大同—阳高震群地电阻率异常特征及短临预报  

FEATURES OF EARTH RESISTIVITY ANOMALIES BEFORE DATONG-YANGGAO SWARM AND SHORT-IMPENDING PREDICTION

作　　者：汪志亮[1] 余素荣[1] 

机构地区：[1]国家地震局分析预报中心

出　　处：《地震》1990年第4期11-19,共9页Earthquake

摘　　要：本文研究了大同-阳高6.1级震中500公里范围内22个地电台站。震前只有4个地电台站观测到地电阻率异常,占总台数18.2％。由于这些异常台站的位置分布比较散,短临前兆异常又不明显,震前很难给出明确的短临预报意见,但震前必竟观测到了一些有意义的前兆现象。再次证明地电阻率方法作为地震预报前兆手段的重要性。This paper studies the data recorded at 22 geoelectric stations within the range of 500 km prior to the Datong-Yanggao Ms 6.1 earthquake. Only four geoelectric stations, e.i. 18.2% of the whole observed abnormal variations of earth resistivity before the earthquake. Due to the di-spersion of the positional distribution of the anomalous stations and unclearness of the short-impending precursory anomalies, it had been very difficult to give precise opinions on short-impending prediction before the event. However, some singificant precursory phenomena were observed after all before the shock. This again proves the importance of the earth-resistivity method as a precursory means for earthquake prediction.

关 键 词：震群 地电阻率 地震 预报 

分 类 号：P315.7[天文地球—地震学]