摘要
VSP地震记录的纵、横渡分离方法可分为运动学和动力学两类。本文所述方法属于动力学方法。它基于纵、横波偏振特性的差异,将频率波数域中用体变系数表示的纵波(或用协变系数表示的横波),在排斥横波(或纵波)的情况下,用已知的位移场表示出来,从而得到分离的纵波与横波。模拟和实际资料的试算表明,该方法的处理效果良好,具有一定的应用价值。
The methods for separating out P-wave or S-wave in VSP data include kinematic method and dynamic method. The method here belongs in the dynamic method. In view of the polarization difference between P and S-waves, the P-wave expressed by volume variation coefficient in frequency-wavenumber domain (or the S-wave described using ccivariant coefficient) can be shown by making use of the known displacement field in spite of S-wave (or P-wave), so that P-wave or S-wave can be separated out. The experiments of modeling and real data prove that this method brings good result,so is useful.
出处
《石油地球物理勘探》
EI
CSCD
北大核心
1993年第5期623-628,共6页
Oil Geophysical Prospecting
关键词
垂直地震剖面
波场分离
偏振特性
vertical seismic profile
separation of P-wave from S-wave
wave equation
polarization characteristic
dynamics
