Page 380 - Acquisition and Processing of Marine Seismic Data
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7.1 CDP STACK 371
FIG. 7.6 (A) 24, and (B) 48 fold stack sections. As the maximum fold increases, a better removal of the multiples is achieved.
and almost all of the second-order multiple amplitude values are divided by the number
amplitudes are diminished (Fig. 7.8D), as com- of traces involved in the summation. Since this
pared with the conventional stack (Fig. 7.8C). is an averaging process, the approach is known
In the conventional stacking process as mean stack. In this case, all the traces in the
(Section 10.3), all the traces in a CDP gather stacking process are equally weighted using a
are simply summed up and the resultant constant weighting coefficient, and if the
