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Geochemical fractions and indicators of sedimentation conditions in the Barents sea 巴伦支海地球化学组分及沉积条件指示

THE BARENTS SEA SYSTEM Pub Date : 2021-09-09 DOI: 10.29006/978-5-6045110-0-8/(31)

L. Demina, D. Budko, N. Politova, T. Alexeeva, E. Novichkova, A. Solomatina, R. Aliev

{"title":"Geochemical fractions and indicators of sedimentation conditions in the Barents sea","authors":"L. Demina, D. Budko, N. Politova, T. Alexeeva, E. Novichkova, A. Solomatina, R. Aliev","doi":"10.29006/978-5-6045110-0-8/(31)","DOIUrl":"https://doi.org/10.29006/978-5-6045110-0-8/(31)","url":null,"abstract":"Research results of geochemical fractions and distribution pattern of the major and trace elements in the sediment cores of the Barents Sea are presented. In the sediment core AMK- 5193, located in the central part of the sea, Al, Cr and Ni were detected predominantly in the lithogenic form (75−97% of the total content) throughout the core. A large or a noticeable portion (from 65% to 30% from total contents) of Pb, Cd, Cu, Ni, Co, Mn, and As was found to be accumulated due to hydrogenous processes, such as adsorption on amorphous Fe-Mn oxyhydroxides and clay particles. In the uppermost oxidized layer (0−6 cm) of St. AMK-5193, where the most intensive exchange processes between the solid and liquid phases of bottom sediments happen, a significant increase in the proportion of geochemically mobile fraction of most metals was found. In this part of the core, the maximum content of Fe and Mn in the form of authigenic oxy-hydroxides which serve an effective sorbent of most trace elements, including heavy metals, was recorded. At st. 5194, the downcore rythmic covariation of the Si/Al, Ti/Al and Fe/Al ratios reflecting contribution of terrigenous matrix, as well as Al/Ca ratio (indicator of physical and chemical weathering) was revealed. Moreover, the Al/Ca ratio exhibited an asynchronous change with the Si/Al and Fe/Al ratios. Also, the downcore variation in the Ti/Al ratio was opposite to that of Mn/Fe (an indicator of geochemically mobile fraction). Variation of the Ti/Zr ratio, reflecting the range of aerosol transport of clastic material, is weakly expressed in the AMK-5194 core, which supports the proximity of the terrigenous source.","PeriodicalId":140472,"journal":{"name":"THE BARENTS SEA SYSTEM","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126260551","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Atmospheric dispersed sedimentary matter over the Barents sea 大气使沉积物质分散在巴伦支海上

THE BARENTS SEA SYSTEM Pub Date : 2021-09-09 DOI: 10.29006/978-5-6045110-0-8/(11)

V. Shevchenko, L. P. Golobokova, S. Sakerin, A. P. Lisitzin, D. Kabanov, A. Novigatsky, M. Panchenko, N. Politova, V. Polkin, O. Popovicheva, T. Khodzher

{"title":"Atmospheric dispersed sedimentary matter over the Barents sea","authors":"V. Shevchenko, L. P. Golobokova, S. Sakerin, A. P. Lisitzin, D. Kabanov, A. Novigatsky, M. Panchenko, N. Politova, V. Polkin, O. Popovicheva, T. Khodzher","doi":"10.29006/978-5-6045110-0-8/(11)","DOIUrl":"https://doi.org/10.29006/978-5-6045110-0-8/(11)","url":null,"abstract":"The concentration and composition of aerosols in the atmosphere over the Barents Sea were studied. Earlier, the contribution of aerosols to the formation of the Arctic environment was underestimated. Our data indicated a noticeable effect of continental aerosol on the atmosphere of the Barents Sea. The relationship of the black carbon concentration and the type of air masses has been established. Its concentration increases hundreds of times in the atmosphere of the sea when continental air is removed. The ionic composition and the content of chemical elements in the insoluble fraction of aerosols of the air over the Barents Sea were studied. The content of most chemical elements (Na, Al, K, Ca, Sc, Fe, Co, Rb, Zr, Cs, Ba, REE, Hf, Ta, Th, U) in the insoluble fraction of aerosols was below the average values for the upper continental crust. The content of Cr, Cu, Zn, As, Se, Br, Ag, Sb, Au, Pb is significantly higher than their average for the upper continental crust, due to the influence of the anthroposphere. Probable sources of anthropogenic pollution of aerosols in the Arctic are discussed.","PeriodicalId":140472,"journal":{"name":"THE BARENTS SEA SYSTEM","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117101868","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

DYNAMICS OF THE COASTAL ZONE IN HOLOCEN ON THE EXAMPLE OF THE NORTH-WESTERN PART OF THE KOLA PENINSULA 全新世海岸带动力学——以科拉半岛西北部为例

THE BARENTS SEA SYSTEM Pub Date : 2021-09-09 DOI: 10.29006/978-5-6045110-0-8/(6)

T. Sapelko, M. Anisimov

引用次数: 0

Concentration and composition of the suspended particulate matter of the Barents sea 巴伦支海悬浮颗粒物质的浓度和组成

THE BARENTS SEA SYSTEM Pub Date : 2021-09-09 DOI: 10.29006/978-5-6045110-0-8/(20)

N. Politova, M. Kravchishina, A. Novigatsky, A. S. Lokhov

引用次数: 0

Evaluation of the modern geoecological state of the fjords of the eastern Barents sea 东巴伦支海峡湾现代地质生态状况评价

THE BARENTS SEA SYSTEM Pub Date : 2021-09-09 DOI: 10.29006/978-5-6045110-0-8/(37)

V. Shakhverdov, D. Ryabchuk, M. Spiridonov, V. Zhamoida, M.V. Shakhverdova

{"title":"Evaluation of the modern geoecological state of the fjords of the eastern Barents sea","authors":"V. Shakhverdov, D. Ryabchuk, M. Spiridonov, V. Zhamoida, M.V. Shakhverdova","doi":"10.29006/978-5-6045110-0-8/(37)","DOIUrl":"https://doi.org/10.29006/978-5-6045110-0-8/(37)","url":null,"abstract":"A brief analysis of the history of environmental geological study of the Barents Sea is given. It shows that at the beginning of industrial development the geological environment was characterized by a low level of disturbance and pollution. On example of the Kola Bay, an assessment of the current environmental geological conditions of the fjords in the eastern part of the Barents Sea is given. Seismic-acoustic studies confirm the predominantly tectonic origin of the bay and the hazardous spread of gravitational rocks movement within the coastal slopes. The background geochemical characteristics of recent bottom sediments are quantified. It is shown that geochemical zoning of the bottom of the bay is a consequence of both natural and anthropogenic processes. According to the content of Cu, Zn, As, Cd, Pb, Hg and hexane-soluble petroleum products (PP) in the bottom sediments, the characteristics of various areas were obtained. It is shown that the distribution of PP and several other pollutants in the main components of aquatic and coastal geosystems is a leading element of the environmental monitoring system, quantitative assessment of anthropogenic impact and accumulated environmental damage. Active economic activity within the southern leg of the Kola Bay, as well as the naval bases, significantly affects the distribution of chemical elements. The data concerning distribution of chemical elements forms in bottom sediments are given that suggest a high probability of secondary pollution of the bottom water when the physicochemical conditions of sedimentation processes change. A comparative analysis showed that bottom sediments of the Kola Bay are characterized by the highest concentration of chemical elements in the North-West Region of the Russian Federation.","PeriodicalId":140472,"journal":{"name":"THE BARENTS SEA SYSTEM","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134195210","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Grain-size and mineral composition of the upper layer of sediments of the Barents Sea 巴伦支海上层沉积物的粒度和矿物组成

THE BARENTS SEA SYSTEM Pub Date : 2021-09-09 DOI: 10.29006/978-5-6045110-0-8/(29)

N. Politova, T. Alekseeva, N. Kozina, M. Kravchishina, O. Dara

{"title":"Grain-size and mineral composition of the upper layer of sediments of the Barents Sea","authors":"N. Politova, T. Alekseeva, N. Kozina, M. Kravchishina, O. Dara","doi":"10.29006/978-5-6045110-0-8/(29)","DOIUrl":"https://doi.org/10.29006/978-5-6045110-0-8/(29)","url":null,"abstract":"The paper presents data from grain size and mineralogical analyzes of surface bottom sediment samples obtained on several cruises of the R/V Akademik Mstislav Keldysh (2016–2018) from different parts of the Barents Sea. Pebble and gravel material is found in surface sediments in the form of impurities scattered throughout the sea. Such a chaotic distribution pattern is apparently associated with ice separation. Coarse material is most common in the Barents Sea off the coast of the Kola Peninsula, off the coast of Novaya Zemlya, Spitsbergen, where it accumulates due to coastal abrasion. In addition, a fraction >1 mm is widespread at depths where fine fractions are stirred and leached. The most common sediments in coastal shallow water are sands. Sands (0.1–1 mm) are widespread in the southern and southeastern regions of the sea, in the region of the Pechora polygon, the Kaninsky shallow water, the Kola Peninsula, and in the northwest, off the coast of Svalbard. With increasing depth, the sands are replaced by mixed sediments with a low admixture of pelite. Pelitic sediments are prevalent in the central part of the sea. Precipitation with a pelitic fraction (<0.01 mm) of more than 50% occupy about 70% of the Barents Sea. They are widespread in deep-sea hollows and trenches, as well as in the numerous fiords of the North Island of Novaya Zemlya and Franz Josef Land. Surface sediments have a predominantly terrigenous composition; only at the border with the Norwegian Sea the proportion of biogenic material increases. The mineral composition of sediments is dominated by quartz and feldspars, clay minerals are mainly represented by illite, smectite and kaolinite.","PeriodicalId":140472,"journal":{"name":"THE BARENTS SEA SYSTEM","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122472954","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Hydrocarbons in waters and bottom sediments Of the Barents sea 巴伦支海水域和海底沉积物中的碳氢化合物

THE BARENTS SEA SYSTEM Pub Date : 2021-09-09 DOI: 10.29006/978-5-6045110-0-8/(35)

I. Nemirovskaya, A. M. Titova, A. Khramtsova

引用次数: 1