The coherence cube and related technologies are valuable interpretation aids for fault detection. A testimony to the importance of technique was the citation of “3-D seismic attributes using a semblance-based coherency algorithm” by Marfurt et al. as Best Paper in Geophysics in 1998.

Detection of faults in offshore seismic exploration has been enhanced by algorithms from two families—those that measure coherency and those that detect discontinuities or “edges” by differencing. (Actually it is more accurate to say that these algorithms detect faults by revealing a lack of coherency.) This study applies such “uncoherency” methods to depth migrations from Hibernia...

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