Changes

As it arrives on tape from the processor, 3-D seismic data are organized into lines composed of traces. In the computer these are all merged into a dense cube of data. The data cube can be sectioned, or sliced, in several ways. Vertical cuts through the data cube are called '''lines''' or '''sections'''. For marine surveys, in-line is the direction of boat movement (parallel to receivers) and cross-line is perpendicular to boat movement. For land surveys, there is no uniform definition of in-line and cross-line. A vertical section that is neither inline nor cross-line is an arbitrary line and may be very irregular in map view as needed to pass through locations of interest.

As it arrives on tape from the processor, 3-D seismic data are organized into lines composed of traces. In the computer these are all merged into a dense cube of data. The data cube can be sectioned, or sliced, in several ways. Vertical cuts through the data cube are called '''lines''' or '''sections'''. For marine surveys, in-line is the direction of boat movement (parallel to receivers) and cross-line is perpendicular to boat movement. For land surveys, there is no uniform definition of in-line and cross-line. A vertical section that is neither inline nor cross-line is an arbitrary line and may be very irregular in map view as needed to pass through locations of interest.

The figure below shows how the vertical slices are labeled, depending on their orientation.

[[:file:interpreting-seismic-data_fig12-5.png|Figure 1]] shows how the vertical slices are labeled, depending on their orientation.

[[file:interpreting-seismic-data_fig12-5.png|thumb|{{figure number|12-5}}. Copyright: Liner, 1999; courtesy PennWell.]]

[[file:interpreting-seismic-data_fig12-5.png|thumb|{{figure number|1}}. Copyright: Liner, 1999; courtesy PennWell.]]

==Horizontal slices==

==Horizontal slices==

Horizontal or subhorizontal cuts through a seismic data cube are called slices. As illustrated in Figure 12-5 above, horizontal slices can be

Horizontal or subhorizontal cuts through a seismic data cube are called slices. As illustrated in [[:file:interpreting-seismic-data_fig12-5.png|Figure 1]], horizontal slices can be

* Time slices (horizontal cuts of a time cube)

* Time slices (horizontal cuts of a time cube)