Extending spherical PP wave Class 2 AVO computations to larger depths

Arnim B. Haase, Charles P. Ursenbach

In previous work we have computed spherical wave AVO responses for a maximum depth of 2000 m. A significant difference between spherical wave responses and plane wave comparisons near the critical angle for AVO Classes 1 and 2 had been observed. We have extended spherical PP wave Class 2 computations to 4000 m and 8000 m depth. At 8000 m depth the difference is small and probably negligible in practical situations.