Free gas and gas hydrate areas, which the existences have been known through the determination of acoustic and physical characteristics of sediments in two different regions (Offshore of Turkey in the eastern Black Sea and the Gwangyang Bay at the south Korea) having geological histories and formations, were mapped with the utilization of high resolution acoustic and seismic methods. Technical as well as scientific collaboration were realized between Institute of Marine Sciences and Technology (IMST) and Pukyong International University(PKNU) based on the marine seismic studies. In this context in both of regions, the Eastern Black Sea and the Gwangyang Bay at the south of Korea, shallow gas and gas hydrate formations, various hydrocarbon indicators (pockmarks, mud volcanoes, faults causing seepages) are mapped and sampling was done with piston coring method. Also two mud volcanoes were found in the region and they were named as İzmir and Pusan respectively. This situation supports the probability of existing gas accumulations in this environment.

Keywords: Eastern Black Sea, gas hydrate, BSR, Bright spot, Multichannel seismic reflection