天津前兆台网映震效能评价

依据2002-2011年天津年度地震趋势研究报告,统计了天津前兆台网观测项目的前兆异常情况.并以首都圈地区ML4.0以上地震和华北地区Ms5.0以上地震作为震例,从总体映震能力、观测项目的映震比例、有震异常比例、前兆台网映震的方向性、各前兆学科的映震能力等方面,对天津地区前兆台网的映震情况进行深入分析.最后,对天津前兆台网现阶段存在的问题进行讨论.

Analysis of Earthquake Reflecting Ability of Tianjin Earthquake Precursor Network

On the basis of the annual report for the earthquake trend of Tianjin from 2092 to 2011, this pa- per collected the precursor anomalies of the observation projects in Tianjin earthquake precursor network. And selecting ML≥4. 0 earthquakes occurred in capital area and Ms≥5.0 earthquakes occurred in North China as earthquake examples, we analyzed the earthquake reflecting ability of Tianjin earthquake precur- sor network thoroughly from the overall earthquake-reflecting capacity, the earthquake-reflecting propor- tion of the observation projects, the proportion of the seismic precursor, the earthquake-reflecting direc- tionality of the precursory network and the earthquake-reflecting capacity of the various subjects, etc. Fi- nally, this paper discussed the existing problems in tianjin earthquake precursor network.