摘要
一些地震发生前后,时常会观测到有别于正常地震波的前驱波信号,这些前驱波信号对于地震的预报和观测有重要的现实意义;钻孔应变观测是观测前驱波信号的重要手段,也是地震前兆观测与研究中不可或缺的主要技术,可以给出传统测震仪观测无法给出的信息;文章概述了当前钻孔体应变观测的原理和研究发展路径,并集中表述了其在实际预测中的重要研究成果;从研究实例上可以看出来,当前的钻孔应变观测结果和实际的地震发生状况存在一定的不确定性,回溯研究表明现在的观测结果还有很大的提升空间。
Before and after some earthquakes,some precursor wave signals could be often observed,which are different from the normal seismic waves.These precursor signals have important practical significance for earthquake prediction and observation.Borehole strain observation is an important means to observe precursor wave signal and also a main technology in earthquake precursor observation and research,which can provide information that traditional seismometer observation cannot give.The principle and development of borehole strain observation are summarized in this paper.The important research results in practical prediction are also presented.From the case study,we can conclude that there is some uncertainty between borehole strain observation and actual earthquake occurrence・Retrospective studies show that there is still a lot of room for improvement in current observations.
作者
孙艺玫
查楠
任雪
张丽
毛佳宁
SUN Yi-mei;ZHA Nan;REN Xue;ZHANG Li;MAO Jia-ning(Liaoning Earthquake Agency,Liaoning Shenyang 110034,China)
出处
《防灾减灾学报》
2021年第4期69-74,共6页
Journal of Disaster Prevention And Reduction
关键词
钻孔应变观测
体应变仪
前驱波
地震预报
borehole strain observation
body strain gauge
precursor waves
earthquake prediction