Changes

==Vertical slices==

==Vertical slices==

As it arrives on tape from the [[Basic seismic processing|processor]], 3-D seismic data are organized into lines composed of [[trace]]s. 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 in-line nor cross-line is an arbitrary line and may be oriented very irregularly  as needed to pass through locations of interest.

As it arrives on tape from the [[Basic seismic processing|processor]], 3-D [[seismic data]] are organized into lines composed of [[trace]]s. 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 in-line nor cross-line is an arbitrary line and may be oriented very irregularly  as needed to pass through locations of interest.

[[: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|Figure 1]] shows how the vertical slices are labeled, depending on their orientation.

[[file:interpreting-seismic-data_fig12-5.png|300px|thumb|{{figure number|1}}Examples of vertical and horizontal slices. From Liner.<ref name=Liner_1999>Liner, Chris, Elements of 3-D Seismology: Tulsa, PennWell.</ref> Courtesy PennWell.]]

[[file:interpreting-seismic-data_fig12-5.png|300px|thumb|{{figure number|1}}Examples of vertical and horizontal slices. From Liner.<ref name=Liner_1999>Liner, C., 1999. Elements of 3-D Seismology: Tulsa, PennWell.</ref> Courtesy PennWell.]]

==Horizontal slices==

==Horizontal slices==

[[Category:Interpreting seismic data]]

[[Category:Interpreting seismic data]]

[[Category:Geophysical methods]]

[[Category:Geophysical methods]]