--> Figure 4. Autotracking attempted on seismic data on the zero-crossing horizon indicated by the black arrows on Figure 3.

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Figure 4. Autotracking attempted on seismic data on the zero-crossing horizon indicated by the black arrows on Figure 3. The lower part of the horizon was not successfully tracked. Similar autotracking attempted on cosine of instantaneous phase attribute tracks the horizon completely. Data courtesy of Arcis Seismic Solutions, TGS.