摘要
利用最大熵谱法和快速傅里叶变换分别对天祝地震序列频谱进行了分析 ,并对分析结果进行了比较 .结果表明 ,上述 2种方法对于提取地震波中的有用信息都是有效的 ,可靠的 .最大熵谱法的分辨率较高 ,傅里叶变换分辨率较低 ,但使用简单。
Frequency spectra of Tianzhu earthquake sequence are analysed by using the fast fourier transform and the maximum entropy spectrum methods and results by the two methods are compared.The results show the two methods are effective and reliable for obtaining useful informations from seismic wave.The resolving power of MEM is higher than FFT,but the FFT is a simple and convenient method.
出处
《西北地震学报》
CSCD
2000年第3期346-348,共3页
Northwestern Seismological Journal
关键词
最大熵谱分析
傅里叶变换
地震频谱
地震波
Maximum entropy spectrum analysis
Fourier transform
Seismic spectral analysis
Tianzhu earthquake
