摘要
本文给出了1990年10月21日磐石大旺地震的震源机制解,探讨了大旺地震的地质构造背景及其发震构造。总结分析了大旺地震前后吉林省中部地区地倾斜观测出现的异常变化及特征,结果表明:异常时间上有阶段性,异常形态上有阶跃、突跳,异常分布与构造有关。
In this paper we give out the mechanism of earthquake focal of Dawang shock
(1990, 10, 21), and research background of geologic structure and seismic tectonic of the
earthquake. The anomaly characteristic of geotilt observations in the middle part of Jilin
Province before and after Dawang shock is analyzed. tiltmeters observation data in middle
The results show that anomaly time is staged, anomaly formation appears in stage leap and
sudden jump, and anomaly distribution is related to structure.
出处
《防灾减灾学报》
1992年第2期89-94,共6页
Journal of Disaster Prevention And Reduction
关键词
发震构造
前兆变化特征
seismic tectonic
precursor characteristic
