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  • 1
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    Paleoenvironment Variability during Termination I at the Reykjanes Ridge, North Atlantic (2018)
    Molecular Diversity Preservation International
    Details
    Publication Date: 2018-10-11
    Description: The micropaleontological study (radiolarians and foraminifera) of the sediment core AMK-340, Reykjanes Ridge, North Atlantic, combined with the radiocarbon dating and oxygen and carbon isotopic record, provided data for the reconstruction of the summer paleotemperature across the upper 100 meters water depth range, and paleoenvironments during the Termination I in the age interval of 14.5–8 ka. The response of the main microfossil species to the paleoceanographic changes within the Bølling-Allerød (BA) warming, the Younger Dryas (YD) cold event and final transition to the warm Holocene, was different. The BA warming was well captured by the radiolarian and benthic foraminiferal records, but not the planktic one. The high abundances of the cold-water radiolarian species Amphimelissa setosa as a Greenland/Iceland Sea indicator marked a cooling at the end of the BA and at the start of the YD at 13.2–12.3 ka. The micropaleontological and isotopic data together with the paleotemperature estimates for the Reykjanes Ridge at 60°N document that, after the warm BA, the middle YD ca. 12.5–12.2 ka was the next significant step toward the Holocene warming. The start of the Holocene interglacial conditions was reflected in large representation of the microfossils being indicators of the open boreal North Atlantic environments indicating increasing warmth.
    Electronic ISSN: 2076-3263
    Topics: Geosciences
    Published by Molecular Diversity Preservation International
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  • 2
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    Facies system of the Eastern Barents Sea since the last glaciation to present (2006)
    Elsevier
    Details
    Publication Date: 2006-08-01
    Print ISSN: 0025-3227
    Electronic ISSN: 1872-6151
    Topics: Geosciences
    Published by Elsevier
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    PAPER CURRENT
  • 3
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    Stable isotope record of foraminifera from the Barents Sea
    PANGAEA
    In:  Supplement to: Duplessy, Jean-Claude; Cortijo, Elsa; Ivanova, Elena V; Khusid, Tatyana A; Labeyrie, Laurent D; Levitan, Mikhail A; Murdmaa, Ivar O; Paterne, Martine (2005): Paleoceanography of the Barents Sea during the Holocene. Paleoceanography, 20(4), PA4004, https://doi.org/10.1029/2004PA001116
    Details
    Publication Date: 2023-05-12
    Description: We measured the oxygen isotopic composition of planktonic and benthic foraminifera in three cores collected at key positions to reconstruct the paleoceanography of the Barents Sea: core ASV 880 on the path of the northern branch of Atlantic water inflowing from the Arctic Ocean, core ASV 1200 in the central basin near the polar front, and core ASV 1157 in the main area of brine formation. Modern seawater d18O measurements show that far from the coast, d18O variations are linearly linked to the salinity changes associated with sea ice melting. The foraminifer d18O records are dated by 14C measurements performed on mollusk shells, and they provide a detailed reconstruction of the paleoceanographic evolution of the Barents Sea during the Holocene. Four main steps were recognized: the terminal phase of the deglaciation with melting of the main glaciers, which were located on the surrounding continent and islands, the short thermal optimum from 7.8 ka B.P. to 6.8 ka B.P., a cold mid-Holocene phase with a large reduction of the inflow of Atlantic water, and the inception of the modern hydrological pattern by 4.7 ka B.P. Brine water formation was active during the whole Holocene. The paleoclimatic evolution of the Barents Sea was driven by both high-latitude summer insolation and the intensity of the Atlantic water inflow.
    Type: Dataset
    Format: application/zip, 4 datasets
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    DATA PANGAEA
  • 4
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    Abundance of benthic Foraminifera in the Kara Sea
    PANGAEA
    In:  Supplement to: Khusid, Tatyana A (1996): Benthic Foraminifera assemblages in the Kara Sea. Translated from Okeanologiya, 1996, 36(5), 759-765, Oceanology, 36(5), 716-722
    Details
    Publication Date: 2023-05-12
    Description: Taxonomic composition and structure of assemblages of the present-day benthic Foraminifera in the Kara Sea has been studied on the base of 37 samples of surface sediments. Three assemblages have been distinguished by composition of dominant species. The assemblage Cribrostomoides subglobosus-Tritaxis nana with prevalence of agglutinating forms, typical for abyssal areas of the World Ocean, occurs in brown oozes in the deep western part of the sea at depths 70-375 m under conditions of considerable bottom stratification. The assemblage Elphidium clavatum-Cassidulina reniforme consists predominantly of species with calcareous shells and is characterized by a wide range of species; this assemblage occurs in the eastern part of the sea at depths 30-90 m in a well-aerated area. Species typical for sublittoral areas of polar regions are dominant. The assemblage Elphidium clavatum-Haynesina orbiculare occupies the littoral estuarine part of the sea. This assemblage is poor in species and not abundant, and it occurs under influence of freshened water masses undersaturated with dissolved carbonaceous matter.
    Keywords: Archive of Ocean Data; ARCOD; BC; Box corer; DM49; DM49-4377-1; DM49-4380-2; DM49-4381-1; DM49-4381-2; DM49-4382-4; DM49-4383-7; DM49-4383b; DM49-4384-2; DM49-4385-1; DM49-4386-7; DM49-4387-1; DM49-4388-3; DM49-4389-1; DM49-4389-2; DM49-4390-1; DM49-4391-2; DM49-4393-2; DM49-4394-2; DM49-4395-2; DM49-4397-2; DM49-4398-1; DM49-4399-1; DM49-4400-1; DM49-4401-1; DM49-4402-1; Dmitry Mendeleev; GC; Grab; GRAB; Gravity corer; Kara Sea; MULT; Multiple investigations; Professor Shtokman; PSh12; PSh12-1405; PSh12-1407; SPASIBAIII
    Type: Dataset
    Format: application/zip, 2 datasets
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    DATA PANGAEA
  • 5
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    Benthic Foraminifera in Upper Pleistocene - Holocene bottom sediments from the southeastern Sea of Okhotsk
    PANGAEA
    In:  Supplement to: Basov, Ivan A; Khusid, Tatyana A (2002): Benthic foraminiferal assemblages of the southeastern Sea of Okhotsk during the last glacial period. Translated from Okeanologiya, 2002, 42(4), 592-599, Oceanology, 42(4), 567-574
    Details
    Publication Date: 2023-05-12
    Description: A comparative analysis of benthic foraminiferal assemblages in the last glacial sediments obtained by gravity cores from the southern Kamchatka slope (Vulk-34-98) and from the eastern slope of the Akademii Nauk Rise in the central Sea of Okhotsk (Vulk-34-90) revealed, along with their undoubted similarity, substantial differences caused by hydrological regime in these areas during the considered period. It is shown that during the last glacial period bottom waters near the northern Kuril Islands were warmer and less aerated than those in the Akademii Nauk Rise area. As is evident from low-amplitude variations in proportions of dominant species, hydrological parameters in the bottom layer of the latter area at that time were relatively more stable than in the former area.
    Keywords: Archive of Ocean Data; ARCOD; GC; Gravity corer; Sea of Okhotsk; Vulk-34-90; Vulk-34-98
    Type: Dataset
    Format: application/zip, 2 datasets
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    DATA PANGAEA
  • 6
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    Living benthic foraminifers in bottom sediments of the southeastern Kandalaksha Bay (White Sea)
    PANGAEA
    In:  Supplement to: Khusid, Tatyana A; Basov, Ivan A; Korsun, S A; Korneeva, Galina A (2003): Living benthic foraminifers in bottom assemblages of the southeastern Kandalaksha Bay (White Sea) and their environment. Transated from Okeanologiya, 2003, 43(4), 566-572, Oceanology, 43(4), 535-541
    Details
    Publication Date: 2023-05-12
    Description: Analysis of composition and distribution of benthic foraminifers in six samples of bottom sediments obtained in the southeast Kandalaksha Bay of the White Sea at water depths of 20 to 155 m revealed their dependence on lithology and different hydrological characteristics. It is shown that living foraminifers populating relatively shallow areas of the bay (20-60 m), which are bathed by seasonally warmed intermediate water with temperature 0.7-1.5°C and salinity 26 per mil, are characterized by high abundance (250-750 specimens/10 ccm of wet sediment) and prevalence of agglutinated species (Eggerella advena, Recurvoides turbinatus, and others). Deeper (155 m) where cold and relatively saline deep water occurs (-1.4°C, 29.5 per mil), abundance is an order lower (30 specimens/10 ccm) and is dominated by calcareous taxa Cassidulina reniforme, an Arctic cold resistant species.
    Keywords: Archive of Ocean Data; ARCOD; Ecolog-2000-11; Ecolog-2000-12; Ecolog-2000-15; Ecolog-2000-5; Ecolog-2000-6; Ecolog-2000-9; Grab; GRAB; Kandalaksha Bay, White Sea
    Type: Dataset
    Format: application/zip, 2 datasets
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    DATA PANGAEA
  • 7
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    Abundance and biomass of benthic foraminifera in bottom sediments at Station VITYAZ6677
    PANGAEA
    Details
    Publication Date: 2023-05-12
    Keywords: Akademik Kurchatov; AKU26A; Archive of Ocean Data; ARCOD; Calculated; Counting, foraminifera, benthic; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; Foraminifera, benthic; Foraminifera, benthic, number of species; Foraminifera, benthic living; GC; Gravity corer; Sea of Okhotsk; VITYAZ6677
    Type: Dataset
    Format: text/tab-separated-values, 14 data points
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  • 8
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    Abundance and biomass of benthic foraminifera in bottom sediments at Station VITYAZ6675
    PANGAEA
    Details
    Publication Date: 2023-05-12
    Keywords: Akademik Kurchatov; AKU26A; Archive of Ocean Data; ARCOD; Calculated; Counting, foraminifera, benthic; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; Foraminifera, benthic; Foraminifera, benthic, number of species; Foraminifera, benthic living; GC; Gravity corer; Sea of Okhotsk; VITYAZ6675
    Type: Dataset
    Format: text/tab-separated-values, 14 data points
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  • 9
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    Abundance and biomass of benthic foraminifera in bottom sediments at Station VITYAZ6678
    PANGAEA
    Details
    Publication Date: 2023-05-12
    Keywords: Akademik Kurchatov; AKU26A; Archive of Ocean Data; ARCOD; Calculated; Counting, foraminifera, benthic; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; Foraminifera, benthic; Foraminifera, benthic, number of species; Foraminifera, benthic living; GC; Gravity corer; Sea of Okhotsk; VITYAZ6678
    Type: Dataset
    Format: text/tab-separated-values, 14 data points
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    DATA PANGAEA
  • 10
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    Abundance and biomass of benthic foraminifera in bottom sediments at Station VITYAZ6683
    PANGAEA
    Details
    Publication Date: 2023-05-12
    Keywords: Akademik Kurchatov; AKU26A; Archive of Ocean Data; ARCOD; Calculated; Counting, foraminifera, benthic; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; Foraminifera, benthic; Foraminifera, benthic, number of species; Foraminifera, benthic living; GC; Gravity corer; Sea of Okhotsk; VITYAZ6683
    Type: Dataset
    Format: text/tab-separated-values, 14 data points
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