DOCSLIB.ORG

Pu-239240 and Cs-137 in Surface Sediments of the Kara

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text

Load more

XA9951939 IAEA-SM-354/6P 239,240Pu! , 137Cs AND "'Sr IN BOTTOM SEDIMENTS OF THE KARA SEA. THE ATTEMPT TO RECONSTRUCT RATE OF THE RADIONUCLIDES SUPPLY TO BOTTOM SEDIMENT IN THE PAST KUZNETSOV, Y. U. V., V. K. LEGIN, A. V. STEPANOV, V. N. STRUKOV V.G.Khlopin Radium Institute, St.Petersburg, Russian Federation A. E. SHISHLOV, YU.V. SAVITSKY Mining and Chemical Combine, Zhelesnogorsk, Russian Federation Despite the availability of extensive information about the levels of technogenous radioactive contamination of the Kara Sea, the problem on assessment of contribution of different sources into forming the total radioactive contamination of this basin remains to be of current interest. Discharge of the largest Siberian rivers - Ob' and Yenisey being exposed to the impact of three Russian plants for weapon plutonium production - is the potential contributor of contamination in the Kara Sea. In the present work, emphases is given to the role of one of these rivers, i.e. Yenisey River, in transfer of the long-lived radionuclides 239Pu, 137Cs and 90Sr into the Kara Sea. 239>240Pu, 137Cs and ^Sr contents were determined in bottom sediments of the Kara Sea and Yenisey Pu-239,240 and Cs-137 in surface sediments of the Kara Sea [Bq/kg] and their ratio. HiRLMSSIA #44 Fig.i •*= •^•Sfes •42 k IRISH t4i i£ •^ lahk 1 f - • - c ft-. -62.61 -67.61 -72.61 -77.61 -82.61 298 River estuary (Fig 1) which were taken during expeditions on research ships "D.Mendeleev" and "D.Ovtsyn" in 1993, as well as in flood-plain and bottom sediments of the Yenisey River the samples 239 24O of which were taken during annual expeditions along the river. Table I presents the data on - pu and 137Cs content in surface layer of bottom sediments of the Kara Sea; Fig.2 shows the connection between distribution of these radionuclides in bottom sediments. Fig.3 illustrates the vertical distribution of m240Pu and 137Cs in bottom sediments (stations 31 and 34). It could be concluded from Figs 2,3 and Table 1 that there is a direct correlation dependence between distribution of these radionuclides in surface layers and vertical section of bottom sediments taken in the Kara Sea. Similar data were obtained in [1] River delta. The observed similarity in behavior of 239>240Pu and 137Cs is substantiated by our data on the high values of distribution coefficients (105 - 103) of these radionuclides between aqueous phase and bottom sediments of the Kara Sea, as well as the data confirming the high stability of 239>240Pu and 137Cs in sea sediments. Similarity in migration behavior of plutonium and cesium on their transfer with solid phase of the Yenisey river run-off into the Kara Sea is confirmed also by the data presented in Tables I and m240 I37 II. Thus, consideration of these data shows that pu and Cs enter efficiently into the structure of the suspensions and bottom sediments of the Yenisey River with high efficiency (Table I). The 239 240 data of Table II show that ' pu is most firmly bound with the structure of the bottom sediments and its return into aqueous phase is practically ruled out. As to 137Cs, such secondary transfer from bottom sediments into river water is possible, although on a limited scale. The relationship among the vertical distribution of 239>240Pu, 137Cs and the age scale as applied to two samples of bottom sediments of the Kara Sea (Figs 1,3) has revealed that the surpassing of present level of supplying these radionuclides into the studied sediments was caused by the most intense tests of nuclear weapons at the beginning of the sixties. TABLE I. DISTRIBUTION COEFFICIENTS (Kds, ml/g) FOR Cs-137 AND Pu-239,240 BETWEEN BOTTOM SEDIMENTS AND WATER PHASES OF YENISEY RIVER AND KARA SEA. Radionuclide Distribution coefficients (Kds) Our data * Reference data Yenisey River Cs-137 2,5*10" - 8,0*10" Pu-239,240 (1,0 - 4,2)*105 Kara Sea Cs-137 l*103 3*103 Pu-239,240 6*10" l*105 * Data of the Russian - Norwegian expedition 2,5 0 £10 15 2025303540 FIG. 2. Correlations between Cs-137 and Pu-239,240 and Cs-137 and Sr-90 contents in surface bottom sediments 299 ^Sr content in surface sediments of the Yenisey Gulf and the Kara Sea varies within much more 137 m24O 137 narrow range as to Cs and pu content. No direct correlation in distribution of ^Sr and Cs in surface sediments was detected. Distribution coefficients of 90Sr between bottom sediments and aqueous phase calculated by us for the Kara Sea and Yenisey River are much less (101 - 102) than these values as to for ^^u and 137Cs.(Table II). TABLE II. DISTRIBUTION (%) OF Pu-239,240 AND Cs-137 BETWEEN POTENTIAL-MOVABLE AND FIRMLY BOUND FORMS IN BOTTOM SEDIMENTS OF THE YENISEY RIVER (HORIZON 0-5 cm, SOLID PHASE/LIQUID PHASE =1:5). Distance from Potential-mobile forms 1M Acid-soluble form 6M HC1 Unsoluble forms MChC NH4COOH3 km Pu-239,240 Cs-137 Pu-239,240 Cs-137 Pu-239,240 Cs-137 6,5 <0,l 29±3 61±9 46±6 39+5 46±6 9,0 l,2±0,2 11±1 65±6 21±2 33±4 68±5 15,0 l,3±0,2 43±3 61±10 51±5 38±3 5±1 19,0 2,0±0,3 13±1 49±5 20±2 49+5 66±7 0 10 20 30 40 S 20 40 1,8 ] 1 O»-137 1,4 0,4 '• Pu-239,240 1 / \ v \/I 1,2 f 0,3 ; 1 I \ 'I 0,2 V 0.8? 11 K \ V O.E • 0,1 K -•"Cs-13" -•-Pu-23 1,240 0,2 s —4)— —t— 4 6 0 2 4 S 8 10 12 14 16 18 Depth, cm Depth, cm Station 31 Sedimentation rate-l,lmm/y (Pb-210) Station 34 Sedimentation rate-l,8mm/y (Pb-210) F1G.3. Vertical distribution of Cs-137 and Pu-239,240 in bottom sediments (Station NN 31 and 34) with decay correction for Cs-137 In conclusion we can say: • The migration of 239>240Pu and 137Cs with solid phase of river run-off extends over large areas: this is predominant mechanism of supplying these radionuclides by the Yenisey River into the Kara Sea bottom sediments which are forming under impact of solid phase of the Yenisey river run-off. • The main part of 90Sr migrates in soluble form with run-off of the Yenisey River. This is also dominant species of ^Sr occurrence in the Kara Sea. • The surpassing of present level of 239>240Pu and 137Cs supply into these sediments (30-40 years ago) was caused by the most intense tests of nuclear weapons at the beginning of the sixties. References [1] G.P.PANTELEEV, H.D.LIVINGSTON, F.L.SAYLES, O.N.MEDKOVA. Deposition of Plutonium Isotopes and Cs-137 in Sediments of the Ob' Delta from the Beginning of the Nuclear Age. In: Proceedings of the International Conference "Environmental Radioactivity in the Arctic", Oslo, Norway, 21-25 August 1995, pp.57-64. 300.
Recommended publications
  • Regional Maps of Locations Mentioned in Global Review of The

    Regional Maps of Locations Mentioned in Global Review of The

    Regional Maps of Locations Mentioned in Global Review of the Conservation Status of Monodontid Stocks These maps provide the locations of the geographic features mentioned in the Global Review of the Conservation Status of Monodontid Stocks. Figure 1. Locations associated with beluga stocks of the Okhotsk Sea (beluga stocks 1-5). Numbered locations are: (1) Amur River, (2) Ul- bansky Bay, (3) Tugursky Bay, (4) Udskaya Bay, (5) Nikolaya Bay, (6) Ulban River, (7) Big Shantar Island, (8) Uda River, (9) Torom River. Figure 2. Locations associated with beluga stocks of the Bering Sea and Gulf of Alaska (beluga stocks 6-9). Numbered locations are: (1) Anadyr River Estuary, (2) Anadyr River, (3) Anadyr City, (4) Kresta Bay, (5) Cape Navarin, (6) Yakutat Bay, (7) Knik Arm, (8) Turnagain Arm, (9) Anchorage, (10) Nushagak Bay, (11) Kvichak Bay, (12) Yukon River, (13) Kuskokwim River, (14) Saint Matthew Island, (15) Round Island, (16) St. Lawrence Island. Figure 3. Locations associated with beluga stocks of the Chukchi and Beaufort Seas, Canadian Arctic and West Greenland (beluga stocks 10-12 and 19). Numbered locations are: (1) St. Lawrence Island, (2) Kotzebue Sound, (3) Kasegaluk Lagoon, (4) Point Lay, (5) Wain- wright, (6) Mackenzie River, (7) Somerset Island, (8) Radstock Bay, (9) Maxwell Bay, (10) Croker Bay, (11) Devon Island, (12) Cunning- ham Inlet, (13) Creswell Bay, (14) Mary River Mine, (15) Elwin Bay, (16) Coningham Bay, (17) Prince of Wales Island, (18) Qeqertarsuat- siaat, (19) Nuuk, (20) Maniitsoq, (21) Godthåb Fjord, (22) Uummannaq, (23) Upernavik. Figure 4. Locations associated with beluga stocks of subarctic eastern Canada, Hudson Bay, Ungava Bay, Cumberland Sound and St.
  • 34. Information Sheet on Ramsar Wetlands Categories Approved by Recommendation 4.7 of the Conference of the Contracting Parties

    34. Information Sheet on Ramsar Wetlands Categories Approved by Recommendation 4.7 of the Conference of the Contracting Parties

    34. Information Sheet on Ramsar Wetlands Categories approved by Recommendation 4.7 of the Conference of the Contracting Parties. NOTE: It is important that you read the accompanying Explanatory Note and Guidelines document before completing this form. 1. Date this sheet was FOR OFFICE USE ONLY. completed/updated: DD MM YY September 1997 Designation date Site Reference Number 2. Country: Russian Federation 3. Name of wetland: Brekhovsky Islands in the Yenisei estuary 4. Geographical coordinates: 70°30'N, 82°45'E 5. Altitude: floodplain and islands: < 10 m; 6. Area: c. 1,400,000 ha bedrock coast: up to 118 m a.s.l. 7. Overview: An estuarine wetland complex, incorporating a network of rivers, streams, channels and lakes, as well as islands, floodplains and terraces covered with tundra vegetation. The area is internationally important for breeding, staging and moulting birds, in particular for red-breasted goose Branta ruficollis. 8. Wetland Type (please circle the applicable codes for wetland types as listed in Annex I of the Explanatory Note and Guidelines document.) marine-coastal: A • B • C • D • E • F • G • H • I • J • K inland: L • M • N • O • P • Q • R • Sp • Ss • Tp • Ts U • Va • Vt • W • Xf • Xp • Y • Zg • Zk man-made: 1 • 2 • 3 • 4 • 5 • 6 • 7 • 8 • 9 Please now rank these wetland types by listing them from the most to the least dominant: L,Ts,U,W,O,M . 9. Ramsar Criteria: (please circle the applicable criteria; see point 12, next page.) 1a • 1b • 1c • 1d │ 2a • 2b • 2c • 2d │ 3a • 3b • 3c │ 4a • 4b Please specify the most significant criterion applicable to the site: 1c 10.
  • Radioactivity in the Arctic Seas

    Radioactivity in the Arctic Seas

    IAEA-TECDOC-1075 XA9949696 Radioactivity in the Arctic Seas Report for the International Arctic Seas Assessment Project (IASAP) ffl INTERNATIONAL ATOMIC ENERGY AGENCA / Y / 1JrrziZr^AA 30-16 The originating Section of this publication in the IAEA was: Radiometrics Section International Atomic Energy Agency Marine Environment Laboratory B.P. 800 MC 98012 Monaco Cedex RADIOACTIVITY IN THE ARCTIC SEAS IAEA, VIENNA, 1999 IAEA-TECDOC-1075 ISSN 1011-4289 ©IAEA, 1999 Printe IAEe th AustriAn y i d b a April 1999 FOREWORD From 199 o 1993t e Internationa6th l Atomic Energy Agency's Marine Environment Laboratory (IAEA-MEL s engage IAEA'e wa ) th n di s International Arctic Seas Assessment Project (IASAP whicn i ) h emphasi bees ha sn place criticaa n do l revie f environmentawo l conditions in the Arctic Seas. IAEA-MEe Th L programme, organize framewore th n dIASAi e th f ko P included: (i) an oceanographic and an ecological description of the Arctic Seas; provisioe th (ii )centra a f no l database facilitIASAe th r yfo P programm collectione th r efo , synthesi interpretatiod san datf nmarino n ao e radioactivit Arctie th n yi c Seas; (iii) participation in official expeditions to the Kara Sea organized by the joint Russian- Norwegian Experts Group (1992, 1993 and 1994), the Russian Academy of Sciences (1994), and the Naval Research Laboratory and Norwegian Defence Research Establishment (1995); (iv) assistance wit d n laboratorsiti han u y based radiometric measurement f curreno s t radionuclide concentrations in the Kara Sea; (v) organization of analytical quality assurance intercalibration exercises among the participating laboratories; (vi) computer modellin e potentiath f o g l dispersa f radionuclideo l s released froe mth dumped f assessmeno wast d associatee ean th f o t d radiological consequencee th f o s disposals on local, regional and global scales; (vii) in situ and laboratory based assessment of distribution coefficients (Kd) and concentration factor sArctie (CFth r c)fo environment.
  • A Case Study on the Angara/Yenisey River System in the Siberian Region

    A Case Study on the Angara/Yenisey River System in the Siberian Region

    land Article Optical Spectral Tools for Diagnosing Water Media Quality: A Case Study on the Angara/Yenisey River System in the Siberian Region Costas A. Varotsos 1,2 , Vladimir F. Krapivin 3, Ferdenant A. Mkrtchyan 3 and Yong Xue 2,4,* 1 Department of Environmental Physics and Meteorology, University of Athens, 15784 Athens, Greece; [email protected] 2 School of Environment Science and Geoinformatics, China University of Mining and Technology, Xuzhou 221116, China 3 Kotelnikov Institute of Radioengineering and Electronics, Fryazino Branch, Russian Academy of Sciences, Fryazino, 141190 Moscow, Russia; [email protected] (V.F.K.); [email protected] (F.A.M.) 4 College of Science and Engineering, University of Derby, Derby DD22 3AW, UK * Correspondence: [email protected] Abstract: This paper presents the results of spectral optical measurements of hydrochemical char- acteristics in the Angara/Yenisei river system (AYRS) extending from Lake Baikal to the estuary of the Yenisei River. For the first time, such large-scale observations were made as part of a joint American-Russian expedition in July and August of 1995, when concentrations of radionuclides, heavy metals, and oil hydrocarbons were assessed. The results of this study were obtained as part of the Russian hydrochemical expedition in July and August, 2019. For in situ measurements and sampling at 14 sampling sites, three optical spectral instruments and appropriate software were used, including big data processing algorithms and an AYRS simulation model. The results show Citation: Varotsos, C.A.; Krapivin, V.F.; Mkrtchyan, F.A.; Xue, Y. Optical that the water quality in AYRS has improved slightly due to the reasonably reduced anthropogenic Spectral Tools for Diagnosing Water industrial impact.
  • Pleistocene-Holocene Palaeoenvironmental

    Pleistocene-Holocene Palaeoenvironmental

    Irina D. Streletskaya1*, Еvgeny А. Gusev3,4, Alexander A. Vasiliev2, Gleb E. Oblogov2, Anatoly N. Molodkov5 1Lomonosov Moscow State University, Department of Geography, 119991, Moscow, Leninskie Gory 1, Russia, e-mail: [email protected] *Corresponding author 2Earth Cryosphere Institute SB RAS, 625000, Tyumen, p/o box 1230, Russia; e-mail: [email protected], [email protected] 3VNIIOkeangeologia, 190121 St. Petersburg Angliyskii pr. 1, Russia; e-mail: [email protected] GEOGRAPHY 4St. Petersburg State University, 199034, St. Petersburg, Universitetskaya nab. 7–9, Russia 60 5Research Laboratory of Geochronology of the Quaternary Period, Institute of Geology, Tallinn Technical University, Estonia, 5, Ehitjate Street. 19086 Tallinn. Estonia; e-mail: [email protected] PLEISTOCENE-HOLOCENE PALAEOENVIRONMENTAL RECORDS FROM PERMAFROST SEQUENCES AT THE KARA SEA COAST (NW SIBERIA, RUSSIA) ABSTRACT. The Kara Sea coasts were INTRODUCTION studied using comprehensive stratigraphic Accumulation of Late Pleistocene sediments and geocryological methods. The paper in climatic conditions similar or colder than presents the new analytical studies of present ones, and wide distribution of ground ice and Quaternary deposits of polygonal ground ice exclude the presence Western Taymyr and presents the results of of large ice sheet in the north of West Siberia spore and pollen, foraminifera, grain-size, [Svendsen at al., 2004]. There is evidence of mineralogical, geochemical, oxygen isotopic, marine conditions in the lower Yenisey River and other analyses. Several stratigraphic- during the entire MIS5, which excludes the geocryological transects from Yenisey and glaciation around 90 kBP [Gusev and Molodkov, Gydan Bays enable us to refine the stratigraphy 2012]. Such contradictions in currently existing and palaeogeographical reconstruction of the models of development of northern West environments and freezing of Late Pleistocene- Siberia in the Middle-Late Pleistocene indicate Holocene sediments.
  • Sino-Russian Gas Connections and Impacts

    Sino-Russian Gas Connections and Impacts

    THE JAMES A. BAKER III INSTITUTE FOR PUBLIC POLICY OF RICE UNIVERSITY JAPANESE ENERGY SECURITY AND CHANGING GLOBAL ENERGY MARKETS: AN ANALYSIS OF NORTHEAST ASIAN ENERGY COOPERATION AND JAPAN’S EVOLVING LEADERSHIP ROLE IN THE REGION SINO-RUSSIAN GAS CONNECTIONS AND IMPACTS XIAOJIE XU PETROSTRATEGICSTUDIES BEIJING, CHINA PREPARED IN CONJUNCTION WITH AN ENERGY STUDY SPONSORED BY THE CENTER FOR INTERNATIONAL POLITICAL ECONOMY AND THE JAMES A. BAKER III INSTITUTE FOR PUBLIC POLICY RICE UNIVERSITY – MAY 2000 Sino-Russian Gas Connections and Impacts CONTENT INTRODUCTION CHANGING ENERGY PICTURE IN NORTHEAST ASIA 1. Energy Demands 2. New Hydrocarbon Sources SEARCHING FOR COOPERATION 1. Quests for Russian Resources - Japan - South Korea - North Korea and Mongolia - China 2. Sino-Russian Gas Cooperation - Gas import options and routes - E&P joint ventures in Russia - Extensive cooperation - Financial arrangements - Environmental protection - Governmental coordination - Risk management GEOPOLITICS 1. Geopolitical impacts 2. Geopolitical comparison CONCLUSIONS 1. Prospects 2. Strategic Choices ACKNOWLEDGEMENTS REFERENCE 2 Sino-Russian Gas Connections and Impacts INTRODUCTION Northeast Asia (N. E. Asia), a sub-region on the Eurasian continent, is strategically significant both geographically and economically. The region has a history of strife including the Russian occupation of Japanese northern islands, the separation of the Koreas as result of Korean War and the Japanese invasion of China during the World War II. Economic connections and political cooperation in this region was minimal during the entire Cold War. Energy producing countries did not export to key consumers in the region. Russian Siberia is bestowed with huge hydrocarbon resources and serves as a large non- OPEC producer competing with OPEC.
  • Maintaining Arctic Cooperation with Russia Planning for Regional Change in the Far North

    Maintaining Arctic Cooperation with Russia Planning for Regional Change in the Far North

    Maintaining Arctic Cooperation with Russia Planning for Regional Change in the Far North Stephanie Pezard, Abbie Tingstad, Kristin Van Abel, Scott Stephenson C O R P O R A T I O N For more information on this publication, visit www.rand.org/t/RR1731 Library of Congress Cataloging-in-Publication Data is available for this publication. ISBN: 978-0-8330-9745-3 Published by the RAND Corporation, Santa Monica, Calif. © Copyright 2017 RAND Corporation R® is a registered trademark. Cover: NASA/Operation Ice Bridge. Limited Print and Electronic Distribution Rights This document and trademark(s) contained herein are protected by law. This representation of RAND intellectual property is provided for noncommercial use only. Unauthorized posting of this publication online is prohibited. Permission is given to duplicate this document for personal use only, as long as it is unaltered and complete. Permission is required from RAND to reproduce, or reuse in another form, any of its research documents for commercial use. For information on reprint and linking permissions, please visit www.rand.org/pubs/permissions. The RAND Corporation is a research organization that develops solutions to public policy challenges to help make communities throughout the world safer and more secure, healthier and more prosperous. RAND is nonprofit, nonpartisan, and committed to the public interest. RAND’s publications do not necessarily reflect the opinions of its research clients and sponsors. Support RAND Make a tax-deductible charitable contribution at www.rand.org/giving/contribute www.rand.org Preface Despite a period of generally heightened tensions between Russia and the West, cooperation on Arctic affairs—particularly through the Arctic Council—has remained largely intact, with the exception of direct mil- itary-to-military cooperation in the region.
  • Hymenoptera, Vespidae, Eumeninae) from Russia, with Description of a New Species of Stenodynerus De Saussure, 1863

    Hymenoptera, Vespidae, Eumeninae) from Russia, with Description of a New Species of Stenodynerus De Saussure, 1863

    JHR 79: 89–109 (2020) doi: 10.3897/jhr.79.57887 RESEARCH ARTICLE https://jhr.pensoft.net New records of eumenine wasps (Hymenoptera, Vespidae, Eumeninae) from Russia, with description of a new species of Stenodynerus de Saussure, 1863 Alexander V. Fateryga1, Maxim Yu. Proshchalykin2, Denis N. Kochetkov3, Batchuluun Buyanjargal4 1 T.I. Vyazemsky Karadag Scientific Station – Nature Reserve of RAS – Branch of A.O. Kovalevsky Institute of Biology of the Southern Seas of RAS, Kurortnoye 298188, Feodosiya, Russia 2 Federal Scientific Center of the East Asia Terrestrial Biodiversity, Far East Branch of the Russian Academy of Sciences, Vladivostok 690022, Russia 3 Khingan State Nature Reserve, Arkhara 676740, Russia 4 Institute of General and Experimental Biology, Mongolian Academy of Sciences, Ulaanbaatar 210351, Mongolia Corresponding author: Maxim Yu. Proshchalykin ([email protected]) Academic editor: Michael Ohl | Received 22 August 2020 | Accepted 7 October 2020 | Published 30 October 2020 http://zoobank.org/2C9F2068-B708-4AF4-92B4-1AA28B2070A3 Citation: Fateryga AV, Proshchalykin MYu, Kochetkov DN, Buyanjargal B (2020) New records of eumenine wasps (Hymenoptera, Vespidae, Eumeninae) from Russia, with description of a new species of Stenodynerus de Saussure, 1863. Journal of Hymenoptera Research 79: 89–109. https://doi.org/10.3897/jhr.79.57887 Abstract New additions to the knowledge of the subfamily Eumeninae in Russia are provided. Stenodynerus rossicus Fateryga & Kochetkov, sp. nov. is described from Amurskaya Province and Altai Republic. Three species of eumenine wasps are reported from Russia for the first time:Onychopterocheilus kiritshenkoi (Kostylev, 1940), Pterocheilus quaesitus (Morawitz, 1895), and Stenodynerus chitgarensis Giordani Soika, 1970. An- cistrocerus dusmetiolus (Strand, 1914) is excluded from the fauna of Russia; the previous records of this species were based on a misidentification of another similar species, i.
  • Crustal Architecture of the East Siberian Arctic Shelf and Adjacent Arctic Ocean Constrained by Seismic Data and Gravity Modeling Results

    Crustal Architecture of the East Siberian Arctic Shelf and Adjacent Arctic Ocean Constrained by Seismic Data and Gravity Modeling Results

    This is a repository copy of Crustal architecture of the East Siberian Arctic Shelf and adjacent Arctic Ocean constrained by seismic data and gravity modeling results. White Rose Research Online URL for this paper: http://eprints.whiterose.ac.uk/129730/ Version: Accepted Version Article: Drachev, SS, Mazur, S, Campbell, S et al. (2 more authors) (2018) Crustal architecture of the East Siberian Arctic Shelf and adjacent Arctic Ocean constrained by seismic data and gravity modeling results. Journal of Geodynamics, 119. pp. 123-148. ISSN 0264-3707 https://doi.org/10.1016/j.jog.2018.03.005 Crown Copyright © 2018 Published by Elsevier Ltd. This is an author produced version of a paper published in Journal of Geodynamics. Uploaded in accordance with the publisher's self-archiving policy. This manuscript version is made available under the Creative Commons CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/. Reuse This article is distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs (CC BY-NC-ND) licence. This licence only allows you to download this work and share it with others as long as you credit the authors, but you can’t change the article in any way or use it commercially. More information and the full terms of the licence here: https://creativecommons.org/licenses/ Takedown If you consider content in White Rose Research Online to be in breach of UK law, please notify us by emailing [email protected] including the URL of the record and the reason for the withdrawal request.
  • Regional Studies in Marine Science Meiobenthos of the Eastern Shelf of the Kara Sea Compared with the Meiobenthos of Other Parts

    Regional Studies in Marine Science Meiobenthos of the Eastern Shelf of the Kara Sea Compared with the Meiobenthos of Other Parts

    Regional Studies in Marine Science 24 (2018) 370–378 Contents lists available at ScienceDirect Regional Studies in Marine Science journal homepage: www.elsevier.com/locate/rsma Meiobenthos of the eastern shelf of the Kara Sea compared with the meiobenthos of other parts of the sea ∗ Daria Portnova , Alexander Polukhin Shirshov Institute of Oceanology, Russian Academy of Sciences, 36 Nahimovskiy prospekt, 117997 Moscow, Russia h i g h l i g h t s • The meiobenthos is firstly studied in the eastern part of the Kara Sea shelf and 10 meiofaunal taxa were recorded. • Meiobenthos from the eastern and central parts of the Kara Sea shelf and Yenisey estuary share taxonomic similarity. • Abundance and diversity of meiobenthos affected by the hydrodynamics conditions, type of sediment and organic matter content. article info a b s t r a c t Article history: The meiofauna was studied at 7 stations in the eastern part of the Kara Sea shelf and at the southern Received 28 April 2018 edge of the Voronin Trough. The total meiofaunal abundance was 682 ± 403 ind./10 cm2 and 10 major Received in revised form 25 September 2018 meiofaunal taxa were recorded for the eastern part of the Kara Sea. Canonical correspondence analysis Accepted 3 October 2018 indicated the depth, type of sediments and Corg content in the sediment as the main factors affecting the Available online xxxx community structure. High taxonomic similarity was recorded for the meiobenthos of the eastern and Keywords: central parts and the Yenisei River estuary. The meiobenthos abundance was significantly lower in the Kara Sea eastern part of the Kara Sea than in the central part and the Yenisei River estuary.
  • NAMMCO Sci. Pub. Vol. 4

    NAMMCO Sci. Pub. Vol. 4

    Belugas (Delphinapterus leucas) of the Barents, Kara and Laptev seas Andrei N. Boltunov and Stanislav E. Belikov All-Russian Research Institute for Nature Protection, Znamenskoe-Sadki, 113628 Moscow, Russia ABSTRACT This paper reviews published information on the white whale or beluga (Delphinapterus leucas) in- habiting the Barents, Kara and Laptev seas. Some data obtained during multi-year aerial reconnais- sance of sea ice in the Russian Arctic are also included. Ice conditions, considered one of the major factors affecting distribution of belugas, are described. The number of belugas inhabiting the Russian Arctic is unknown. Based on analysis of published and unpublished information we be- lieve that the primary summer habitats of belugas in the Western Russian Arctic lie in the area of Frants-Josef Land, in the Kara Sea and in the western Laptev Sea. Apparently most belugas winter in the Barents Sea. Although it has been suggested that a considerable number of animals winter in the Kara Sea, there is no direct evidence for this. Apparent migrations of animals are regularly ob- served at several sites: the straits of the Novaya Zemlya Archipelago, the waters north of the archi- pelago, and Vilkitskiy Strait between the Kara and Laptev seas. Calving and mating take place in summer, and the beluga mother feeds a calf for at least a year. Females mature earlier than males, and about 30% of mature females in a population are barren. Sex ratio is apparently close to 1:1. The diet of the beluga in the region includes fish and crustaceans and shows considerable spatial and temporal variations.
  • Siberian Platform: Geology and Natural Bitumen

    Siberian Platform: Geology and Natural Bitumen

    Siberian Platform: Geology and Natural Bitumen Resources By Richard F. Meyer and Philip A. Freeman U.S. Geological Survey Open-File Report 2006–1316 U.S. Department of the Interior U.S. Geological Survey U.S. Department of the Interior Dirk Kempthorne, Secretary U.S. Geological Survey Mark Myers, Director U.S. Geological Survey, Reston, Virginia 2006 For product and ordering information: World Wide Web: http://www.usgs.gov/pubprod Telephone: 1-888-ASK-USGS For more information on the USGS—the Federal source for science about the Earth, its natural and living resources, natural hazards, and the environment: World Wide Web: http://www.usgs.gov Telephone: 1-888-ASK-USGS Suggested citation: Meyer, R.F., Freeman, P.A., 2006, Siberian platform: Geology and natural bitumen resources: U.S. Geological Survey Open-File Report 2006-1316, available online at http://pubs.usgs.gov/of/2006/1316/. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Although this report is in the public domain, permission must be secured from the individual copyright owners to reproduce any copyrighted material contained within this report. CONTENTS Summary 1 Introduction 1 Geology 2 Resources 6 References 11 ILLUSTRATIONS Figure 1. Sedimentary basins of the Siberian Platform, Russia 23 TABLES Table 1. Siberian Platform name equivalents 19 Table 2. Bitumen resources of Siberian Platform 20 Table 3. Oil fields of the Siberian Platform 22 i Siberian Platform: Geology and Natural Bitumen Resources Richard F. Meyer and Philip A. Freeman Summary: The Siberian platform is located between the Yenisey River on the west and the Lena River on the south and east.