中强地震前山东地下流体地震前兆模糊分维特征研究

• 作 者: 耿杰 魏焕 张昭栋
• 机 构: 山东省地震局
• 出 处: 地震研究
• 发表日期: 1997年03期
• 关键词: 地下流体 地震前兆 中强地震 地震异常 前兆观测 震前的 分维数 井水位 分形 地震信息

采用模糊集理论与分形理论相结合的模糊分维方法，计算山东地下流体在１９８３年菏泽５９级地震和１９９５年苍山５２级地震前的变化。分析结果认为，模糊分维值反映了地震前兆时序观测资料的结构变化特征，具有一定的物理意义，为从复杂的地下流体前兆观测值中提取地震异常信息提供了新的方法，但对某些台（点）、测项而言，必须具体分析其模糊分维变化特征及其震前异常变化特征。

By using the fuzzy fractal dimension method combined with fuzzy set theory and fractal theory, the variation of underground fluid in Shandong before 1983 Heze M5.9 earthquake and 1995 Cangshan M5.2 earthquake was calculated. The results show that the fuzzy fractal dimension value reflects the structural change characteristics of seismic precursory time series observation data and has certain physical meaning. It provides a new method for extracting seismic anomaly information from complicated groundwater precursory observations. However, for some Taiwan (point), measure terms, it must be a specific analysis of its changes in the characteristics of the fuzzy fractal dimension and its anomalous changes before the earthquake characteristics.