Angle-domain sensitivity kernels for migration velocity analysis: comparison between theoretically derived and directly measured

Sensitivity kernels for wave equation based migration velocity analysis in local angle-domain are formulated. These sensitivity kernels serve as operators to backproject the residual moveout in local angle-domain common image gathers to migration models for velocity updating. To validate the theoretical formulation, we directly measure sensitivity kernels using a perturb-measuring approach. For single-shot data, the theoretical sensitivity kernels are consistent with those directly measured. For multi-shot data, the local angle domain sensitivity kernels are approximated by stacking the corresponding single-shot sensitivity kernels.