【摘要】 利用振幅分布、周期比以及频谱分析3种方法对爆破事件和天然地震进行特征提取。结果表明,地震平均最小振幅分布概率为69.85%,而爆破事件平均最小振幅分布概率为35.21%;天然地震周期比均值为1.431 1,爆破事件周期比均值为0.848 2;地震频谱优势频率集中在1~8 Hz,爆破频谱无明显优势分布。更多还原

【Abstract】 Based on the research of amplitude distribution and period ratio,spectrum analysis,we get some characteristics that can distinguish explosions and small earthquakes.According to the result,average period ratio of earthquake is 1.431 1,and that of explosion is 0.848 2;as the probability of the least amplitude distribution,that of earthquake is 69.85%,but that of explosion is 35.21%.The dominant frequency of natural earthquake distributes between one to eight HZ,and the explosion lacks of dominant frequency.更多还原