2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/87931We present a parabolic approximation that incorporates reflection. With this approximation, there is no need to solve the parabolic equation for a coupled pair of solutions consisting of the incident and reflected waves. Rather, this approximation uses a synthetic wave whose spectral components manifest the incident and reflected waves.4 pages, LaTeX 2.09. No figures. Key words: ocean acoustics, parabolic approximation, parabolic equation, backscatter, propagationAtmospheric and Oceanic Physicstext