Geoscience Reference
In-Depth Information
Data cube
Inlines
Crosslines
Time slices
Arbitrary
lines
Fig. 3.7
Different ways of slicing a data cube.
variable intensity mode. In this case, each trace is assigned one column of pixels, within
which each pixel corresponds to a time sample; the pixels are colour-coded to show
amplitude of the particular sample. Choice of colour-coding is under the interpreter's
control, but popular choices are grey-scale (medium-grey for zero-amplitude, shading
to black for large positive and white for large negative amplitudes) and red/blue or
red/black dual polarity (white for zero-amplitude, shading to red for high negative
amplitude and blue/black for high positive amplitude). It is useful to experiment with
different colour bars; grey-scale often brings out subtle events (e.g. reflections oblique
to the bedding, which may be noise or may carry genuine information about internal
