Abstract

A new seismic subsurface imaging technology is presented for generating high-resolution, amplitude preserved, angle dependent reflectivity gathers in the local angle domain. Such local angle domain common image gathers (CIG) can be obtained from a multi arrival, ray based Common Reflection Angle Migration (CRAM) creating a uniform illumination at the subsurface image points from all directions. The Common Reflection Angle gathers are ideal input for Amplitude versus Angle (AVA) and prestack inversion studies since they are amplitude and phase preserved.