Abstract：On land seismic data,well developed peg-leg multiples are rather difficult to be predicted and suppressed because both these multiples and primaries usually have similar NMO,stacking velocity,and frequency components.Based on the virtual events theory,this paper estimates peg-leg multiples and suppresses them with adaptive subtraction,and proposes an applicable virtual-event method for land seismic data.Compared to conventional methods,the proposed method does not require subsurface information and has higher computation efficiency.Synthetic and field data examples show that the proposed method is suitable for prestack seismic data,suppresses peg-leg multiples and highlights primary energy.
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