in-line | Energy Glossary

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in-line

1. n. [Geophysics]

A seismic line within a 3D survey parallel to the direction in which the data were acquired. In marine seismic data, the in-line direction is that in which the recording vessel tows the streamers.

See: acquisitioncrosslineextended spreadspreadstreamerthree-dimensional seismic data

Diagram of crosslines, inlines, and a time slice.