Page 446 - Acquisition and Processing of Marine Seismic Data

9.3 VELOCITY ANALYSIS IN PRACTICE 437

FIG. 9.10 (A) Parameters used in travel time computations of six reflections to obtain a synthetic CDP with 120 traces given
in (B). This synthetic CDP is used to analyze some of the parameters affecting the velocity analysis.

FIG. 9.11 Schematic illustration of 2D supergather formation using five neighboring CDPs (blue circles). The resultant
supergather is assigned to the location of the CDP at the center (red circles).