Abstract
The results of multi-year regional geological, geophysical, oil, and hydrogeological exploration related to the study of seas and oceans were used to characterize the submarine hydrogeological structures of the Sea of Okhotsk region - hydrogeological massifs, artesian and volcanogenic basins. The hydrogeological stratification of the geological cross-section was performed, according to which five Cenozoic aquifer systems were distinguished in the artesian basins. The chemical composition of submarine groundwater was characterized, whose mineralization decreases with depth from 27–30 g/dm3 to14–20 g/dm3. Gases (mainly methane) and thermal waters forming orebodies of metallic sulfides and non-metallic minerals are discharged into the bottom sea waters along zones of tectonic faults.
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