摘要
通过对比分析昭通巡龙测震台记录的重型地面平整机施工事件和微震记录的波形特征差异,认为:强夯土事件释放能量当量相当于ML0.6~1.4级地震,P波初动向下、能量衰减快、波形持续时间短,P/S振幅小于天然地震,两者记录的频谱特征差异较大;微震震相明显,强夯土事件震相不明显。通过分析强夯土事件与微震波形特征差异,可以为非天然地震和天然地震分类识别提供依据。
By comparing and analyzing the waveform characteristics differences between the heavy ground leveling machine construction event recorded by the Zhaotong Xunlongseismic station and the 0.5~1.6 magnitude microseismic records,it is believed that the energy equivalent released by the strong compaction soil event is equivalent to the 0.6~1.4 magnitude earthquake,with P-wave initial movement downward,fast energy attenuation,short waveform duration,and P/S amplitude smaller than that of natural earthquakes.The spectral characteristics of the two records are significantly different.The microseismic phase is obvious,while the seismic phase of the strong rammed soil event is not obvious.By analyzing the differences in the characteristics of strong rammed soil events and microseismic waveforms,a basis can be provided for the classification and recognition of non natural and natural earthquakes.
作者
王泽兰
WANG Zelan(Zhaotong Earthquake Monitoring Center Station,Yunnan Earthquake Agency,Zhaotong 657000,China)
出处
《高原地震》
2023年第3期16-20,34,共6页
Plateau Earthquake Research
关键词
强夯土事件
微震
特征差异
分类依据
Strong compaction event
Micro earthquake
Characteristic differences
Classification basis
