Оператор суммирования по общей отражающей площадке представляет собой приближенный сейсмический отклик криволинейной границы в неоднородной среде. <...> SeiSmic image enhancement of mud volcano bearing complex Structure by the cdS method, a caSe Study in Se of the caSpian Sea Shoreline mehrdad Soleimani Improving seismic image quality in complex geological structures remains a challenge in seismic imaging. <...> In complex media, imaging of geological structures such as the boundary of salt diapirs, faults, folding systems, overthrust zones, and unconformities are controversial and challenging tasks. <...> Therefore, new imaging methods such as full waveform inversion, path-integral seismic imaging, reverse time migration, and the optimized common reflection surface stack methods were introduced to face these challenges. <...> The common reflection surface stack method was used frequently to resolve some of the problems in complex structure seismic imaging. <...> However, besides its great advantage in enhancing the quality of seismic section, it faces a problem with conflicting dips. <...> The common reflection surface stack operator is an approximation of the reflection response of a curved interface in an inhomogeneous medium. <...> In this study, a new strategy in the common reflection surface e-mail: msoleimani@shahroodut.ac.ir © mehrdad Soleimani, 2016 2250 doi: 10.15372/gig20161210 stack is introduced, which completely resolves the problem of conflicting dips in complex structures. <...> Compared to the common reflection surface stack, the new stacking operator is the approximation of diffraction response of a diffraction point in depth. <...> The kinematic wavefield attributes are defined for that diffraction point, whereas curvature of the interface is not fully considered. <...> In the introduced strategy, there would be a stacking operator for each diffraction ray from the diffractor to the surface. <...> The new method was applied to seismic data from a complex geological mud volcano bearing structure from south east of the Caspian Sea shoreline. <...> This area includes numerous mud volcanoes which act as indicators of gas reservoirs. <...> As a natural phenomenon, mud absorbs the seismic energy and deteriorates the quality of the final seismic section. <...> Therefore, obtaining accurate image of the subsurface structures here, in the boundary portion of the mud volcano, is questionable. <...> To overcome this problem, the new method was used to obtain <...>