f Short-path seismic multiples in coal cyclic sequences

Imaging geological structures to any great depth in coat cyclic sequences using conventional seismic reflection techniques is hampered by a lack of high frequency energy penetration caused by the Barths natural filtering effect (quantified by the Q-factor) and short-path multiple interference. It would therefore be favourable to remove the effect of these multiples. Conventional techniques which rely on moveout or the predictability of multiples are seen to be severely limited due to the short time lags between primary and multiple energy and poorly defined periodicity respectively. These sub-wavelength effects are better observed in the frequency domain.