怀4井水汞短临预测指标研究  

Study on Short-term and Imminent Prediction Index of Water Mercury in Huai-4 Well

作　　者：唐杰 张素欣[1] 张子广[1] 盛艳蕊[1] 丁志华[1] TANG Jie;ZHANG Su-xin;ZHANG Zi-guang;SHENG Yan-rui;DING Zhi-hua(Hebei Earthquake Agency, Shijiazhuang, Hebei 050021, China)

机构地区：[1]河北省地震局,河北石家庄050021

出　　处：《山西地震》2021年第3期13-17,共5页Earthquake Research in Shanxi

摘　　要：通过对2009年以来怀4井水汞观测数据的分析,选取周边300 km范围内ML4.0以上地震,对该井水汞的映震效能进行评价与研究。结果表明,该井水汞背景值稳定,无明显的年变动态,异常形态表现为单点或多点突跳,以中短期异常为主。异常对张渤带西段地震具有较好的对应率,对东段地震对应率则较低。研究成果可为张渤带地震危险性判定提供一定的依据。By analyzing the water mercury observation data in Huai-4 well since 2009,earthquakes above ML4.0 within 300km around are selected to evaluate and study the seismic reflection efficiency of water mercury in the well.The results show that the background value of mercury in the well water is stable,there is no obvious annual variation,and the abnormal form is single point or multi-point sudden jump,mainly medium and short-term anomalies.The anomaly has a good corresponding rate to the earthquakes in the west section of The Zhangjiakou-Bohai seismic belt,while the corresponding rate to the earthquakes in the east section is low.The research results can provide a certain basis for the determination of seismic risk in The Zhangjiakou-Bohai seismic belt.

关 键 词：映震效能 水汞观测 异常特征 怀4井 

分 类 号：P315.724[天文地球—地震学]