Deabsorption prestack time migration from rugged topography

Abstract We developed a modified topography prestack time migration (PSTM) scheme that can improve the imaging resolution by applying effective Q to migration. The computation of traveltime at each location in is based on floating datum smoothed rugged topography. Unlike common quality factor Q, only determines frequency-dependent amplitude and single location, which enables us establish model an inhomogeneous medium. Hence, we acquire using scanning technology according width frequency band signal-to-noise ratio gathers. proposed method be integrated into conventional workflow. Synthetic three-dimensional (3D) field datasets indicate deabsorption PSTM from effective.