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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.
2007-10-24