摘要
将地震前兆探测分为依赖地震孕育过程中漏能释放的第一类检测方法和不依赖漏能释放的第二类检测法二种。当前，除改进第一类方法外还应积极发展第二类前兆检测技术。根据地壳运动观测频域的高频端已建立测震台网，低频端正在建设GPS密集台网，极为重要的中频段台站稀少的现实，提出当前应积极建设定点形变观测密集台网，填补中频段的监测弱视盲区。同时定点形变观测仪器要打好基础，进一步提高观测精度和信噪比。
There are two methods for detecting the earthquake precursors: the first one is to de-tect the energy leakage in the process of earthquake preparation; the second one does not rely on detecting such energy leakage. To obtain the necessary precursory information,the first method should be improved , and we also pay more attention to develop the tech-nique of the second method. According to the fact that scientists have built many seismic networks monitoring high-frequency crustal movement, and GPS networks monitoring low-frequency crustal movement, and only a few observational stations for intermediate-frequency crustal movement. We believe that the intermediate-frequency band is very im-portant for earthquake prediction. We need to build the concentrated and fixed observa-tional networks for monltoring the intermediate-frequency crustal movement. In the mean-time, the observational precision and the signal-noise ratlo of intermediate-frequency in-strument needs to be enhanced.
出处
《地震》
CSCD
北大核心
1998年第4期348-352,共5页
Earthquake
关键词
地震前兆
观测频带
观测精度
观测台网
地震预报
Earthquake precursor, Observational frequency band, Observational precision, Concentrated and fixed network for crustal deformation observation
