it is helpful for judging the emphatic area of medium term earthquake risk by synthetical analysis of seismic activity and the features of precursory anomaly evolution in group.
综合分析中小地震活动和前兆异常群体演化特征,对于判定中期地震危险区是十分重要的。
based on the mechanism to induce groundwater anomaly, the interferences of precursory anomaly and its recognition are discussed, and the view of 「rain and groundwater interference」is questioned.
按照地下水诱发异常的机理,讨论了诱发前兆异常的干扰与识别问题,并对「降水、地下水干扰」观点提出质疑。
all this specific geological conditions provide the foundation to seek for the relation of precursory anomaly in oil well to seismic activity an…
特定的地质环境是油井前兆异常的基础,应力转化为孔隙压力是油井前兆异常的前提。
besides, the relation between development and evolution of earth resistivity anomaly, development of earthquake and occurrence process, as well as the index of precursory anomaly are also studied.
分析和研究地电阻率异常发展、演变特征与地震孕震、发生过程的联系及其前兆异常标志。
the ratio precursory anomaly is 40% for seismology parameter of the epicenter area in 2 years before the main shock.
震前2年左右,震源区附近地震学参数异常比较明显,异常项数比40%;
such a phenomenon has enlightened us on the precursory anomaly of the observed wave characteristics.
这种现象,为观测地震波特性的前兆异常给予了启示。
geothermal precursory anomaly before signal earthquake is similar to the anomalies before main earthquake.
信号震地热前兆异常和主震地热前兆异常相似;
in this paper the observational data of earth resistivity are processed with the methods of first order difference and coherent weight. the short-term precursory anomaly is prominent.
本文用一阶差分和相干加权计算等方法对地电阻率观测资料进行处理,其结果较好地突出了短临前兆异常。
the trace monitoring and comparative analysis of precursory anomaly is of great significance in seismic regime prediction.
前兆异常的跟蹤监测与对比分析,在震情预测中有重要作用。