To attain the benefits of simultaneous shooting in marine data acquisition, either the simultaneous sources have to be placed far apart to minimize the interferences from one another or sufficient attenuation of the interferences is necessary. Attenuating the interferences in a domain where they are randomly distributed has a potential of attenuating the signals particularly when they have conflicting dips. Our experiments indicate that it is easier to preserve the signals if the interference is removed by modeling them in a domain where they are coherent and adaptively subtracting them from the data. In addition, with effective attenuation of the interference, the distance between the simultaneous sources can be substantially reduced.

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