Angle-domain common-image gathers in generalized coordinates

Conclusions

This paper extends the Cartesian ADCIG theory to generalized coordinate systems. The expressions for ADCIGs contain additional coordinate factors describing mesh geometry and wavefield shifts. The method for calculating ADCIGs in an elliptic coordinate system is identical to a Cartesian ADCIG calculation as confirmed by numerical examples. An approach for eliminating the spatial dependency is given; however, this approach is not likely efficient in practice and slant stack calculations will be used an as alternative.