摘要
为了正确评价天津宝坻地震台地电阻率的观测效能,调查分析了宝坻地震台地电阻率观测场地和观测系统,统计分析了观测数据的产出和映震效能。结果表明:宝坻地震台地电阻率观测场地、观测系统等基本符合观测规范的要求;观测数据连续、可靠,但精度却有逐年下降的趋势;观测数据对华北北部多个5.0级以上地震和本区及邻近地区多个3.0级以上地震有震前异常反应。宝坻地震台地电阻率观测场地能反映出地震孕育的信息,产出的数据连续、可靠,映震能力较强,但随着城市建设进程的加剧,原良好观测环境有逐渐丧失的可能。
In order to evaluate observational efficiency of earth resistivity in Baodi station, this paper analyzed observation site and system of earth resistivity. The result shows： the observation site and system of earth resistivity in Baodi station meet the requirement of the observation standard; the data is consistent and reliable but accuracy is descending year after year; the data has anomalies before earthquakes with Ms ≥5.0 in North China and earthquakes with Ms ≥3.0 nearby. The observation site of earth resistivity in Baodi station can reflect earthquake preparation; the observation data is consistent and reliable. With the development of city construction, the observation environment is getting worse.
出处
《内陆地震》
2013年第1期74-80,共7页
Inland Earthquake
基金
天津市地震局局内科研项目(101016)
关键词
地电阻率
观测效能评价
映震效能
宝坻地震台
天津
Earth resistivity
Evaluation of observational efficiency
Earthquake reflecting ability
Baodi station
Tianjin
