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—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.
出处
《华南地震》
2014年第2期56-63,共8页
South China Journal of Seismology
基金
浙江省公益技术研究社会发展项目(2011C23061)
关键词
地震
非平稳信号
时频分布
爆破
时间局域特性
频率局域特性
赵-阿特拉斯-马克斯时频分析方法
Earthquake
Nonstatoinary signal
Time-frequency presentation
Explosion
Time field characteristic
Frequency field characteristic
Zhao-Atlas-Marks time-frequency analysis method
