Geochemistry of Suspended Particulate Matter in the Marginal Filter of the Pregolya River (Baltic Sea)

Oceanology - The article discusses the results of studying the marginal filter of the Pregolya River in different seasons. Three transformation stages of dispersed sedimentary material are...     

The Energy Spectrum of the Current Velocity in the Deep Part of the Black Sea

Doklady Earth Sciences - In 2016–2017, the yearly long measurements of the current velocities were carried out at 100 m depth below the thermocline and at 1700 m depth for the first time,...     

Studies of Sediment Systems of the European Arctic during Cruise 75 of the R/V Akademik Mstislav Keldysh

Oceanology - Abstract—The paper presents the results of systemic oceanological studies of the European part of the Arctic during cruise 75 of the R/V Akademik Mstislav Keldysh. The expedition...     

Lithological and Biogeochemical Investigations of the North Atlantic Sediment System (Data from the 49th Cruise of the R/V Akademik Ioffe)

Oceanology - Marine sediments and samples of suspended particulate matter from the North Atlantic were studied. It is shown that modern sedimentation in this area is controlled mainly by the...     

Geochemistry of Suspended Particulate Matter in the Volga River Marginal Filter

Oceanology - The first data on a long-term study of the Volga River marginal filter are reported. The concentrations of suspended particulate matter, particulate chemical elements, and trace...     

Comparative study of vertical suspension fluxes from the water column,rates of sedimentation,and absolute masses of the bottom sediments in the White Sea basin of the Arctic Ocean

A new approach using dispersed organic matter of the water column in sedimentation traps in comparison with the surface layer of the bottom sediments is applied for the study of marine sedimentation. This approach provides the opportunity for an in situ (by fluxes of sedimentary matter in the water column) study of modern sedimentation in the surface layers of the bottom sediments and tracing the changes in the environment and climate at a new technological level. This also allows us to choose the reverse task: to reconstruct the fluxes of the matter and chemical elements in ancient seas by the rates (or absolute masses) of sedimentation.     

Mineral composition of sedimentary matter in the Caspian Sea

Data on the mineral composition of sedimentary matter and its fluxes in the sediment system of the Caspian Sea are presented. River runoff, aerosols, particulate matter from sediment traps, and the upper layer (0–1 cm) of bottom sediments are considered. The contents of detrital minerals (quartz, albite, and K-feldspar), clay minerals (illite, chlorite, and kaolinite), and carbonates (calcite, Mg-calcite, dolomite, aragonite, and rhodochrosite) are determined. Gypsum was found in bottom sediments but is absent in the other object of the sediment system.