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![]() | Angle-gather time migration | ![]() |
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Amplitude variation with offset (AVO) would not be expected to be very
interesting for the simple models just shown. Consider
Figure 10 which contains an offset gather and a
reflection angle gather taken from space location zero from the dome
model in Figure 4. The offset gather shows exactly
what we expect for such a model - no variation. The angle gather also
shows no variation for angles less than the maximum useful angle
() as discussed in the previous two subsections. However,
when the angle exceeds the maximum useful angle, the event increases
in amplitude and width. This is the phenomenon seen in
de Bruin et al. (1990).
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agather-dome
Figure 10. Gathers taken from space location zero in the dome model. Left: Offset domain. Center: Angle domain less than ![]() |
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![]() | Angle-gather time migration | ![]() |
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