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应用时空域层次分析新思路及我国地震科技攻关成果对珠江三角洲地区的地震前兆资料进行了数据处理和综合分析 ,对该区的地震前兆场特征作了较全面系统的研究 ,并对目前存在的区域前兆异常场进行特征分析。研究认为 ,区内现有的前兆监测方法在中强地震发生前呈现出与正常动态变化相异的中期或中短期前兆异常反映 ,并具有相对丛集的总体特征。前兆异常场由东莞虎门重力、广州水化学等构成。最后对珠江三角洲地区近期的地震危险性进行了分析
By applying the new ideas of time-space-level AHP and the results of China’s earthquake science and technology research, the data processing and comprehensive analysis of the seismic precursory data in the Pearl River Delta area are made. The characteristics of the earthquake precursory field in this area are comprehensively and systematically studied. Regional precursor anomaly field characteristics analysis. The study suggests that the existing precursory monitoring methods in the region present medium-, medium-, and short-term precursory anomalies that reflect normal dynamic changes prior to the strong earthquakes and have the overall characteristics of relative clustering. Prehistoric anomaly field by the Humen, Dongguan gravity, Guangzhou water chemistry and so on. Finally, the author analyzes the recent earthquake risk in the Pearl River Delta