【摘要】 本文运用随机函数理论,将云南地区地震活动能量场看作时间和空间的随机函数,用自然正交函数展开方法,研究地震活动区内主要典型能量场的时间权重系数变化曲线以及该典型能量场的空间等值线图。研究发现,目标曲线较大幅度的升、降变化预示了可能发生中强地震的时间段,而目标等值线图的疏密变化揭示了可能发生中强地震的区域。更多还原

【Abstract】 The random function theory is used in the paper. Taking seismic energy field of the Yunnan region as random function of space and time, the time “weight” coefficients and the isogram of first several typical fields in the seismic region that are studied by the method of natural orthogonal function expansion. People have found that curve’s values had upward and downward changes of large amplitudes with the time, when the moderate-strong earthquakes are going to occur, where are likely to befallen in the region of spacing isogram.更多还原