| Co-Investigator(Kenkyū-buntansha) |
MA Jin Institute of Geology, State Seismological Bureau, P. R. China, Professor, 地質研究所, 教授
馬 宗晋 中国国家地震局, 地質研究所, 教授
蘭 迎春 中国国家地震局, 地震研究所, 助手
謝 正章 中国西安市国家地震局, 地震局長
呉 器麟 中国国家地震局, 地震研究所, 教授
蔡 惟〓 中国国家地震局, 地震研究所, 助教授
袁 一凡 中国国家地震局, 工程力学研究所, 助教授
TAKEUCHI Akira Faculty of General Education, Toyama University Associate Professor, 教養部, 助教授 (20126494)
OIKE Kazuo Faculty of Science, Kyoto University Professor, 理学部, 教授 (40027248)
SHIMAMOTO Toshihiko Earthquake Research Institute, University of Tokyo Associate Professor, 地震研究所, 助教授 (20112170)
YAMAUCHI Tsuneo Faculty of Science, Nagoya University Assistant, 理学部, 助手 (80022713)
YANAGISAWA Michio Earthquake Research Institute, University of Tokyo Assistant, 地震研究所, 講師 (90012947)
ISHII Hiroshi Earthquake Research Institute, University of Tokyo Professor, 地震研究所, 教授 (30004386)
MATSUNAMI Koji Disaster Prevention Center, Kyoto University Assistant, 防災研究所, 助手 (70027291)
SEO Kazuo The Graduate School at Nagatsuta Tokyo Institute of Technology, Associate Profes, 総合理工学部, 助教授 (30089825)
HAKUNO Motohiko Earthquake Research Institute, University of Tokyo Professor, 地震研究所, 教授 (10016321)
YUAN Yifan Institute of Engineering Mechanics State Seismological Bureau, P. R. China Assoc
MA Zohnjing Institute of Geology, State Seismological Bureau P. R. China, Professor
CAI Weixin Institute of Seismology, State Seismological Bureau, P. R. China, Associate Prof
LAN Yingchun Institute of Seismology, State Seismological Bureau, P. R. China, Research Assoc
XIE Zhengzhang Seismological Bureau of Xian Director
WU Yilin Institute of Seismology, State Seismological Bureau, P. R. China, Professor
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| Research Abstract |
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 Area
Microtremor 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 Types
Institute 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
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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 Basin
Continuous 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 Zone
Shang 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
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