Quantification of Swell Noise on Seismic Lines Gathered in Rough and Calm Seas

H023 QUANTIFICATION OF SWELL NOISE ON SEISMIC LINES GATHERED IN ROUGH AND CALM SEAS Abstract 1 Seismic surveys collected in rough sea conditions are subject to significant swell noise which reduces the data quality to a greater or lesser extent. This noise occurs in bursts throughout the data and is accentuated in the lower depths by amplitude gain functions during processing. Numerical modelling of ocean swell was carried out in order that a much clearer understanding of the way in which the water movement due to waves acts on seismic equipment. The numerical modelling analyses were not only conducted on