Identification method of seismic phase in three-component seismograms on the basis of wavelet transf

• 作 者: 刘希强 周惠兰 沈萍 杨选辉 马延路 李红
• 出 处: Acta Seismologica Sinica(English Edition)
• 发表日期: 2000年02期
• 关键词: wavelet arrival eigenvalue covariance Figure scales scaling foreground noticed i

This paper puts forward wavelet transform method to identify P and S phases in three component seismograms using polarization information contained in the wavelet transform coefficients of signal. The P and S wave locator functions are constructed by using eigenvalue analysis method to wavelet transform coefficient across several scales. Locator functions formed by wavelet transform have stated noise resistance capability, and is proved to be very effective in identifying the P and S arrivals of the test data and actual earthquake data.

This paper puts forward wavelet transform method to identify P and S phases in three component seismograms using polarization information contained in the wavelet transform coefficients of signal. The P and S wave locator functions are constructed by using eigenvalue analysis method to wavelet transform coefficient across several scales Locator functions formed by wavelet transform have stated noise resistance capability, and is proved to be very effective in identifying the P and S arrivals of the test data and actual earthquake data.