Changes

For 2-D data, only the traveltime to each event of interest is recorded with its coordinate along the line ''t''(''x''). For 3-D data, both traveltime and amplitude at each (''x, y'') are available from the seismic data cube, ''t''(''x, y'') and ''a''(''x, y''). The traveltimes form a time structure map, and the amplitudes are a horizon slice. [[:file:interpreting-seismic-data_fig12-12.png|Figure 1A]] shows a representative line from the Glenn Pool data volume with sonic overlay and tracked events. Horizon amplitude and time structure maps for the Wilcox are shown in [[:file:interpreting-seismic-data_fig12-12.png|Figures 1B, C]].

For 2-D data, only the traveltime to each event of interest is recorded with its coordinate along the line ''t''(''x''). For 3-D data, both traveltime and amplitude at each (''x, y'') are available from the seismic data cube, ''t''(''x, y'') and ''a''(''x, y''). The traveltimes form a time structure map, and the amplitudes are a horizon slice. [[:file:interpreting-seismic-data_fig12-12.png|Figure 1A]] shows a representative line from the Glenn Pool data volume with sonic overlay and tracked events. Horizon amplitude and time structure maps for the Wilcox are shown in [[:file:interpreting-seismic-data_fig12-12.png|Figures 1B, C]].

==Step 3: Calculate depth conversion velocity==

==Step 3: Calculate depth conversion velocity==