Depth migration of crustal-scale seismic reflection profiles: A case study in the Bohai Bay basin

The application of the pre-stack depth migration (PSDM) method using deep seismic reflection data is still a challenge. In this paper, dataset collected from Bohai Bay Basin used to test applicability method. After improving signal-to-noise ratio prestack gathers and building an accurate velocity model capturing lateral vertical variations, high-quality profile obtained. This shows detailed crustal structures undulating Moho. difference between east west sides Moho imaged in about 6 km. disrupted by several discontinuities. Compared with conventionally stacked time-migration profiles, provides higher-resolution subsurface image information. Combining geological geophysical data, reveals geologic responsible for crust thinning during destruction North China Craton. also more domain information further study crust-mantle interaction area.