| 摘要 |
<p>A method of de-ghosting seismic data acquired in a marine seismic survey comprises estimating ∂<SUB>z</SUB>p (where p is the fluid pressure) from a time-derivative of p and a derivative of p in a horizontal direction such as the x-direction. The time-derivative of p and the derivative of p in the horizontal direction can be readily obtained from the acquired seismic data, and are used to provide an improved estimate of ∂<SUB>z</SUB>p which, in general, cannot be directly determined from the acquired seismic data. Once ∂<SUB>z</SUB>p has been estimated it can be used to de-ghost the acquired seismic data.</p> |
