Abstract: With the progress of seismic exploration in deep water, one of the challenges for marine seismic data processing is how to suppress the surface related multiple of complex geological structures, such as slope break zones and rough sea bottom. However, the traditional 3D SRME (surface related multiple elimination) is obviously deficient in data reconstruction. In this paper, the 3D GSRME (generalized surface related multiple elimination) was developed to eliminate surface related multiple. Based on contribution gather and sparse inversion methods, the 3D GSRME can construct the whole surface related multiple data by using the focal transform and 3D curvelet transform. Finally, multiple waves are suppressed by adaptive matching subtraction. The application of 3D GSRME in actual data shows that this method can effectively eliminate the surface related multiple of complex geologic structures with steep slope angle so as to improve the imaging quality.

Key words: focal transform, 3D curvelet transform, 3D GSRME, slope break zone, rough sea bottom, steep slope angle, sparse inversion