【摘要】 运用随机函数理论,将滇西北至滇南地区的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,研究主要能量场的时间权重系数变化曲线、空间等值线图和研究时段内的均值能量场空间分布。结果发现,能量场的时间权重系数变化曲线较大幅度的升、降变化异常预示了可能发生强震的时间段,而等值线图的高值变化异常对应了可能发生强震的区域。更多还原

【Abstract】 According to the Random Function Theory,we take the seismic energy field from the northwest to the south of Yunnan as a spatial-temporal random function,and study the isogram chart of the time weight coefficient of several typical sub-fields,spatial contour,and distribution of the average energy field by the expansion of natural orthogonal function.We find that the curve’s sharp rise and fall suggests the occurrence time of the strong earthquakes,while the high-value anomaly of the spatial contour suggests the risk zone of the strong earthquakes.更多还原