Translations:Migration - book/5/en

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Superposition has an added benefit: It is one of the most effective ways to accentuate signals and suppress noise. Superposition is designed to return primary reflections to their spatial locations. The signal-generated noise still remaining on the traces is out of step with the primaries. Consequently, superposition of a huge number of processed traces results in destruction of much of the remaining signal-generated noise. Superposition provides the desired digital image of the underground structure of the earth