摘要
从郯庐断裂(沈阳—渤海段)地质构造和地球物理场特征出发,借助历史中强震复发周期和地震时空分布特征,对该区强震的危险性做了初步分析。结果表明该区6级和7级地震复发周期分别为18年和95年。目前郯庐断裂沈阳—渤海段接近6.5级地震的复发时段,值得注意地区为NNE向郯庐断裂与NW(或NNW)向断裂的交汇部位以及4级地震活动集中区附近。
Based on the geological structure and geophysical field features of Tan-Lu fault （Shenyang- Bohai section） , a preliminary analysis about strong earthquake risk in the area is made by using the recurrence interval of history medium-strong earthquakes and the characteristics of temporal and spatial distribution. The results showed that M6.0 and M7.0 earthquakes＇recurrence interval in this area was 18 years and 95 years respectively. Now it is close to M6.5 earthquake recurrence period of Tan-Lu fault （Shenyang-Bohai section） .The intersections of NNE direction of and NW direction （or NNW direction） of Tan-Lu fault fractures and ME4.0 seismicity concentration areas should be particularly concerned.
出处
《防灾减灾学报》
2012年第4期1-6,共6页
Journal of Disaster Prevention And Reduction
基金
中国地震局2011年度震情跟踪合同制定向工作任务(2011012101)--"渤海海峡及邻近地区地震危险性综合分析与研究"项目资助
关键词
郯庐断裂
地震活动
复发周期
Tan-Lu Fault
seismicity
recurrence interval
