The simple process of CMP stack can act as a powerful mechanism for suppression of multiples and attenuation of many types of linear shot noise (air waves, ground roll, backscatter). In any 3D acquisition geometry, each CMP bin will have a variety of traces that have different shot-receiver offsets and azimuths. These recorded traces will be processed through various algorithms such as scaling, NMO, statics corrections, and so forth prior to summing them into CMP stack traces. The act of summing or stacking will increase coherent signal content and reduce incoherent (uncorrelated) noise—noise such as linear shot noise and multiples...

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