地堑的大顿火山群在十万多年前就停止了活动，该地区的应力场可能在最近才发生了变化。较少的