Amplitude balancing for AVO analysis
Arnaud Berlioux and David Lumley
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Source and receiver amplitude variations can distort AVO analysis of
prestack seismic reflection data. We therefore perform an amplitude
balancing of seismic traces from a marine data set. We address this
problem by computing the total energy of each trace in the seismic
survey, and remove the global low-wavenumber amplitude trend from the
resulting 2-D trace energy map. We then estimate an amplitude
coefficient for each physical hydrophone position in the recording
cable, and each shot position along the survey line. We apply these
coefficients to the original seismic traces and successfully remove
most of the source and receiver amplitude variation.
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