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Attenuation of diffracted multiples with an apex-shifted tangent-squared radon transform in image space.

ABSTRACT

In this paper, a method to attenuate diffracted multiples with an apex-shifted tangent-squared Radon transform in angle domain common image gathers (ADCIG) is proposed. Usually, where diffracted multiples are a problem, the wavefield propagation is complex and the moveout of primaries and multiples in data space is irregular. The method handles the complexity of the wave field by migration, providing reasonably accurate migration velocities. As a result, the moveout of the multiples is well behaved in the ADCIGs. For 2D data, the apex-shifted tangent-squared Radon transform maps the 2D space image into a 3D space-cube model whose dimensions are depth, curvature ...

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