摘要
对青海省１９９６年１２月～１９９７年７月发生的４起震群活动的特征进行了研究，对其空间分布图象进行了分析．结果表明，锡铁山震群和大武震群为前兆性震群，龙羊峡震群和茫崖震群为非前兆震群．４起震群在总体上形成ＮＷ向条带．根据震群的总体特点及地震空区等。
The characteristics of four swarms from Dec.1996 to July 1997 in Qinghai province are studied.The seismicity patterns are analysed.The results show that Xitieshan swarm and Dawu swarm are precursory swarms,and Longyangxia swarm and Mangya swarm are un precursory swarms.Distribution of the swarms and two earthquakes constitutes a NW belt in the spacial distribution.Based on the total characteristics of swarms and seismic gap and so on,the seismic trend in recent time of Qinghai province is preliminarily discussed.
出处
《西北地震学报》
CSCD
1999年第1期67-71,共5页
Northwestern Seismological Journal
关键词
青海
地震群
地震活动性
地震趋势预测
Qinghai
Seismic swarm
Seismic activity
Seismic trend prediction
