A Method for Unified Suppression of Surface-related Multiple and Ghosts

Surface-related multiple (SRM) and ghosts are challenging tasks in marine data processing. The surface-related multiple elimination (SRME) method has been proven effective in many cases. But a deghosting process must be applied in advance. The absence of ghosts makes the multiple predicted by SRME less accurate and the adaptive subtraction struggles. We propose a method for unified suppression of SRM and ghosts (USMG). The ghosting operator is used as part of the predictor instead of discarding it. In this way, both the ghosts and SRM are predicted at the same time. Moreover, the predicted multiple is more accurate because of the ghost operator. Therefore, this results in better multiple elimination. Tests on synthetic and field datasets show the feasibility of this method.