地震地磁观测与研究2017，Vol.38Issue(6)：10-16,7.DOI:10.3969/j.issn.1003-3246.2017.06.002
数字地震波时频分析
Digital seismic wave analysis based on time frequency method
摘要
Abstract
Time-frequency analysis is a technique that characterizes and analysis signal by using the joint function of time and frequency. In this paper, time-frequency analysis of digital seismic wave is studied with ZAM method. The main results are as follows:①High energy density region of S wave locates in the low frequency band, whose frequency band is narrower than the one of P wave, and the energy density of S wave is one order of magnitude bigger than the one of S wave.②High energy density distribution of natural earthquake is discrete, while high energy density distribution of blasting is concentrative.关键词
数字地震波/时频分析/赵—阿特拉斯—马克斯方法/能量密度Key words
digital seismic wave/time-frequency analysis/ZAM method/energy density引用本文复制引用
戴勇,高立新,张帆,尹战军,郝美仙,倪铭..数字地震波时频分析[J].地震地磁观测与研究,2017,38(6):10-16,7.基金项目
中国地震局监测、预测、科研三结合课题(项目编号:160504) （项目编号:160504）
震情跟踪定向工作任务(项目编号:2017010410) （项目编号:2017010410）
中国地震局地震科技星火计划(项目编号:XH17010Y) （项目编号:XH17010Y）
