摘要
本文给出地震活动迁移速率bc值预测方法，利用该方法对1972年以来发生在中国大陆及邻区47次M≥6级地震前区域地震活动进行了计算，其结果为：地震活动迁移率bc值在47次大震前出现明显的低值异常。为了检验该方法是否具有实用性，文中对中国西部5个不同区域进行试算，得出在5个不同区域内发生的约39次地震前，bc值表现不同程度的异常特点。
This paper gives a prediction method of BC value of earthquake activity magration rate. Making use of above method, the authors calculate BC value of fourly seven M>=6. 0 earthquakes which have taken place in China's Mainland and its neighboring area. Study results show abvious lower BC value anomaly before large earthquakes. Furthermore, this paper analyses the characteristics of BC value in five different study areas of west China in order to test this method. The authors think the changes of lower BC value anomaly before large earthquake is a very effective earthquake prediction method.
出处
《华北地震科学》
1998年第2期45-52,共8页
North China Earthquake Sciences
基金
国家地震局"九五"攻关课题!95-04-06-02
关键词
地震活动性
断裂构造
迁移速率
bc值
earthquake activity
rupture length
magration rate
earthquake anomaly.
