Morphological and chemical features of submarine groundwater discharge zones in the south-eastern part of the Baltic Sea

Author:

Krek A1,Danchenkov A1,Mikhnevich Galina2

Affiliation:

1. Shirshov Institute of Oceanology RAS

2. Immanuel Kant Baltic Federal University

Abstract

The complex study of the bottom sediments and near-bottom water layer of the Gdansk Deep revealed the Ca maximum anomaly, marking the discharge of the Oxford-Titonian aquifer. The discharge zone is associated with gas-saturated sediments, which is caused by a common pathway of aqueous and gaseous fluids upraise along tectonic faults. The detailed survey of a seabed topography and acoustic survey of the sediments upper layer helped to specify the area of gas-saturated sediments and the size of the pockmarks.

Publisher

Geophysical Center of the Russian Academy of Sciences

Subject

General Earth and Planetary Sciences

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