Choice of parameters in an AVO inversion

Faranak Mahmoudian, Gary F. Margrave

In AVO inversion the choice of parameters is not neutral in the sense that, although theoretically equivalent, if they are not correctly chosen, the numerical algorithms in the inversion can be inefficient. In this paper we show that in inverting converted shear wave (PS) data choosing S-impedance and density as parameters rather than P-impedance and density, produces a more stable AVO inversion.