Translations:Seismic attributes - book/5/en

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In the early 1950s, the emphasis in seismic exploration was on detecting reflections that could not be seen visually because of high noise levels. The different offsets of detectors from the source caused a reflection to hit one of a pair of traces before the other. As a result, at a reflected event, a discontinuity resulted between the two traces. Thus, points of dissimilarity between two traces spotlighted reflections. By this reasoning, a dissimilarity attribute was required for detecting reflections. Such an attribute would be based on the crosscorrelations between two traces. Those crosscorrelations were computed as the first step.