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Seismic Data Processing
multiples are any event in seismic data that has incurred more than one reflection in its travel path. Depending on their time delay from the primary events with which they are associated, multiples are characterized as short-path or peg-leg, implying that they interfere with the primary reflection, or long-path, where they appear as separate events.
The purpose of stacking is to enhance the SNR ratio by eliminating coherent and incoherent noise in the data and to reveal a first subsurface image approximation. The traces in the NMO-corrected CMP gather are stacked (summed up) to produce one stacked trace that represents that CMP.
Multiple
Stacking
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