摘要
对新 2 0号井井水位动态观测资料进行了全时间过程扫描 ,分析了井水位的年变化规律、主要干扰因素和地震短期前兆异常特征 ,提出了如何判别水位年变叠加、峰谷相位移动和峰谷极差增减等异常是否打破年变规律的有效方法。根据这些指标 ,统计了观测期间乌鲁木齐监视区内发生 5级以上地震时水位的相关异常参数 ,并对该井的地震预测效能进行了初步评价。
The yearly variation rule of water level behavior in Xinjiang No.20 well, main disturbance factors and short-term earthquake precursor feature were studied on the basis of analyzing 1986-2001 water level data of the well, and some effective criteria to judge water level anomaly were put forward, such as yearly variation stack on normal background, peak-to-valley phase advance or postponement, peak-to-valley difference value change. Based on the judging criteria, related water level anomaly parameters of Xinjiang No.20 well during the earthquakes with magnitude 5 or so were made a statistics and analysis. It is thought that the water well of Xinjiang No.20 well is of certain seismic prediction efficacy.
出处
《内陆地震》
2003年第2期150-156,共7页
Inland Earthquake
基金
国家"十五"科技攻关计划项目 (0 1- 0 3- 0 3)
关键词
水位
地震前兆
效能评价
Water level
Earthquake precursor
Efficacy evaluation
