摘要
分析了清水李沟井与礼县石桥井流量变化与邻近地区发生的中强地震的对应关系 .发现在邻近地区发生的部分中强地震前半年左右 2口井的流量开始出现上升或波动现象 ,异常变化的幅度最大可达 3.75mL/s,对震级较小 ,而且距离较远的地震无明显的异常反映 .2口井流量异常对 5级地震的映震范围为 2 50km ,6级地震为350km ,7级地震为 50 0km .
The relation between discharge changes of Ligou well,Qingshui and Shiqiao well,Lixian and mid strong earthquakes in neighboring region is analyzed.It is found that discharges of the two wells rise or undulate about half of year before part of the mid strong earthquakes in the neighboring region,with a maximum anomalous amplitude of 3.75 mL/s.There are no the anomalies of the discharges before the events with smaller magnitude relatively distant from the wells.The reflecting range of the anomalies of the two wells to M S5 events is 250 km,that to M S6 events is 350 km and that to M S7 events is 500 km.
出处
《西北地震学报》
CSCD
北大核心
2001年第3期238-242,共5页
Northwestern Seismological Journal
基金
中国地震局兰州地震研究所论著编号 :LC2 0 0 10 4 9
关键词
甘肃
李沟井
石桥井
流量
映震能力
地下水
地震前兆异常
震级
Gansu
Ligou well
Shiqiao well
Discharge
Anomalous character
Reflecting earthquake ability
