摘要
在 1 991年大同 MS5.8地震余震的记录中 ,一些小地震丛集中可见波形极为相似的地震对 ,利用各对地震记录的互相关函数可以确认其相似性 .为了辨认剪切波波形中发生的微小变化 ,采用重采样技术提高采样率 .可以直接从地震图中观察到丛集中成对地震的剪切波分裂的变化 .
WT5BZ]Among the near source broadband records of the aftershocks of the 1991 Datong, China M L=5.8 earthquake, very similar waveforms from clusters of small earthquakes are observed. Cross correlation of the waveforms of pairs in the cluster confirmed the similarities. Resampling technique is used to increase the sampling rate, which is helpful to distinguish the small variation of shear wave splitting. The variation of shear wave splitting could be found directly from seismograms of each pair in a cluster.
出处
《地震学报》
CSCD
北大核心
2000年第5期501-508,共8页
Acta Seismologica Sinica
基金
中国国家重点基础研究项目!(G1 9980 4 0 70 5)
德国联邦地球科学和自然资源研究院资助
