Modern marine seismic acquisition techniques have drastically reduced the acquisition colt per unit of subsurface coverage . Today modern seismic versels typically record 6 subsurface lines in one vessel traverse; the seismic data volume acquired every 8 seconds may be in exces of 20 Mega bits . However the complexity of the most advanced configurations and the amount of gear deployed at sea have kept the high acquisition costs per unit of time . This lead rome operators to re-think the way seismic data quality must be assessed in the field, evolving from a basic signal to noire ratio evaluation done on single fold data to more sophisticated analysis dove on stacked/filtered data . In the case of bad weather operators sometimes hold the decision to suspend the acquisition until the noise becomes unacceptable on stacked sections processed in a commercial data processing center .


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