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利用唐山、浑源、岫岩和浙江省的鄞县、珊溪水库地震等不同地震类型的数字地震波资料,经过筛选和整理,对每一个地震序列求出几个台站的尾波振幅衰减特征,k值随时间序列的变化特征。结果表明,虽然k值的变化趋势比较复杂,但还是发现不同震型的k值的变化特征有所不同。从趋势上来说,在主震前后,主震-余震型地震的k值显示先低后高的趋势,震群型地震显示先高后低的趋势。我们可以根据这个特征来判断所发生地震的震型,用于震后地震趋势快速判断。
By using digital seismic wave data of Tangshan, Hunyuan, Xiuyan, Yinxian, and Shanxi reservoirs of different seasons in Zhejiang province, the seismic wave attenuation characteristics of several stations are obtained for each seismic sequence through screening and sorting. Change of k value with time series. The results show that although the changing trend of k value is more complicated, it is found that the variation characteristics of k values of different types of shocks are different. From the trend, the k value of the main shock-aftershock-type earthquake shows the trend of first low and then high after the main shock, and that of the earthquake-swarm earthquake shows the trend of first high and then low. According to this feature, we can judge the earthquake type of the earthquakes that occurred, which can be used to judge the earthquake trend after earthquakes.