Figure 5 - uploaded by Sergey Fomel
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(middle panel) shows that conventional angle-domain mapping misplaces the reflected energy: the reflection is placed at tan θ ≈ 0.55 corresponding to an incorrect reflection angle of 2θ ≈ 57 •. (right panel) shows the same angle-gather after converted wave correction. Now, the energy is correctly places at tan θ ≈ 0.65 which corresponds to a correct reflection angle 2θ ≈ 66 • .
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1 Summary Seismic images obtained by multicomponent wave-equation migration can be decomposed into angle- gathers with a transformation that generalizes the equivalent construction for primary waves. A par- ticularly simple formulation is to use all three components of the offset vector separating sources and receivers at image points. Using full v...
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Context 1
... 4 illustrates that both offsets are non-zero, which invalidates the conventional common-angle constructions that are designed for P-P reflections. Figure 5 (right panel) shows the same angle-gather after converted wave correction. Now, the energy is correctly places at tan θ ≈ 0.65 which corresponds to a correct reflection angle 2θ ≈ 66 • . ...
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