Removing Bad Traces in Shallow Seismic Exploration


In reflection shallow seismic exploration, bad traces in common shot gather can be identified and removed by quantifying their properties. The relevant properties include: (1) the amplitude of ta trace in some window; (2) the decrease in amplitude as time increases; and (3) the average period of a trace over some window. In general, using each individual property alone only identifies some of the bad traces. However, using all three properties combined identifies almost all them. Therefore, a computer program can be coded to remove most of the bad traces, thereby largely reducing the need for human intervention.

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