Bibliographies thématiques / Dvina

Littérature scientifique sur le sujet « Dvina »

Auteur : Grafiati
Publié le 10 mars 2023

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Articles de revues sur le sujet "Dvina"

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Lobchenko, Е. Е., I. P. Nichiporova, N. N. Olennikova, O. L. Romanyuk et N. A. Lampert. « Spatio-Time Changes in the Content of Pollutants in the Surface Waters of the Northern Dvina Basin ». UNIVERSITY NEWS. NORTH-CAUCASIAN REGION. NATURAL SCIENCES SERIES, no 1 (213) (31 mars 2022) : 57–65. http://dx.doi.org/10.18522/1026-2237-2022-1-57-65.

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The long-term (for the period 2000-2020) series of pollutant content in the water of the river Northern Dvina and its tributaries are analyzed. The spatio-temporal change in the average age and average seasonal concentrations of especially high concentrations that affect water quality, formed as a result of monitoring natural and anthropogenic factors is shown. The interannual and intraannual variability of the content of organic substances (according to COD and BOD5), compounds of iron, copper, zinc, and lignosulfonates in the water of the rivers of the Northern Dvina basin was studied. The influence of anthropogenic factors on the water quality of the right and left tributaries of the upper reaches of the Northern Dvina River - Sukhona, Pelshma, Vychegda. The change in water quality for the period 2010-2020 was assessed throughout the river Northern Dvina, Sukhona, Pelshma, Vychegda, the water quality of which is most affected by wastewater from timber industry enterprises, hydromechanized works in the channel part of the Northern Dvina and its tributaries; agricultural activities of enterprises of the agro-industrial complex, as well as bilge waters of river transport.
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Volsky, K. P. « Dvina is a Russian Name ». Вопросы ономастики, no 1 (2015) : 197–202. http://dx.doi.org/10.15826/vopr_onom.2015.1.011.

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Mazurkevich, Andrey, Ekaterina Dolbunova, Ganna Zaitseva et Marianna Kulkova. « Chronological timeframes of cultural changes in the Dnepr-Dvina region (7th to 3rd millennium BC) ». Documenta Praehistorica 44 (3 janvier 2018) : 162. http://dx.doi.org/10.4312/dp.10.

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Since the 1960s, more than 250 radiocarbon dates have been obtained for materials in the Upper Western Dvina area, which cover a timeframe from the 7th to the 1st millennium BC. Ra­diocarbon dates for materials of the Dnepr-Dvina area date the appearance and decline of various cultural traditions – from the formation of the most ancient pottery among hunter-gatherer com­munities until the appearance of the first stock-breeders in the forest zone, the bearers of cultural traditions of the Corded Ware culture. Dates for materials from the Upper Dvina area show both the existence of hiatuses between some cultural-chronological groups coinciding with some sig­nificant climatic and environmental changes, and the quasi (?) co-existence of some of the groups. Could these hiatuses also be traced in material culture, or do they appear because of a lack of data?
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Mazurkevich, Andrey, Ekaterina Dolbunova, Ganna Zaitseva et Marianna Kulkova. « Chronological timeframes of cultural changes in the Dnepr-Dvina region (7th to 3rd millennium BC) ». Documenta Praehistorica 44 (3 janvier 2018) : 162–75. http://dx.doi.org/10.4312/dp.44.10.

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Since the 1960s, more than 250 radiocarbon dates have been obtained for materials in the Upper Western Dvina area, which cover a timeframe from the 7th to the 1st millennium BC. Ra­diocarbon dates for materials of the Dnepr-Dvina area date the appearance and decline of various cultural traditions – from the formation of the most ancient pottery among hunter-gatherer com­munities until the appearance of the first stock-breeders in the forest zone, the bearers of cultural traditions of the Corded Ware culture. Dates for materials from the Upper Dvina area show both the existence of hiatuses between some cultural-chronological groups coinciding with some sig­nificant climatic and environmental changes, and the quasi (?) co-existence of some of the groups. Could these hiatuses also be traced in material culture, or do they appear because of a lack of data?
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Kezha, Yury Nikolaevich. « Rogvolod’s polity and formation of an ethnopolitical organization on the territory of the Middle Dvina in the Хth century ». Studia Slavica et Balcanica Petropolitana, no 2 (30) (2021) : 116–32. http://dx.doi.org/10.21638/spbu19.2021.208.

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The article discusses the first stages in the formation of an ethnopolitical community on the territory of the Belarusian Dvina, known from the annals as «Polochane». Using basic principles developed by the Vienna School of Historical Ethnography, the author identifies significant socio-political changes in the early medieval (9th–10th centuries) history of Eastern Europe due to the emergence of new elites. The formation of stable ethnopolitical communities is associated with the emergence of these elite groups . The absence of particular artifacts of northern European origin in Polotsk and the Polotsk okrug in the 9th – the first half of the 10th century suggests the independent formation of this center on the basis of local social structures. Significant socio-political changes in Eastern Europe arose during the Viking era (9th–10th centuries), and penetration of the North European military-trade groups into the territory of the Middle Dvina was associated with the beginnings of the active functioning of the West-Dvina branch of the Baltic-Black Sea route (the trade route «from the Varangians to the Greeks»). The development of this route became the main reason why Scandinavian leader Rogvolod came to the Polotsk region and formed a territorial and political organization, conditionally referred to as the «Rogvolod Polity». After the middle to the second half of the 10th century, a social transformation took place on the territory of the Middle Dvina, associated with the formation of elite military-trade groups and the formation of a brigade culture. The Rogvolod Polity, as the first stable territorial and political organization in the Dvina basin, created the institutional foundations for the subsequent consolidating ideology (the «core of tradition» according to R. Wenskus), embodied in the 11th century Polotsk princes Rogvolodovichi in the formation of the ethno-political community «Polochane».
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Johnston, Sarah Ellen, Natalia Shorina, Ekaterina Bulygina, Taisya Vorobjeva, Anna Chupakova, Sergey I. Klimov, Anne M. Kellerman et al. « Flux and Seasonality of Dissolved Organic Matter From the Northern Dvina (Severnaya Dvina) River, Russia ». Journal of Geophysical Research : Biogeosciences 123, no 3 (mars 2018) : 1041–56. http://dx.doi.org/10.1002/2017jg004337.

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Belesov, Artyom V., Timofey V. Rezviy, Sergey A. Pokryshkin, Dmitry E. Lakhmanov, Dmitry G. Chukhchin et Alexandr Yu Kozhevnikov. « Impact of Coastal Sediments of the Northern Dvina River on Microplastics Inputs to the White and Barents Seas ». Journal of Marine Science and Engineering 10, no 10 (13 octobre 2022) : 1485. http://dx.doi.org/10.3390/jmse10101485.

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The Northern Dvina River flowing into the White Sea may be one of the main sources of microplastic (MP) pollution in the Arctic region. The coastal sediments of the Northern Dvina River act as an intermediate link in the transport of microplastics to the areas of the White and Barents Seas. The µFT-IR and Py-GC/MS methods were used to determine that up to 200 particles or 120 mg of MP per kg could accumulate in the coastal sediments of the Northern Dvina River. Coastal sediments tend to accumulate ABS and PS plastic particles with a particle size of around 200 µm. The accumulated microplastics (218 particles or 117 mg per kg of sediment per year) are carried away by strong currents, especially during spring flooding, resulting in pollution of the Barents and White Seas. The obtained data play an important role in assessing the MP pollution of the Arctic region, especially the White and Barents Seas.
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Abdulaeva, I. A., et V. E. Loba. « Insult of nobility in Dvina charter ». Juridical Journal of Samara University 7, no 1 (7 juillet 2021) : 18–24. http://dx.doi.org/10.18287/2542-047x-2021-7-1-18-24.

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The article is devoted to the issue of protecting personal honor and dignity during the period of validity of the Dvina Charter (13971398). The text of the Charter explains that insult of nobility, which means a dismissive (negative) assessment of a person and personal behavior in relation to someone class affiliation made in verbal form or by certain actions, is under the criminal-legal prohibition. The purpose of the work is to show the essential features of corpus delicti in the field of insult of nobility containing in the Dvina Charter. This corpus is an important lever of criminal-legal protection of honor and dignity, with considering representation on acceptable form of negative assessment of a person, depending on his class affiliation. This theme is relevant due to the fact that honor and dignity are the values of human society and are inherent in man throughout the history of his existence. And it is appropriate to recall that the society in which we live is characterized by a deep moral crisis, in which these values seem to be pushed into the background, and the protection of these enduring values, based on the principles of humanism and the saving of criminal repression, is transferred to the plane of administrative offenses. It is possible to confirm the correctness of the approach, chosen by the legislator, comparing historical facts. So we consider the task of researching the theme on the criminal-legal protection of personal honor and dignity in the Dvina Charter is scientifically relevant.
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Speranskaya, N. A., et K. V. Tsytsenko. « Evapotranspiration in the basins of the Northern Dvina and the Western Dvina rivers and its variability ». Russian Meteorology and Hydrology 38, no 8 (août 2013) : 567–74. http://dx.doi.org/10.3103/s1068373913080086.

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Chalov, S. R., P. N. Terskii, L. E. Efimova, A. I. Terskaia, V. A. Efimov et I. S. Danilovich. « Problems of hydrological monitoring in transboundary rivers of Eastern Europe (on the example of the Western Dvina ». Engineering survey 13, no 1 (17 juin 2019) : 32–44. http://dx.doi.org/10.25296/1997-8650-2019-13-1-32-44.

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Transboundary rivers are the connecting threads of different states. Hydrological monitoring and water quality control may vary significantly in different countries and leads to difficulties in solving various water management tasks. Trans-border areas require the resolution of a number of special issues, often in the field of interstate relations. This article presents the results of the analysis of hydrological processes monitoring organization in transboundary river basins of Russia and Eastern Europe. The assessment of typical monitoring problems on the example of the Western Dvina river basin under the circumstances of changing population of the territory and legislative framework governing water management is given. From the analysis of the official information sources and field observations, the structure of hydrological observations in the Western Dvina basin in Russia, Belarus and countries of the European Union is compared with their changes over time. Information on the number and density of the monitoring network stations is given, existing standards and documents regulating the procedure of observations, the composition of the measured parameters, the quality of measurements and the availability of monitoring data are compared. The analysis of methods of network observations of suspended sediments in the Western Dvina basin was carried out. The uncertainty of measurements of the concentration of suspended sediments at the outlet in the Russian part of the Western Dvina basin, caused by the existing methods and, thus, typical for determining this parameter on the observation network in the Russian Federation, is revealed. It is shown that differences and uncertainties in the collection and processing of hydrological information in different countries are a key difficulty in organizing monitoring, both at the international and at the state level.
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Thèses sur le sujet "Dvina"

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Schmitz, Niko. « Trends and variability in discharge of the Severnaya Dvina and the Sukhona (north-west Russia), 1882-2004, and there links with climatic variability ». Thesis, University of Reading, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.487100.

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This thesis investigates the long-term changes and shorter-term variability in monthly, seasonal, and arL'1ual discharge between 1882 and 2004 of two rivers, the Severnaya Dvina (SD) and the Sukhona (SU), draining north-western Russia, and links these changes to climatic variability. The Severnaya Dvina is one of the largest rivers of the lUetic Ocean basin and changes in its discharge can potentially affect the Thermohaline Circulation. The SU is a tributary to SD and results have been used to corroborate findings obtained for SD. It has been suggested by previous studies that discharge of the rivers draining the Eurasian sector of the Arctic basin has significantly increased. However, these studies started during one afthe warmest and driest periods on record in the 930s. Analysis of the discharge records of the SD and the SU has shown that that there has been no long-term, linear change in discharge. Strong interdecadal variability characterises both records and a number of significant shifts from lower to higher discharge occurs. The early part of the records (1882 - the early 1930s) is characterised by high annual discharge with many strong positive anomalies. A period of low discharge started in the dry 1930s and continued until the early 1970s. The last decades were characterised by average annual discharge. The main implication from this study is that freshwater inflow trom European Russia into the Arctic Ocean has not changed since 1882. Oscillations in regional climate and large-scale atmospheric circulation (telecop..nection patterns) drive discharge variability. There are close causal links between variability in regional precipitation, air temperature, snow cover, evaporation, and discharge. Variability in teleconnection indices (most importantly North Atlantic Oscillation, Scandinavian and East Atlantic Jet pattern) explains between 13% (summer) and 48% (winter) variance in seasonal discharge. Construction of regression models simulating hydrological variability using climatic variables shows close agreement between modelled and observed values of summer, autumn, and winter discharge of the SD
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Dolbunova, Ekaterina. « Les premières traditions céramiques du Dnepr-Dvina bassin de VIIe-VIe millénaires av. J.-C. : (dans le contexte de la néolithisation de l'Europe de l'Est) ». Electronic Thesis or Diss., Paris 1, 2016. http://www.theses.fr/2016PA01H094.

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L‘étude de l'apparition de la poterie dans Dnepr-Dvina bassin au 7-6 millénaires av. J.C., son développement ultérieur, et la formation des traditions sont au cœur de ce travail. L‘étude faite a permis de mettre en relief quelques traditions céramiques existant ici dans néolithique ancien, établir leur diverse genèse, proposer le schéma de leur chronologie absolue et relative, établir l‘analogie parmi la céramique des autres régions de l‘Europe de l‘Est. La datation 14C, l‘analyse spatiale, ainsi que l‘analyse de la distribution des récipients des diverses phases céramiques selon les sites ont été à la base du schéma de la chronologie relative et absolue élaboré. On présente les fonctions de la céramique, ainsi que les traditions technologiques, morphologiques et ornementaux dans la région étudiée ; ces dernières reflétant les spécificités des cultures locales et les processus d‘interaction entre les populations. Une attention particulière était donnée à l‘étude de la céramique de la région de Dnepr-Dvina dans le contexte du néolithique ancien de l‘Europe de l'Est qui a permis de proposer le modèle de néolithisation pour la fin 7-6 millénaires av. J.C. À partir de l‘analyse de la poterie de Dnepr-Dvina bassin et d‘autres régions, on peut supposer l‘absence du transfert complet d‘autres ensembles céramiques sur le territoire donné, on fixe le transfert seulement leurs composantes séparées. Les traditions communes céramiques ou leurs composantes existées dans divers régions, éloignés sur la distance considérable l‘un de l‘autre, peut indiquer l‘existence de l‘espace commun subculturel unissant les sociums, attribués aux cultures archéologiques différentes
Pottery appearance investigation in the Dnepr-Dvina basin in the 7th-6th mill BC, its development and cultural traditions formation was the main subject of this paper. Several ceramic traditions existed here during early neolithic were distinguished. Their different origin, analogies with other various ceramic assemblages of Eastern Europe and the scheme of relative and absolute chronology were established. The analysis of 14C dates, spatial analysis, and analysis of distribution of vessels attributed to different ceramic phases on archaeological sites became the basis for relative and absolute chronology elaborated for this region. Also different other aspects were regarded, such as vessels’ function, technological, morphological and decor traditions, which reflected paflicularities of local cultures and processes of interaction between different communities. An important part of the thesis was devoted to the study of the place of early neolithic ceramic traditions of Dnepr-Dvina region in the context of ceramic assemblages of Eastern Europe. Thus severals models of neolithisation were proposed for this territory, also specifity of it was described. We might suppose transfer of only some components of ceramic traditions, and not the whole complex on new territories. Ceramic traditions of some of their particular constituents existed in different areas located far away from each other could indicate some commun cultural milieu, that united societies attributed now to different archaeological cultures
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PALLARA, GRAZIA. « Analisi trascrizionale di geni coinvolti nella risposta agli stress abiotici in pioppo (Populus spp.) ». Doctoral thesis, 2010. http://hdl.handle.net/2158/545768.

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Livres sur le sujet "Dvina"

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Taksheeva, Zinaida Vasilʹevna. Dvina moi︠a︡, Dvina : Stikhi. Moskva : Sovremennik, 1985.

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Kruglova, O. V. Narodnai︠a︡ rospisʹ Severnoĭ Dviny = : Folk painting on Northern Dvina. Moskva : Izobrazitelʹnoe iskusstvo, 1987.

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Fraser, Eugenie. The Dvina Remains. Oxford : ISIS, 1997.

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Narodnai͡a︡ rospisʹ Severnoĭ Dviny = : Folk painting on the Northern Dvina. Moskva : Izobrazitelʹnoe Iskusstvo, 1987.

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Carriba, Juan José Hernández. A orillas del Dvina. Madrid : Nostrum, 2004.

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Loginov, V. F., et L. S. Anosova. Zapadnai︠a︡ Dvina--Daugava : Reka i vremi︠a︡. Minsk : Belorusskai︠a︡ nauka, 2006.

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Maevskiĭ, V. V. Nasha Dvina : Kniga po istorii Zapadnodvinskogo raĭona. Tverʹ : Tipografii︠a︡ Aleksei︠a︡ Ushakova, 2004.

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Maevskiǐ, V. Nasha Dvina : Kniga po istorii Zapadnodvinskogo raǐona. Tverʹ : OOO "Tipografii︠a︡ Aleksei︠a︡ Ushakova TUSH", 2004.

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Fraser, Eugenie. The House by the Dvina : Russian childhood. Oxford : ISIS, 1995.

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Fraser, Eugenie. The house by the Dvina : A Russian childhood. Oxford : ISIS, 1995.

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Chapitres de livres sur le sujet "Dvina"

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Gordeev, Viacheslav V., Oleg S. Pokrovsky et Vladimir P. Shevchenko. « The Mixing Zone Between Waters of the Severnaya Dvina River and the White Sea ». Dans The Handbook of Environmental Chemistry, 83–113. Cham : Springer International Publishing, 2018. http://dx.doi.org/10.1007/698_2018_352.

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Terskii, P. N., A. A. Kuleshov et S. R. Chalov. « Water Balance Assessment Using Swat Model. Case Study on Russian Subcatchment of Western Dvina River ». Dans Springer Proceedings in Earth and Environmental Sciences, 83–87. Cham : Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-03646-1_16.

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Chalov, S. R. « Consistency and Uncertainty Analyses of Sediment Transport Monitoring in the Transboundary River : Case Study of Western Dvina (Russian Federation, Belarus and Latvia) ». Dans Springer Proceedings in Earth and Environmental Sciences, 1–5. Cham : Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-03646-1_1.

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« Northern Dvina ». Dans The Western Arctic Seas Encyclopedia, 285–86. Cham : Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-25582-8_140052.

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« Northern Dvina Canal ». Dans The Western Arctic Seas Encyclopedia, 286. Cham : Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-25582-8_140053.

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« Northern Dvina Military Flotilla (NDMF) ». Dans The Western Arctic Seas Encyclopedia, 286–87. Cham : Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-25582-8_140054.

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« Along the Northern Dvina and Beyond to the Arctic Circle ». Dans Architecture at the End of the Earth, 207–16. Duke University Press, 2015. http://dx.doi.org/10.2307/j.ctv11cw7xh.14.

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« Five. Along the Northern Dvina and Beyond to the Arctic Circle ». Dans Architecture at the End of the Earth, 207–42. Duke University Press, 2020. http://dx.doi.org/10.1515/9780822375432-008.

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ШАПОШНИКОВ, АЛЕКСАНДР. « Характерные языковые и понятийные черты восточнославянской общности ». Dans Tradycja i nowoczesność. Z zagadnień języka i literatury Słowian Wschodnich 2, 70–86. Wydawnictwo Naukowe Uniwersytetu Pedagogicznego w Krakowie, 2020. http://dx.doi.org/10.24917/9788380845282.6.

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As a result of the carried-out stratigraphy of areal archaisms and innovations the author came to the conclusion that Krivitji (then the East Slavic) areal was superpositioned on a predominantly Venetic substratum in the banks of the Western Bug, Dvina, Pripyat and Dnieper, some few relics of which are hardly noticeable. The Repertoire of the East-Slavic innovations clearly breaks up into the ancient Krivitji (East Slavic) innovations of VII–VIII centuries. The analysis and stratigraphy of characteristic archaisms and innovations of the East Slavic areal makes it clear that in its repertoire of linguistic archaisms and traditional pantheon the East Slavic dialectal areal and Krivitji dialect in particular clearly originate from Anto-Slavic dialectal group of Late Common Slavonic of the VI century AD. Krivitji originate from Slavic union of tribes of the East-Carpathian areas. On the surface of the western sector of the Eastern Slavic areal some innovations of superstrate nature of Polish origin are visible. They appeared in a period of active hybridization of Old Russian and Old Polish languages, creolization of Polish (in eastern voivodships) in the region of XVI–XVIII centuries.
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« Dvija Chandidas ». Dans Hinduism and Tribal Religions, 470. Dordrecht : Springer Netherlands, 2022. http://dx.doi.org/10.1007/978-94-024-1188-1_300162.

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Actes de conférences sur le sujet "Dvina"

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Kuzavko, Anton. « Changes Of The Dnieper-Dvina Region Business Environment ». Dans IV International Scientific Conference "Competitiveness and the development of socio-economic systems" dedicated to the memory of Alexander Tatarkin. European Publisher, 2021. http://dx.doi.org/10.15405/epsbs.2021.04.64.

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Ovsepyan, Asya. « ASSESSMENT OF MERCURY IN FISH IN THE MOUTH OF THE NORTHERN DVINA RIVER AND THE DVINA BAY OF THE WHITE SEA ». Dans 14th SGEM GeoConference on ECOLOGY, ECONOMICS, EDUCATION AND LEGISLATION. Stef92 Technology, 2014. http://dx.doi.org/10.5593/sgem2014/b51/s20.012.

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ПОТРАВНОВ, А. Л., et Т. Ю. ХМЕЛЬНИК. « Stone Crosses from Upper Volga and Western Dvina Rivers ». Dans Тверь, тверская земля и сопредельные территории в эпоху средневековья. Crossref, 2019. http://dx.doi.org/10.25681/iaras.2018.978-5-9906508-3-1.208-224.

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Одна из главных проблем в изучении каменных крестов заключается в отсутствии необходимого для анализа исчерпывающего объема сведений о существующих объектах. В статье предлагается такой подход к изучению каменных крестов верховьев Волги и Западной Двины как сравнительный анализ по трем главным критериям: особенности мест обнаружения, форма лопастей и изображения на крестах. В качестве основы для такого анализа используется база данных по 1760 каменным крестам на территории России и Белоруссии. В результате возможно уточнение функционального назначения и датировок каменных крестов. The main difficulty of stone crosses analyzing is caused by the lack of information concerning these items. This article studies stone crosses from Upper Volga and Western Dvina Rivers by making comparison upon three main criteria: particularities of places where they were found, shape of crosses’ arms and images made on crosses. Such analyzing is based on description of 1760 stone crosses found in Russian or Belorussian territory. Crosses analyzing can clarify their age and purpose of use.
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Zimovets, Alina, Alina Zimovets, Yury Fedorov, Yury Fedorov, Asya Ovsepyan, Asya Ovsepyan, Vyacheslav Savitskiy et Vyacheslav Savitskiy. « THE REGULARITY OF HEAVY METALS DISTRIBUTION AND BEHAVIOR IN THE BOTTOM SEDIMENTS ON THE PROFILE “NORTHERN DVINA RIVER – WHITE SEA” ». Dans Managing risks to coastal regions and communities in a changing world. Academus Publishing, 2017. http://dx.doi.org/10.31519/conferencearticle_5b1b93c8b57a02.64869435.

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A study was conducted to investigate the level of heavy metals in bottom sediments of the Northern Dvina mouth area and the White Sea in various seasons since 2004. Of greatest interest for the study was presented as such heavy metals as Hg, Pb, Cd, Cu, Ni, Zn, Cr, which belong to the priority group of toxic elements. The heavy metals concentrations were determined with atomic absorption spectrometer. Also the grain-size composition, concentrations of organic carbon and values of hydrogen ion exponent (pH) and redox potential (Eh) in bottom sediments were determined. It was found that the levels of heavy metals in sediments significantly changed in the lateral radial direction. There is a tendency to increased concentrations of some heavy metals downstream of the river. The high concentrations of heavy metals were found within the influence of cities and towns. So the extremely high mercury concentrations were found in the sediments of small and shallow channels crossing the Arkhangelsk city. The study of heavy metal concentrations in the bottom sediments along the profile “the Northern Dvina - Dvina Bay - White sea” showed that the marginal filter contributes to the coprecipitation with suspended metals of anthropogenic genesis. These processes greatly reduce the contamination risk of the White Sea. Thus, the impact of the river on the ecosystem of the White Sea outside the marginal filter is significantly less.
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Zimovets, Alina, Alina Zimovets, Yury Fedorov, Yury Fedorov, Asya Ovsepyan, Asya Ovsepyan, Vyacheslav Savitskiy et Vyacheslav Savitskiy. « THE REGULARITY OF HEAVY METALS DISTRIBUTION AND BEHAVIOR IN THE BOTTOM SEDIMENTS ON THE PROFILE “NORTHERN DVINA RIVER – WHITE SEA” ». Dans Managing risks to coastal regions and communities in a changing world. Academus Publishing, 2017. http://dx.doi.org/10.21610/conferencearticle_58b431771359a.

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Résumé :
A study was conducted to investigate the level of heavy metals in bottom sediments of the Northern Dvina mouth area and the White Sea in various seasons since 2004. Of greatest interest for the study was presented as such heavy metals as Hg, Pb, Cd, Cu, Ni, Zn, Cr, which belong to the priority group of toxic elements. The heavy metals concentrations were determined with atomic absorption spectrometer. Also the grain-size composition, concentrations of organic carbon and values of hydrogen ion exponent (pH) and redox potential (Eh) in bottom sediments were determined. It was found that the levels of heavy metals in sediments significantly changed in the lateral radial direction. There is a tendency to increased concentrations of some heavy metals downstream of the river. The high concentrations of heavy metals were found within the influence of cities and towns. So the extremely high mercury concentrations were found in the sediments of small and shallow channels crossing the Arkhangelsk city. The study of heavy metal concentrations in the bottom sediments along the profile “the Northern Dvina - Dvina Bay - White sea” showed that the marginal filter contributes to the coprecipitation with suspended metals of anthropogenic genesis. These processes greatly reduce the contamination risk of the White Sea. Thus, the impact of the river on the ecosystem of the White Sea outside the marginal filter is significantly less.
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Kuzavko, A. « Socio-Demographic Features of Business Environment of Dnieper-Dvina Region ». Dans International Scientific Conference "Far East Con" (ISCFEC 2020). Paris, France : Atlantis Press, 2020. http://dx.doi.org/10.2991/aebmr.k.200312.336.

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Krasnoyarskiy, Boris, Boris Krasnoyarskiy, Asya Ovsepyan, Asya Ovsepyan, Yury Fedorov, Yury Fedorov, Vyacheslav Savitskiy et Vyacheslav Savitskiy. « BOTTOM SEDIMENTS OF LAKES AND STREAMS OF DVINA BAY OF THE WHITE SEA COASTAL AREAS AS AN INDICATOR OF ANTHROPOGENIC IMPACT (BY THE EXAMPLE OF MERCURY POLLUTION) _ ». Dans Managing risks to coastal regions and communities in a changing world. Academus Publishing, 2017. http://dx.doi.org/10.31519/conferencearticle_5b1b93bc761330.98887077.

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The article analyzes the data of expedition studies conducted by the team of the leading scientific school of Professor Fedorov Yu.A. in the Archangelsk region for more then 10-years period of researches. The materials of mercury content obtained for samples of bottom sediments sampled in the mouth area of the Northern Dvina River, the lakes of Arkhangelsk and the surrounding areas, at Dvina Bay and different areas of the White Sea. Based on the available data and having considered the results of the authors working on the subject of mercury pollution in the subarctic region, conclusions about the level of anthropogenic impact on water bodies and streams of the Arkhangelsk region are justified. Factors that contribute to the formation of relatively high and low concentrations of mercury in sediments identified. The effects of mechanical, hydrochemical, hydrological barriers analyzed. The natural background of mercury in the bottom sediments of the region revealed. Comparative analysis of the accumulation of mercury in the bottom sediments of the study area and other parts of the subarctic region realized. Opportunities and conditions for existence of the effect of "secondary pollution" discussed.
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Krasnoyarskiy, Boris, Boris Krasnoyarskiy, Asya Ovsepyan, Asya Ovsepyan, Yury Fedorov, Yury Fedorov, Vyacheslav Savitskiy et Vyacheslav Savitskiy. « BOTTOM SEDIMENTS OF LAKES AND STREAMS OF DVINA BAY OF THE WHITE SEA COASTAL AREAS AS AN INDICATOR OF ANTHROPOGENIC IMPACT (BY THE EXAMPLE OF MERCURY POLLUTION) _ ». Dans Managing risks to coastal regions and communities in a changing world. Academus Publishing, 2017. http://dx.doi.org/10.21610/conferencearticle_58b4315d49ec0.

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Résumé :
The article analyzes the data of expedition studies conducted by the team of the leading scientific school of Professor Fedorov Yu.A. in the Archangelsk region for more then 10-years period of researches. The materials of mercury content obtained for samples of bottom sediments sampled in the mouth area of the Northern Dvina River, the lakes of Arkhangelsk and the surrounding areas, at Dvina Bay and different areas of the White Sea. Based on the available data and having considered the results of the authors working on the subject of mercury pollution in the subarctic region, conclusions about the level of anthropogenic impact on water bodies and streams of the Arkhangelsk region are justified. Factors that contribute to the formation of relatively high and low concentrations of mercury in sediments identified. The effects of mechanical, hydrochemical, hydrological barriers analyzed. The natural background of mercury in the bottom sediments of the region revealed. Comparative analysis of the accumulation of mercury in the bottom sediments of the study area and other parts of the subarctic region realized. Opportunities and conditions for existence of the effect of "secondary pollution" discussed.
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Fedorov, Yu A. « ABOUT THE PRINCIPAL SOURCES OF HEAVY METALS IN THE NORTHERN DVINA RIVER ESTUARY ». Dans SGEM2011 11th International Multidisciplinary Scientific GeoConference and EXPO. Stef92 Technology, 2011. http://dx.doi.org/10.5593/sgem2011/s20.103.

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Ovsepyan, Asya. « ANNUAL DYNAMICS OF MERCURY CONCENTRATIONS IN THE WATERS OF THE NORTHERN DVINA RIVER ». Dans 19th SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings. STEF92 Technology, 2019. http://dx.doi.org/10.5593/sgem2019/3.1/s15.084.

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