海南省井水位的数字化观测在地震前兆监测中的效能

The Efficiency of Digital Observation of Well Water Level in Hainan Province Earthquake Precursor Monitoring

分析了海南省在运行中的7口数字化观测井井水位的年、月、日正常动态特征,利用小波分析方法得出异常动态特征,以及各井对大震远震的响应特征,并根据以往的震例及未来可能发生的地震,研究了数字化观测井水位在地震前兆监测中的效能情况。结果表明:海南省部分井水位在地震中期和短期前兆异常监测中可发挥效能。在此基础上,提出以后的观测中应加强管理台站周边环境、减少不必要的人为干扰等,保证各井水位的观测在地震前兆监测中的效能发挥。

The paper analyzes the yearly, monthly and daily normal dynamic characteristics from digital water level observation seven wells running for many years in Hainan Province. Based on the abnormal dynamic characteristics obtained by wavelet analysis method, the response characteristics of each well to large or far earthquake, and the previous earthquakes and earthquakes which may occur in the future, the paper deeply studies the efficiency of the digital observation well water level in the earthquake precursor monitoring. The results show that all well water levels can play efficiency in the medium-term earthquake precursory anomaly monitoring; the 85.7% wells water level can play a better performance in the earthquake short-term and short- term precursory monitoring. On this basis, the paper puts forward that the staff should strengthen the management of stations surrounding environment, to reduce unnecessary man-made interference, and ensure the effectiveness of well water level observation in earthquake monitoring.