τ-p变换方法及其在地震资料处理中的应用(Ⅰ)

THE METHOD OFτ-p TRANSFORMATION AND ITS APPLICATION IN SEISMIC DATA PROCESSING,Part I

地矿部北京计算中心

本文简述了τ-p方法研究的发展概况,对τ-p的物理基础作了初步讨论。用比较简洁而又严格的数学方法推导出τ-p变换公式和在计算机上实现的数学模型。试验表明,用文中的数学模型作的变换效果较好。文中给出了用τ-p法消除野外资料中面波的例子。还对三分量地震记录的X分量(SV波)和Z分量(纵波)在τ-p域中的特点进行了初步分析。

In this paper, a brief account of the development of τ-p transformation were concisely described and the physical fundamentals of the τ-p method were tentatively discussed. The formula for τ-p transformation and its mathematical modelling for computerized implementation were derived from the mathematic method laconically and seriously. Testing has proved that better results could be obtained if the recommended modelling is used.Examples of the surface-wave cancellation of the field data by dint of the τ-p method were given. The characteristics of the X-component (SV-wave) and the Z-component (P-wave) of 3-D seismic data in τ-p domain were also discussed tentatively.