It is weIl known that the diagnostic potential of seismic data may be severely dependent on the acquisition and processing procedures. This is certainly true for any kind of interpretation approach or inversion algorithm but it becomes of the utmost importance when we deal with prestack seismic data. Namely, the Amplitude Vs. Offset (AVO) and the cornbined Amplitude, Phase and Frequency Vs. Offset (APF.VO) analyses may be very sensitive to the previous acquisition and processing. The main purpose of this paper is to show the impact that processing procedures have on the APF.VO responses of reflected signals pertaining to an offshore seismic line. We focus on two separate targets that give rise to bright reflections on the stack section: a cineritic layer and a gas-sand bed.


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