Onboard de-noise processing for improving towed marine seismic acquisition efficiency

Abstract

In this work we give examples of noise as typically observed and recorded onboard marine seismic acquisition vessels. The selected noise sources considered here are seismic interference, swell, strumming, electrical leakage (crossfeed), snapping shrimp and feeding fish, respectively. We also present a novel approach of dealing with cross-feed and severe strum/tug noise during the acquisition. Proper identification and classification of noise is important since it can guide the processing geophysicist to properly attenuate the undesired noise. It can also support the decision-making process defining whether a 'noisy' line is to be accepted or not, during the acquisition phase.