论文部分内容阅读
本文从我国十几年来观测到的地电阻率前兆现象以及自然条件下岩(土)层受压实验结果,提出了地震前地电阻率异常的四种表现特征:异常的形态(上升、下降或反覆的变化)与台站处的地下受力状态有关;异常有方向性;各异常量(时间、幅度)随震级的加大,震中距的缩短而增加;异常的时、空分布与地震活动的异常(时、空、强弱的分布)一致。并且,强震异常有不可恢复的现象。上述结果均不同程度地得到自然条件下压缩岩(土)层的电阻率变化实验结果所证实。为此提出加强地电阻卒的观测,进一步研究其所表现的分布特性,对提高预测效果会带来益处。
In this paper, we present four characteristics of resistivity anomalies before earthquakes from the precursors of geotemperature resistivity observed in our country for more than ten years and the compression tests of rock and soil under natural conditions: the abnormal morphology (ascending or descending or (Time and amplitude) increased with the increase of magnitude and the epicentral distance shortened and increased; the anomalous distribution of time, space and seismicity The anomaly (time, space, strength distribution) consistent. In addition, there is an unrecoverable phenomenon of strong earthquake anomalies. The above results are to varying degrees obtained by the natural conditions of compressive rock (soil) layer resistivity test results confirmed by the change. To this end, it is proposed to enhance the observation of earthquakes and further study on the distribution characteristics of earthquakes, which will bring benefits to the improvement of forecasting results.