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Next: Chapter 3: Simultaneous matching Up: Thesis Overview Previous: Thesis Overview

Chapter 2: Attenuation of 2D multiples

In this chapter I present the equations that map specular and diffracted 2D multiples from data space to image space. I implement an apex-shifted Radon transform that separates primaries from specular and diffracted multiples in the Radon domain as a function of depth, residual moveout curvature, and apex shift. I then apply the method to a real 2D line from the Gulf of Mexico plagued with strong subsalt specular and diffracted multiples. I show that most of the multiples can be attenuated without significantly affecting the amplitudes of the primaries.