Changes

==Data preview example==

==Data preview example==

[[:file:interpreting-3-d-seismic-data_fig13-1.png|Figure 1]] is an opaque volume from a 3-D seismic survey in the southern North Sea Gas Basin. Four horizons are indicated: Top Chalk, Top Keuper, Top Zechstein, and Top Rotliegend. By visualizing the volume with the opacity set so that only the strongest peaks and troughs are opaque, we can see the overall 3-D structure of these horizons prior to interpretation ([[:file:interpreting-3-d-seismic-data_fig13-1.png|Figure 1b]]).

[[:file:interpreting-3-d-seismic-data_fig13-1.png|Figure 1]] is an opaque volume from a 3-D seismic survey in the southern [[North Sea]] Gas Basin. Four horizons are indicated: Top Chalk, Top Keuper, Top Zechstein, and Top Rotliegend. By visualizing the volume with the opacity set so that only the strongest peaks and troughs are opaque, we can see the overall 3-D structure of these horizons prior to interpretation ([[:file:interpreting-3-d-seismic-data_fig13-1.png|Figure 1b]]).

Examining [[:file:interpreting-3-d-seismic-data_fig13-1.png|Figure 1b]], we can note that the anticline at the Top Chalk has a different trend than the anticline at the Top Keuper. Some faulting is evident along the north end of the Top Keuper horizon extending roughly parallel to the trend of the anticline. The Top Zechstein and Top Keuper are approximately conformable in this volume, and the strong amplitude reflections from the west are dipping. Top Rotliegend fault blocks are also evident. By using motion (e.g., rotation around the time axis) and stereo displays, the structures, their relationships, and the positions of specific reflections become much more obvious than they are in the still images in [[:file:interpreting-3-d-seismic-data_fig13-1.png|Figure 1]].

Examining [[:file:interpreting-3-d-seismic-data_fig13-1.png|Figure 1b]], we can note that the anticline at the Top Chalk has a different trend than the anticline at the Top Keuper. Some faulting is evident along the north end of the Top Keuper horizon extending roughly parallel to the trend of the anticline. The Top Zechstein and Top Keuper are approximately conformable in this volume, and the strong amplitude reflections from the west are dipping. Top Rotliegend fault blocks are also evident. By using motion (e.g., rotation around the time axis) and stereo displays, the structures, their relationships, and the positions of specific reflections become much more obvious than they are in the still images in [[:file:interpreting-3-d-seismic-data_fig13-1.png|Figure 1]].