基于非线性时频分析的地震和爆破识别

摘要

利用非线性赵-阿特拉斯-马克斯(Zhao-Atlas-Marks)时频分析方法对地震和爆破进行分析，结果显示：爆破的时频谱的时频聚集性比地震的时频聚集性较好；地震P波的平均频率大于爆破P波的平均频率；地震S波的平均时频中心相对于爆破分布在时间要频率面左上角。%In this article Zhao-Atlas-Marks time-frequency analysis method was used to distinguish earthquake with explosion. The conclusion is drawn as follow the time-frequency spectrum of earthquake is more dispersive than that of explosion; average frequency of earthquake’s P wave is larger than that of explosion; compared to average time-frequency center of explosion, the average time-frequency center of earthquake is in the upper left corner of the time-frequency plane.