Introduction

In SEP-59 (Zhang, 1988), I describe a new derivation of the dip-moveout (DMO) operator in the Fourier domain. The new operator is kinematically equivalent to Hale's DMO operator but has a different amplitude spectrum. From the results of synthetic experiments, I noticed that the impulse responses of the operator have properties that agree qualitatively with wave theory: the operator tends to give a uniform amplitude response for reflectors of varying dips. However, in that study I did not attempt to make a quantitative explanation of such an amplitude phenomenon.

Black and Egan (1988) studied true-amplitude DMO by starting from the wave equation and deriving the operator in the space-time domain. Interestingly, their results agree with those I obtained in the f-k domain with a purely kinematic approach.

In this paper, I show some numerical results of the quantitative study of true-amplitude DMO. I first review the two different definitions of DMO, then I use synthetic data examples to test the theory. To avoid confusion among various definitions of true-amplitude DMO, I call this operator uniform-amplitude DMO operator.