High-resolution coherent noise removal

Abstract

In shallow hard water-bottom areas seismic data can be contaminated with linear refracted noise that may totally obscure signal amplitudes at medium and far offsets. Such noise is often highly aliased and resistant to removal via conventional approaches such as FK filtering or linear slant-stack. These can fail to remove the noise sufficiently for an accurate interpretation of amplitudes at far offsets, and have a tendency to smear signal amplitudes at all offsets.