# Only dither: efficient simultaneous marine acquisition

 Title Only dither: efficient simultaneous marine acquisition Publication Type Conference Year of Publication 2012 Authors Haneet Wason, Felix J. Herrmann Conference Name EAGE Annual Conference Proceedings Month 06 Organization EAGE Keywords Acquisition, EAGE, marine, simultaneous Abstract Simultaneous-source acquisition is an emerging technology that is stimulating both geophysical research and commercial efforts. The focus here is on simultaneous-source marine acquisition design and sparsity-promoting sequential-source data recovery. We propose a pragmatic simultaneous-source, randomized marine acquisition scheme where multiple vessels sail across an ocean-bottom array firing airguns at –- sequential locations and randomly time-dithered instances. Within the context of compressive sensing, where the choice of the sparsifying transform needs to be incoherent with the compressive sampling matrix, we can significantly impact the reconstruction quality, and demonstrate that the compressive sampling matrix resulting from the proposed sampling scheme is sufficiently incoherent with the curvelet transform to yield successful recovery by sparsity promotion. Results are illustrated with simulations of purely" random marine acquisition, which requires an airgun to be located at each source location, and random time-dithering marine acquisition with one and two source vessels. Size of the collected data volumes in all cases is the same. Compared to the recovery from the former acquisition scheme (SNR = 10.5dB), we get good results by dithering with only one source vessel (SNR = 8.06dB) in the latter scheme, which improve at the cost of having an additional source vessel (SNR = 9.44dB). URL https://www.slim.eos.ubc.ca/Publications/Public/Conferences/EAGE/2012/wason2012EAGEode/wason2012EAGEode.pdf Presentation https://www.slim.eos.ubc.ca/Publications/Public/Conferences/EAGE/2012/wa... URL1 http://earthdoc.eage.org/publication/publicationdetails/?publication=58915 Citation Key wason2012EAGEode