common depth point

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In multichannel reflection profiling, the unique point on an individual reflector from which seismic reflection information is recorded in traces at different offsets. A set of traces containing information for one CDP is called a ‘CDP gather’, and the midway position between the shots and their respective detectors for a CDP gather is called the ‘common mid-point’ (CMP). See also fold.

Subjects: Earth Sciences and Geography.

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