上海地震台阵的F-K分析
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摘要
频率 -波数 (F- K)谱分析是地震台阵数据处理基本方法之一。采用该分析方法 ,可以从地脉动背景中提取有用的地震信号 ,提高地震的定位精度。本文列举了 F- K功率谱的不同计算方法 ,并将该方法应用于上海地震台阵所记录的地震事件。对地震和地脉动的 F- K分析结果得出 ,地震的方位角和慢度值分别对记录长度的分布呈线性特征 ,而地脉动的方位角和慢度值则呈不规则分布
The spectrum analysis of Frequency-wavenumber(F-K)is one of the traditional methods of data processing for seismic array.The available signal of earthquake can be extracted from the background of ground motion and the precision of earthquake locating can be improved by using F-K method.In this paper,we describe the different calculating methods of F-K power spectrum,which are applied to the seismic events recorded in the Shanghai Seismic Array.From the F-K analysis both of earthquake and ground motion,we obtain their azimuth and slowness,via the length of recording respectively,which show the linear distribution for earthquake but show the irregular distribution for ground motion.
The spectrum analysis of Frequency-wavenumber(F-K)is one of the traditional methods of data processing for seismic array.The available signal of earthquake can be extracted from the background of ground motion and the precision of earthquake locating can be improved by using F-K method.In this paper,we describe the different calculating methods of F-K power spectrum,which are applied to the seismic events recorded in the Shanghai Seismic Array.From the F-K analysis both of earthquake and ground motion,we obtain their azimuth and slowness,via the length of recording respectively,which show the linear distribution for earthquake but show the irregular distribution for ground motion.
引文
安艺敬一,P G理查兹.1986.定量地震学理论和方法(第二卷)
国家地震局科技监测司.1995.地震观测技术.北京:地震出版社,220～234
赵仲和,陈会忠,黄志斌等.1997.地震台阵技术预研究项目总结报告.国家地震局数据信息中心技术报告
国家地震局科技监测司.1995.地震观测技术.北京:地震出版社,220～234
赵仲和,陈会忠,黄志斌等.1997.地震台阵技术预研究项目总结报告.国家地震局数据信息中心技术报告