Relief of the Kara Sea Bottom and Sediment Sorption Properties as Pollution Accumulation Factors

AbstractRiver discharge is the main source of terrigenous sediments in many coastal areas adjacent to estuaries and deltas of large rivers. Spreading and mixing dynamics of river plumes governs transport of suspended sediments and their deposition at sea bottom at these areas. Generally river plumes have very large synoptic and seasonal variability, which cannot be reconstructed from structure of bottom sediments due to their small accumulation velocity. However, bottom sediments can be indicative of variability of river plumes on inter-annual and decadal time scales. In this study we focus on the large Ob and Yenisei buoyant plumes formed in the central part of the Kara Sea. These plumes interact and mix in the area adjacent to the closely located Ob and Yenisei gulfs. Suspended sediments carried by these river plumes have significantly different geochemical characteristics that can be used to detect Ob or Yenisei origin of bottom sediments. Using new geochemical methods we revealed dependence between spreading patterns of these plumes and spatial distribution and vertical structure of bottom sediments in the study area. This relation is confirmed by a good agreement between local wind and discharge conditions reconstructed for 1948–2001 and vertical structure of bottom sediments.

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Radionuclides Distribution and its Sorption Behavior in the Surface Layer of the Kara Sea Bottom Sediments

Geochemistry International ◽

10.1134/s0016702919110041 ◽

2019 ◽

Vol 57 (11) ◽

pp. 1213-1220

Author(s):

N. V. Kuzmenkova ◽

V. V. Krupskaya ◽

E. V. Duriagina ◽

I. N. Semenkov ◽

S. E. Vinokurov

Keyword(s):

Surface Layer ◽

Bottom Sediments ◽

Kara Sea ◽

Sorption Behavior ◽

Sea Bottom

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Genesis of organic matter in the Kara Sea bottom sediments

Oceanology ◽

10.1134/s0001437011040187 ◽

2011 ◽

Vol 51 (4) ◽

pp. 608-615 ◽

Cited By ~ 4

Author(s):

A. A. Vetrov ◽

E. A. Romankevich

Keyword(s):

Organic Matter ◽

Bottom Sediments ◽

Kara Sea ◽

Sea Bottom

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Sedimentation rates (data on 210pb and 137cs radionuclides) in different facial-genetic types of the Kara sea bottom sediments

Геохимия ◽

10.31857/s0016-752564111158-1174 ◽

2019 ◽

Vol 64 (11) ◽

pp. 1158-1174

Author(s):

V. Yu. Rusakov ◽

A. P. Borisov ◽

G. Yu. Solovieva

Keyword(s):

Bottom Sediments ◽

Sedimentation Rate ◽

Isotope Composition ◽

Original Data ◽

Kara Sea ◽

Sedimentation Rates ◽

Shallow Marine ◽

Novaya Zemlya ◽

Genetic Types ◽

Sea Bottom

In the article original data on isotope composition of natural excess Pb-210 and artificial Cs-137 radionuclides in upper 2550-cm layer of sea-bottom sediments at the Kara Sea (from Ob and Yenisei estuaries, Eastern-Novaya-Zemlya trough, Voronin trough, as well as Sedov bay (Novaya Zemlya)) are presented. The research results showed close tie between sedimentation rates and facial-genetic types of the sea-bottom sediments. Highest sedimentation rates are typical for the terrigenic-estuarine type. The type is divided on tractional load with sedimentation rate 0.40.7 cm per year and mud bank sediments with sedimentation rate 0.71.0 cm per year. The terrigenic-shallow-marine type is characterized by lowest sedimentation rate 0.10.3 cm per year. The background terrigenic-marine type has a broadest spectrum of the sedimentation rates: on trough slope the rates are minimal (likely to terrigenic-shallow-marine type), within central parts of the trough (as a result of gravity creep) the rates may increase up to 0.9 cm per year. Single facial-genetic type is glacial sediments of Navaya Zemlya bays. Measured recent sedimentation rate within inner depression of the Sedov bay is 0.10.2 cm per year.

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Sorption properties of composite sorbent and its components, black sea bottom sediment and oxidized carbon from natural raw material

Russian Journal of Applied Chemistry ◽

10.1134/s1070427211100090 ◽

2011 ◽

Vol 84 (10) ◽

pp. 1726-1731 ◽

Cited By ~ 1

Author(s):

S. S. Stavitskaya ◽

V. M. Vikarchuk ◽

T. P. Petrenko

Keyword(s):

Bottom Sediment ◽

Black Sea ◽

Sorption Properties ◽

Raw Material ◽

Composite Sorbent ◽

Sea Bottom ◽

Oxidized Carbon

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Radionuclides distribution and its sorption behavior in the Kara sea bottom sediments surface layer

Геохимия ◽

10.31857/s0016-752564111187-1195 ◽

2019 ◽

Vol 64 (11) ◽

pp. 1187-1195

Author(s):

N. V. Kuzmenkova ◽

V. V. Krupskaya ◽

E. V. Duriagina ◽

I. N. Semenkov ◽

S. E. Vinokurov

Keyword(s):

Bottom Sediments ◽

Sea Water ◽

Sorption Isotherms ◽

Sorption Kinetics ◽

Kara Sea ◽

Sorption Behavior ◽

Freundlich Equation ◽

Sea Bottom ◽

Complexation Mechanism ◽

Sorption Characteristics

The sorption characteristics of the Kara sea bottom sediments were investigated. The sediments were collected during scientific expedition of the R/V Akademik Mstislav Keldysh (Cruise AMK-66). The mineral and fraction composition of sediments was determined. It has been found that 137Cs sorbed predominantly by an ion exchange mechanism because of the clay minerals presence in the sediments. At the same time, 243Am and 90Sr sorbed from seawater by the surface complexation mechanism. The sorption kinetics for 243Am was established: about 20 hours, 137Cs: 2 hours, 90Sr: less than an hour. The sorption isotherms shows Cs and Am in experiments on marine and distilled water are described by the Henry equation. The Sr behavior in deionized water is described by the Langmuir equation, in the case of sea water, by the Freundlich equation.

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Zoya Il'inichna Glezer – life and scientific achievements

Issues of modern algology (Вопросы современной альгологии) ◽

10.33624/2311-0147-2019-2(20)-318-323 ◽

2019 ◽

pp. 318-323

Author(s):

Zinaida V. Pushina ◽

Galina V. Stepanova ◽

Ekaterina L. Grundan

Keyword(s):

Western Siberia ◽

Kara Sea ◽

European Russia ◽

Great Contribution ◽

The South ◽

The Creation ◽

The 1960S ◽

Scientific Achievements ◽

South Of European Russia

Zoya Ilyinichna Glezer is the largest Russian micropaleontologist, a specialist in siliceous microfossils — Cenozoic diatoms and silicoflagellates. Since the 1960s, she systematically studied Paleogene siliceous microfossils from various regions of the country and therefore was an indispensable participant in the development of unified stratigraphic schemes for Paleogene siliceous plankton of various regions of the USSR. She made a great contribution to the creation of the newest Paleogene schemes in the south of European Russia and Western Siberia, to the correlations of the Paleogene deposits of the Kara Sea.

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