Abstract
The paper presents analysis of geological-geophysical data, both from archives and collected in recent expeditions by Shirshov Institute of Oceanology, RAS (SIO RAS) together with satellite data. The interpretation shows modern rise of fluid dynamic activity on North Caspian. Based on summary of previous data, it is possible to recognize ryithmostratigraphic and seismostratigraphic complexes. Side sonar data shows many reflexing objects on the sea bottom. One of the most prominent features of Northern and Central Caspian is great number of pipe-like vertical bodies, they were discovered by SIO RAS expeditions with high-resolution seismic methods. These “pipes” go down beyond seismic section data. All specified seismic anomalies and bottom microrelief can be considered as evidence of vertical migration of gas and water via sediments and its escaping to water by gas and water grifons. Satellite images of North and Central Caspian show great amount of sliks and oil signs on the sea surface, and some of them present constantly on the same place, so it is possible to claim the sub-bottom fluid escape theory. The paper shows connection between bottom structures and grifon activity via satellite images (spatial-time grouping of oil slicks) of 2011–2019.
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