地震和爆破时频域能量分布特征的对比分析

运用小波分析方法计算和分析了CDSN乌鲁木齐台记录的天然地震和人工爆破在时频域的能量分布特征,分析结果表明,在震中距大致相同的范围内,同一台站记录的不同当量的人工爆破具有相似的时频变化规律,而天然地震能量分布却存在较大差别。天然地震与人工爆破的时频域能量分布谱图存在比较明显的差异。

A contrastive study on energy distribution characteristics of earthquake and explosion in T-F domain

The multi-scale analysis method based on BWT was used to analyze and study the energy distribution characteristics of natural earthquake and artificial explorsion recorded at the digital telemetry seismic station in Urumqi. The result shows there is clearly difference between the energy distribution characteristics of natural earthquake and artificial explosion . It indicates that the energy distribution of natural earthquake in time-frequency domain is much different from that of artificial explosion,though they are recorded by the same station and have the approximately same approximate distance of epicenter. The reserach result would benefit using tiny earthquake records for earthquake predition.