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利用模糊数学中异常从属函数方法对 1 990~ 1 997年华东地区 1 6种前兆观测方法 ,近 5万组观测数据的综合前兆场进行了时空演化特征研究。结果表明 ,异常从属函数 μ对发生在华东地区的 Ms≥ 5.0地震有较好的映震能力 ,可作为中期、中短期预报的综合指标 ,对地震三要素可作出较为准确的判定
Using the method of anomalous membership function in fuzzy mathematics, the temporal and spatial evolution characteristics of the integrated precursory fields of 1 6 kinds of precursory observation methods and nearly 50,000 observations in East China from 1990 to 1997 were studied. The results show that the abnormal subordinate function μ has a good ability of reflecting earthquakes in Ms ≥ 5.0 earthquakes in East China and can be used as a comprehensive index of mid-term and short-term forecasting. The three elements of earthquakes can be judged more accurately