Composition and genesis of the organic matter in the bottom sediments of the East Siberian Sea

Vetrov, A. A.; Semiletov, I. P.; Dudarev, Oleg; Peresypkin, V. I.; Charkin, Alexander

doi:10.1134/s0016702908020055

Cited by 37 publications

(11 citation statements)

References 13 publications

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“…The distribution of δ 13 C-OC in the surface bottom sediments was used to distinguish between the two biogeochemical provinces, western and eastern, in the ESAS . This approach was later confirmed with more detailed considerations using biomarkers, isotopes, and C/N ratios (Vetrov et al 2008, Vonk et al 2010. The western geochemical province extends from Vilkitsky Strait (∼120E) in the west to Cape Chukochiy (roughly 172E) in the east, where it is approximately bounded by the isolines of OC and nitrogen isotope ratios: δ 13 C org = −24.5 and δ 15 N org = 7 .…”

Section: Western and Eastern Geochemical Provinces Of The Esasmentioning

confidence: 75%

“…Further studies revealed that the eroded terrestrial OM is available for microbial oxidation; this oxidation is followed by a significant carbon dioxide (CO 2 ) buildup in the water column, and consequent CO 2 release into the atmosphere (Pipko et al 2005, Anderson et al 2009. Partitioning between the riverine and eroded terrestrial OM exported onto the shelf is still under discussion (Rachold et al 2000, Dudarev et al 2003, 2006b, Vetrov and Romankevich 2004, Macdonald et al 2008, Vetrov et al 2008, Vonk et al 2010, Gustafsson et al 2011. Results presented in the current letter serve to contribute to this discussion.…”

Section: Introductionmentioning

confidence: 99%

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On carbon transport and fate in the East Siberian Arctic land–shelf–atmosphere system

Semiletov

Shakhova

Сергиенко

et al. 2012

Environ. Res. Lett.

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This review paper summarizes current understanding of the transport of organic carbon to, and the fate of organic carbon within, the East Siberian Arctic Shelf (ESAS), and of processes determining carbon dioxide (CO 2 ) and methane (CH 4 ) fluxes from the ESAS to the atmosphere achieved from analyzing the data sets obtained on 20 expeditions performed from 1999 to 2011. This study of the ESAS was aimed at investigating how redistribution of old carbon from degrading terrestrial and sub-sea permafrost and from coastal erosion contributes to the carbon pool of the ESAS, how changes in the hydrological cycle of the surrounding land and alteration of terrestrial carbon cycles affect the hydrological and biogeochemical parameters of shelf water masses, and which factors control CH 4 and CO 2 emissions from the ESAS. This report describes selected results achieved by a developing international scientific partnership that has been crucial at every stage of the study and will be even more important in the future.

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Section: Western and Eastern Geochemical Provinces Of The Esasmentioning

confidence: 75%

Section: Introductionmentioning

confidence: 99%

On carbon transport and fate in the East Siberian Arctic land–shelf–atmosphere system

Semiletov

Shakhova

Сергиенко

et al. 2012

Environ. Res. Lett.

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“…The largest river flowing into the ESS is the Kolyma River. Its flow mainly determines the nature of sedimentation in the coastal zone of the sea [8]. In the territory of Yakutia on the Kolyma River there are three large tank farms and a seaport the Green Cape.…”

Section: Subject and Methods Of Studymentioning

confidence: 99%

“…The analysis on the hydrocarbon content in the bottom sediments and soils requires a differentiated approach to isolate the anthropogenic component against the background of natural organic matter. As a result, the study of natural geochemical background is of particular value, since it allows to use the results of analytical studies for the purpose of identification of oil pollution, taking into account the contribution of hydrocarbons of natural origin [7][8][9]. Under the cryolithozone conditions, i.e.…”

Section: Introductionmentioning

confidence: 99%

Assessment of Hydrocarbon State of Soil and Bottom Sediments of Arctic Zone of Yakuti

Лифшиц¹,

Glyaznetsova²,

Chalaya³

et al. 2019

Proceedings of the International Symposium "Engineering and Earth Sciences: Applied and Fundamental Research" Dedicated to the

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The study of soil samples and bottom sediments from the Arctic region of the Sakha Republic (Yakutia) in the coastal zone of the East Siberian Sea (Nizhnekolymsky region) was conducted. The yield of chloroform extracts and the nature of the IR spectra were used to evaluate the hydrocarbon composition of the samples taken. The localized areas with high levels of pollution were identified. All of them were located within the territories of man-made objects. The remaining territories correspond to the background indicators or have insignificant traces of pollution. Following the results of microbiological studies the degree of enrichment with microorganisms of studied soil and bottom sediment samples belong to the category of poorly enriched. It was possible to identify hydrocarbon oxidizing microorganisms, which differ only by their poor qualitative and quantitative composition in some oil-contaminated samples. The low activity of hydrocarbon oxidizing microflora against poor soil enrichment with microorganisms indicates the sluggishly ongoing self-healing processes of soils of the Arctic region.

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“…Ряд исследователей объясняют это проникновением относительно теплых тихоокеанских вод через Берингов пролив [Ogorodnikov, Rusanov, 1978;Grebmeier et al, 2006]. В отличие от Восточно-Сибирского моря, где в осадках преобладает терригенное органическое вещество, в Чукотском море отмечается преимущественно планктоногенное [Grebmeier et al, 2006;Vetrov et al, 2008].…”

Section: краткая геолого-геофизическая характеристика и особенности оunclassified

Late Holocene Sedimentation in Active Geological Structures of the Chukchi Sea

Вологина¹,

Калугин²,

Дарин³

et al. 2018

Geodin. tektonofiz.

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The article presents the detailed analysis results considering bottom sediments from the Chukchi Sea. Two core samples, b16 and НС-8 were taken from the northern Herald Canyon 150 km northeast from NE Wrangel Island. Core b16 has been studied in more detail. According to the 210 Pb measurements, the recent sedimentation rate amounts to 0.9 mm/y-1 at the sampling point. In the bottom layer of the core sample, the minimum concentrations of biogenic components (SiO2bio, Corg, Ntot, and Br) and the increased concentrations of cold-water diatom species Thalassiosira antarctica may result from low biological productivity during the Maunder Minimum. A correlation with recent global warming (11-22 years) is shown by the increased concentrations of SiO2bio, Corg, Ntot, and Br and the decreased values of magnetic susceptibility and X-ray density in the top layer (1-2 cm) of the same core sample. The results of our geochemical and diatom analysis support the available literature data and confirm that the Late Holocene sedimentation in the Chukchi Sea takes place in the zone wherein the water transits from the Pacific to the Arctic Ocean.

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Composition and genesis of the organic matter in the bottom sediments of the East Siberian Sea

Cited by 37 publications

References 13 publications

On carbon transport and fate in the East Siberian Arctic land–shelf–atmosphere system

On carbon transport and fate in the East Siberian Arctic land–shelf–atmosphere system

Assessment of Hydrocarbon State of Soil and Bottom Sediments of Arctic Zone of Yakuti

Late Holocene Sedimentation in Active Geological Structures of the Chukchi Sea

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