Ultra High-Resolution Marine Seismic Survey Methodology

This technical report investigates a novel ultra high-resolution (UHR) marine seismic configuration deployed during a field test conducted offshore Concarneau, France, in June 2024. The study compares two seismic acquisition configurations: a conventional UHR survey with a shallow streamer towed behind the source and a novel configuration where the source is positioned above a deep streamer. The report details the equipment used, including the SIG KappaSpark sparker, and outlines the geological context of the survey area, characterized by Eocene formations and Holocene sediments. It describes the challenges faced during the survey, such as the effects of shallow water and adverse weather conditions on data quality, and presents the processing techniques employed to enhance the seismic images. The findings illustrate the advantages of the novel configuration in achieving improved source signature estimation and data processing outcomes, which are critical for accurate subsurface imaging in marine environments.