f Multichannel attenuation of high amplitude peg legs multiples. Example from the North Sea

Astrong impedance contrast, such as the base of the Cretaceous in the North Sea, generates a train of high amplitude water bottom peg legs which can heavily obscure the underlying less energetic reflections, often of great petroleum interest. Attenuation of these peg legs, a prerequisite for defining the structural image, is a persistent and difficult problem in processing the seismic data.