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The possibility of forming of the geological depth image from marine seismic data observed with the method of reflected waves by multiple overlaps and the refracted method by deep seismic sounding was investigated. The difference in the algorithms for the creating of depth image using the finite-difference migration on the field of reflected and refracted waves is shown. Also there is presented the possibility of comparing and generalizing their results. Researches were carried out using the example of seismic data, observed with the method of reflected waves by multiple overlaps and the refracted method by deep seismic sounding in the area of the Azov Sea.

Features and basic principles of plotting the graph of marine seismic observations processing with application of original method of finite-difference total wave migration of the sum of central middle point, which is more stabile in case of investigation of complicated geological sections have been considered. The effectiveness of the method is demonstrated on materials of seismic marine observations performed on the continental slope of northwestern shelf of the Black Sea.

Migration transformations of the field of refracted waves make possible imaging of structural features of irregularly shaped refraction boundary in deep dynamic section. First arrivals of refracted waves are persistently traced on the wave field along considerable distances from the source of wave excitation that is a guarantee of a high definition of recreation of structural details of the studied boundary while processing the data of regional seismic exploration. Special features of accomplishment of finite-difference migration of the refracted wave field under conditions of refracting boundary structure complicated by faults have been considered as well as methodic problems, related to valuation of the wave field interval where refracted waves are registered depending on the velocity model of the medium. The results of the studies are demonstrated on the model and practical materials.