新20号井井水位动态分析及地震预测效能评价
|
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.
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.
引文
[1]王道.新疆天山地区地下流体地震前兆研究的现状与发展前景[J].内陆地震,1995,9(2):137—149.
[2]王道,张元胜.天山重点监视区地下流体动态地震短期前兆标志体系的研究[J].内陆地震,1997,11(2):112—126.
[2]王道,张元胜.天山重点监视区地下流体动态地震短期前兆标志体系的研究[J].内陆地震,1997,11(2):112—126.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心