摘要
在对五大连池地震台１９８３年以来观测到的五大连池火山区的地震记录复核的基础上，测定了火山构造地震的空间分布状态。研究结果表明该地区地震活动均为壳内地震。受火山构造环境影响，地震活动存在着外围边缘强，震源深度分布深；内部弱，震源深度分布浅的差异。火山区内部地震深度分布优势在５ｋｍ—８ｋｍ，有３个地震分布密集区，震中分布呈明显的沿火山构造断层成带分布特性。在地震条带交汇处，震源深度起伏变化大。
The distribution of tectonic earthquake in Wudalianchi volcanic area has been given on the basis of checking earthquake recorder since 1983.The result shows that all shocks in this area are belong to intracrust earthquake.Volcanic tectonic environment has influence on seismicity in the area.Seismic activity of the periphery of the volcanic area is more strong than interior.The focal depth of volcanic area is more shallow than outer,and depth distribution is from 5km to 8km.There exist three dense regions of epicenter.The epicenter distribution obviously show belt form along volcanic tectonic fault.
出处
《东北地震研究》
1996年第4期17-22,共6页
Seismological Research of Northeast China
关键词
火山构造
火山地震
震源深度
地震活动特征
五大连池
Volcanic structure
Volcanic earthquake
Focal depth
Earthquake activity
Wudalianchi area
