摘要
本文利用山东、江苏省地震台网的资料，对苍山５２级地震前沂沭带南段地震活动性参数的变化特征进行了分析研究。发现苍山５２级地震前沂沭带南段３、４级地震活动增强，应变能释放速率加速，地震波速比的时空变化，震前出现明显的低值异常时段和低值异常区。
Using the data from the networks in Shangdong and Jiansu Provinces, the variation characteristics of seimicity parameters in the south segment of the Yume fracture zone before the M5 2 Changshan earthquake are analyzed in this paper. The anomalous variations before the earthquake including M3 4 seismicity increase, increase of release rate of strain energy and time-space variation in Vp/Vs ratio were found and on these grouds, the prediction opinion was put forward before the earthquake.
出处
《地震研究》
CSCD
北大核心
1999年第1期42-46,共5页
Journal of Seismological Research
基金
中国地震局九五攻关课题
关键词
苍山地震
迁移规律
波速比
沂沭断裂带
地震前兆
The Changshan earthquake, migration law, Vp/Vs ratio and the Yimu fracture zone.
