【摘要】 运用随机函数理论,系统研究2013年芦山7.0级地震前区域地震活动能量场的时空特征。结果表明,四川芦山7.0级地震前能量场的前2个主要特征值对应的典型能量场时间因子出现明显上升变化,可能是该次地震的中短期时间异常特征;而主要典型场的空间等值线形成局部能量高值异常危险区,该区域可能是芦山7.0级地震的中短期空间异常特征。更多还原

【Abstract】 Taking the seismic activity as the random field and taking the energy released by earthquakes as the basic elements of the seismic field, the method of natural perpendicular function( or named experiential perpendicular function) development has been adopted to discuss the spatiotemporal features about the energy field of the regional seismic activity before MS7.0 earthquake, Lushan, 2013. The results show that before Lushan MS 7.0 earthquake, the time weight factors of the typical energy field two key eigenvalues correspond to before Lushan earthquake have appeared very evident rising changes. It may be the medium-short-time abnormal. The spatial image of the key typical fields has showed danger zone of high value abnormal of local energy. The zone may be the medium-short-space abnormal. After analyzing the mean spatial image of energy field of research area in recent years, it shows that Lushan MS7.0 earthquake occurred in high release zone of energy field. Because of the region of high energy release zone being large, energy release of the Lushan MS7.0 earthquake may be short, and the strong earthquake may be occur again in the region in the future.更多还原