A-12 OVER/UNDER ACQUISITION – BREAKING THE RESOLUTION LIMITS S. GRION J. HOBRO J. BARSCH and S. RONEN Summary 1 Seismic resolution is limited by source and receiver ghosts. In marine acquisitions shallow source and receivers increase high frequency content but attenuate the low frequencies fundamental for stratigraphic and structural inversion. On the other hand deep source and receivers enhance the low frequencies at the expense of the high. The combination of data acquired with different cable depths is a solution to this problem and is usually referred to as over/under combination. Over/under can combine in a single image the high-frequency


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