排序方式: 共有17条查询结果,搜索用时 15 毫秒
11.
12.
在文县地电场观测系统中实现了地震异常信号与干扰信号的分离技术.长年的观测实践证明,文县地电场观测点是一个很灵敏的"地震窗口".研究表明,对于文县地电场观测点而言,震级、震中距、异常电信号幅度之间存在着线性关系;对带宽为0.003-30 Hz的异常信号而言,震前异常的时间长短与异常开始至发震时刻的时间长短存在着密切关系,且与震中方位有关.这些关系为文县观测点预测未来地震时、空、强"三要素"提供了很有意义的经验公式,在给出昆仑山口西M_S8.1地震预测意见中起到了良好的作用. 相似文献
13.
14.
15.
16.
Study on the variation characteristics of the geoelectric field preceding earthquakes 总被引:2,自引:0,他引:2
Introduction Geoelectric field is one of the proper physical fields of the Earth. It is controlled by the vari-ous current systems originating outside of the Earth and the internal electrical structure of the Earth as well as the underground current origin. It carries a great amount of information coming from the Earths interior. At present, a lot of observations and studies about the geoelectric field have been made in the world. Many applications and studies of the geoelectric field in the… 相似文献
17.