Suppression of Multiples from Complex Sea-Floor by a Wave-Equation Approach

G037 SUPPRESSION OF MULTIPLES FROM COMPLEX SEA-FLOOR BY A WAVE-EQUATION APPROACH 1 Summary. We present a new efficient wave-equation scheme for prediction and subtraction of water-layer multiples and peg-legs from an arbitrary 2D irregular sea-floor. The scheme accounts for both multiple reflections and diffractions. The method requires approximate knowledge of the sea-floor geometry. The predicted multiples are split into three terms where each term contains multiple events which require the same amplitude correction. Therefore the method has much fewer problems with the adaptive subtraction of predicted multiples than the iterative SRME approach especially for data from areas with shallow sea-floor.