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利用小波分析方法在时间域和频率域都有较高分辨率的特性,建立了水位、水氡的小波中期异常提取的方法.该体系包括研究(预测)目标地震的确定、井(泉)和测项的初选、小波异常的提取及异常性质的鉴定等7个步骤.采用小波异常提取方法,研究了华北、四川及邻区、海南多年积累的震例资料,分析了水位、水氡小波异常与地震活动之间的关系,给出了上述3个地区中期小波异常的时间分布特征.小波异常的超前时间,可作为发震时间的预测指标,为这3个区域的实际震情判定提供依据.
The method of wavelet analysis is used to extract midwavelet anomalies in water level and water radon with high resolution in both time and frequency domains. This system includes the study of (predict) the determination of target earthquakes, The first choice of measure item, the extraction of wavelet anomaly and the identification of the anomalous nature etc. The seismic data collected in North China, Sichuan and its adjacent areas and Hainan for many years are studied by using wavelet anomaly extraction method, and the water level, water radon wavelet The relationship between the anomaly and seismicity is given and the temporal distribution characteristics of the medium-term wavelet anomalies in the above three regions are given. The lead time of the wavelet anomaly can be used as a predictor of the occurrence time of the anomalous earthquake and provide the actual conditions of these three regions in accordance with.