一种提取横向各向同性介质中速度参数的方法

A method for extracting velocity parameter in transversely isotropic medium

根据横向各向同性介质（TransverselyIsotropy，TI）中P波和SV波的相速度公式，在沿垂直对称轴方向的近似条件下，讨论了提取TI介质中速度参数的方法，所给出的公式可以用常规的动校正速度分析方法及相应的软件实现。实际中，小井源距多波VSP观测的直达波满足这种沿垂直对称轴方向的近似条件，因此本方法具有重要的实际意义。

The method for obtaining velocity parameters in transversely isotropic medium is discussed in approximate condition of vertical symmetric axis according to the phase velocity formulae of P-wave and SV-wave. The operation of formulae in this method is performed by using ordinary dynamic correction velocity analysis and corresponding softwares. In practice, direct wave in near-offset multiwave VSP satisfies this approximate condition; so this method is of practical importance.