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  • PANGAEA  (19)
  • Springer  (4)
  • 2015-2019  (23)
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Keywords
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Years
Year
  • 1
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    Mechanisms of Late Pleistocene authigenic Fe–Mn-carbonate formation at the Laptev Sea continental slope (Siberian Arctic) (2018)
    Springer
    Details
    Publication Date: 2018-01-23
    Print ISSN: 2364-9453
    Electronic ISSN: 2364-9461
    Topics: Geosciences
    Published by Springer
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    PAPER CURRENT
  • 2
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    Mechanisms of Late Pleistocene authigenic Fe–Mn-carbonate formation at the Laptev Sea continental slope (Siberian Arctic) (2018)
    Springer
    In:  Arktos, 4 (Article 2).
    Details
    Publication Date: 2021-02-08
    Description: Study of the microstructure and isotopic composition of authigenic tubule-shaped carbonate concretions from sediment core PS51/154-11 on the western Laptev Sea continental slope (present water depth 270 m) has allowed for reconstruction of the conditions prevailing during their formation and identification of the mechanisms controlling their genesis. Concretions were collected from the basal sediment unit with an extrapolated age estimate of 16.3–17.6 cal.ka. Crystallization of carbonate tubules occurred at the beginning of the last deglaciation when the site was located in the proximity to the former coastline and the mouths of the Olenek and Anabar-Khatanga rivers in water depths of about 150–170 m. Microprobe analysis showed that the studied carbonate tubules consist of the minerals belonging to the siderite–rhodochrosite isomorphic series. The measured isotopic composition of δ13С and δ18O in the carbonates varies between − 21.0 and − 17.0‰ and between − 9.86 and 1.72‰ VPDB, respectively. The δ18O values in the authigenic carbonates give evidence for the gradual transition from a freshwater affected to modern-like marine sedimentation environment during carbonate crystallization. Water freshening is confirmed by the co-occurrence of authigenic Fe–Mn carbonates and Fe-phosphate vivianite that is a typical mineral of freshwater environments. The dominant source of dissolved inorganic carbon in the pore water was the isotopically light carbon derived from the diagenetic decomposition of organic matter. Two possible scenarios of authigenic carbonates formation are proposed: penetration of freshened ground waters and/or enhanced freshwater influence during short seasonal floods in combination with geochemical processes in a narrow marginal filter zone that was located extremely close to the Laptev Sea continental slope and the studied core site.
    Type: Article , PeerReviewed
    Format: text
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    PAPER (OCEANREP)
  • 3
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    Climatic Changes in the Dynamic Topography and Geostrophic Circulation of the Arctic Ocean (2018)
    Springer
    In:  Doklady Earth Sciences, 480 (1). pp. 685-688.
    Details
    Publication Date: 2021-02-08
    Description: According to historical oceanographic data, anomalies in the dynamic topography during the winter period were calculated and two climatic stages of dynamic condition of the Arctic Ocean were defined: 1949–1993 and 2007–2013. The associativity of opposition of anomalies in the dynamic topography of the Eurasian and Amerasian basins with fluctuations in the thermal condition of the Northern Atlantic and Pacific oceans, the indexes of atmospheric circulation, river runoff, and change in the area of ice in August of the Laptev, East Siberian, and Chukchi seas is established.
    Type: Article , PeerReviewed
    Format: text
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    PAPER (OCEANREP)
  • 4
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    Evolution of subsea permafrost landscapes in Arctic Siberia since the Late Pleistocene: a synoptic insight from acoustic data of the Laptev Sea (2015)
    Springer
    In:  Arktos, 1 (Article 11).
    Details
    Publication Date: 2019-07-08
    Description: Using high-resolution seismic data, this study aims at investigating the evolution and morphological diversity of subsea permafrost features on the eastern Laptev Sea shelf, Arctic Siberia. Several seismic facies were recognized. These relate to the major environmental changes, which affected the Laptev Sea area before, during, and after the last global transgression. Because this shallow shelf was part of the Beringian landmass, we consider a prominent subsurface seismic basal reflector as the top of the former terrestrial permafrost table. Five zones differing in geometry, reflection patterns, depths, and continuity of the permafrost top are identified. Where visible, the upper 70 m of the sediments consists of epigenetically and syngenetically frozen ice-poor sandy deposits at the base, possibly of early last glacial age, marine isotope stages (MIS) 5 and 4. These are followed by late glacial, ice-rich facies interpreted to be MIS 3 to 2. The early Holocene (MIS 1) features well-stratified lagoonal and taberal deposits. As verified by radiocarbon-dated sediment cores, these deposits are overlain by middle to late Holocene sediments with an increasingly marine signature.
    Type: Article , PeerReviewed
    Format: text
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    PAPER (OCEANREP)
  • 5
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    Daily mean sea ice draft from moored Upward-Looking Sonar ULS_Taymyr_1415 in the Laptev Sea (2019)
    PANGAEA
    Details
    Publication Date: 2023-03-16
    Keywords: AWI_SeaIce; DATE/TIME; Laptev Sea; Laptev Sea System; Latitude of event; Longitude of event; LSS; sea ice draft; Sea ice draft; Sea Ice Physics @ AWI; Taymyr-T1-14-ULS; Transdrift-XXII; ULS; ULS_Taymyr_1415; Upward looking sonar; Upward looking sonar (ULS); VB14; Viktor Buynitskiy
    Type: Dataset
    Format: text/tab-separated-values, 239 data points
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    DATA PANGAEA
  • 6
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    Raw bottom track error velocity and range data from moored upward-looking Acoustic Doppler Current Profilers in the Laptev Sea between 2013 and 2015 (2019)
    PANGAEA
    Details
    Publication Date: 2023-03-16
    Description: Within the framework of the Russian-German BMBF-funded TRANSDRIFT project moored upward-looking Acoustic Doppler Current Profilers (ADCPs) were deployed in the Laptev Sea between 2013 and 2015. Two upward-looking Workhorse 300 kHz Sentinel ADCPs (manufactured by Teledyne RDI) were deployed at the 1893 and Taymyr stations in September 2013. During a Russian expedition in September 2014 both moorings were recovered and partly redeployed at the two stations until September 2015 (one upward-looking ADCP was substituted in 2014). The four data sets (ADCP_BT_1893_1314.txt, ADCP_BT_Taymyr_1314.txt, ADCP_BT_1893_1415.txt and ADCP_BT_Taymyr_1415.txt) are named to indicate the location of the deployment (station name) and the sampling period. Each file contains hourly values of error velocity (in mm/s) and range (beams 1 to 4, in m) data that was recorded using the ADCPs bottom track (BT) mode. Additionally, the instruments roll and pitch values (in deg) are included. The deployment sheets are attached as well. All moorings were equipped with numerous other instruments. Their data has been published separately.
    Keywords: 1893-T1-13-ADCP; 1893-T1-14-ADCP; Acoustic Doppler Current Profiler; ADCP; ADCP_BT_1893_1314; ADCP_BT_1893_1415; ADCP_BT_Taymyr_1314; ADCP_BT_Taymyr_1415; AWI_SeaIce; bottom track; Date/Time of event; Date/Time of event 2; Event label; File content; File format; File name; File size; Laptev Sea; Laptev Sea System; Latitude of event; Longitude of event; LSS; Sea Ice Physics @ AWI; Taymyr-T1-13-ADCP; Taymyr-T1-14-ADCP; Transdrift-XXI; Transdrift-XXII; Uniform resource locator/link to file; Uniform resource locator/link to metadata file; VB13; VB14; Viktor Buynitskiy
    Type: Dataset
    Format: text/tab-separated-values, 24 data points
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    DATA PANGAEA
  • 7
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    Underway CTD measurements during Akademik Tryoshnikov cruise AT2018 to the Arctic Ocean (2019)
    PANGAEA
    Details
    Publication Date: 2023-03-16
    Description: Underway (U)CTD data were collected during an August-September 2018 expedition to the Arctic Ocean aboard the RV Akademik Tryoshnikov, and was a joint expedition between the German-Russian project CATS (Changing Arctic Transpolar System) and the US-Russian project NABOS (Nansen and Amundsen Basin Observing System). The UCTD was operated mostly in yoyo-mode during selected transects between the shelf and the basin across the continental slope of the Eurasian Basin while the ship was transiting with 8 - 14 knots. The UCTD probe records the start time of the measurements and stores 16 samples each second internally. The exact location of each profile was subsequently found based on the time stamp from the cruise track. The unpumped conductivity sensor has a slower response time than the temperature sensor, which makes the computation of salinity from conductivity and temperature potentially spiky, especially in the pycnocline or in frontal regions. We followed the recommendation of the manufacturer to calculate salinity with Seabird processing software. In shallower waters (〈200m), the water column was profiled all the way to the seafloor, while in deeper waters, only the upper 200-350m were sampled. Shipboard echo soundings were not available, actual water depths at the profile locations need to be extracted from bathymetric charts (for instance IBCAO ). The UCTD was calibrated against a Seabird 911 CTD during the cruise. Temperature measurements were comparable to the ship's CTD and remained uncorrected, the processed salinities include a salinity correction based on a deviation from the ship's CTD.
    Keywords: 1; 10; 100; 101; 102; 103; 104; 105; 106; 107; 108; 109; 11; 110; 111; 112; 113; 114; 115; 116; 117; 118; 119; 12; 120; 121; 122; 123; 124; 125; 126; 127; 128; 129; 13; 130; 131; 132; 133; 134; 135; 136; 137; 138; 139; 14; 140; 141; 142; 143; 144; 145; 146; 147; 148; 149; 15; 150; 151; 152; 153; 154; 155; 156; 157; 158; 159; 16; 160; 161; 162; 163; 164; 165; 166; 167; 168; 169; 17; 170; 171; 172; 173; 174; 175; 176; 177; 178; 179; 18; 180; 181; 182; 183; 184; 185; 19; 2; 20; 21; 22; 23; 24; 25; 26; 27; 28; 29; 3; 30; 31; 32; 33; 34; 35; 36; 37; 38; 39; 4; 40; 41; 42; 43; 44; 45; 46; 47; 48; 49; 5; 50; 51; 52; 53; 54; 55; 56; 57; 58; 59; 6; 60; 61; 62; 63; 64; 65; 66; 67; 68; 69; 7; 70; 71; 72; 73; 74; 75; 76; 77; 78; 79; 8; 80; 81; 82; 83; 84; 85; 86; 87; 88; 89; 9; 90; 91; 92; 93; 94; 95; 96; 97; 98; 99; Akademik Tryoshnikov; Arctic Ocean; AT18_005-1; AT18_005-10; AT18_005-11; AT18_005-12; AT18_005-13; AT18_005-16; AT18_005-17; AT18_005-18; AT18_005-19; AT18_005-2; AT18_005-20; AT18_005-25; AT18_005-26; AT18_005-3; AT18_005-4; AT18_005-5; AT18_005-6; AT18_005-7; AT18_005-8; AT18_005-9; AT18_010-1; AT18_010-10; AT18_010-11; AT18_010-12; AT18_010-13; AT18_010-14; AT18_010-15; AT18_010-16; AT18_010-17; AT18_010-18; AT18_010-19; AT18_010-2; AT18_010-20; AT18_010-21; AT18_010-22; AT18_010-23; AT18_010-24; AT18_010-25; AT18_010-26; AT18_010-27; AT18_010-28; AT18_010-29; AT18_010-3; AT18_010-30; AT18_010-31; AT18_010-32; AT18_010-33; AT18_010-34; AT18_010-35; AT18_010-36; AT18_010-37; AT18_010-38; AT18_010-39; AT18_010-4; AT18_010-40; AT18_010-41; AT18_010-42; AT18_010-43; AT18_010-44; AT18_010-45; AT18_010-46; AT18_010-47; AT18_010-48; AT18_010-49; AT18_010-5; AT18_010-51; AT18_010-52; AT18_010-54; AT18_010-55; AT18_010-6; AT18_010-7; AT18_010-8; AT18_010-9; AT18_015-1; AT18_015-10; AT18_015-11; AT18_015-12; AT18_015-13; AT18_015-14; AT18_015-15; AT18_015-16; AT18_015-17; AT18_015-18; AT18_015-19; AT18_015-2; AT18_015-20; AT18_015-21; AT18_015-22; AT18_015-3; AT18_015-4; AT18_015-5; AT18_015-6; AT18_015-7; AT18_015-8; AT18_015-9; AT18_019_4-1; AT18_019_4-10; AT18_019_4-11; AT18_019_4-12; AT18_019_4-13; AT18_019_4-14; AT18_019_4-15; AT18_019_4-2; AT18_019_4-3; AT18_019_4-4; AT18_019_4-5; AT18_019_4-6; AT18_019_4-7; AT18_019_4-8; AT18_019_4-9; AT18_027-1; AT18_027-10; AT18_027-11; AT18_027-12; AT18_027-13; AT18_027-14; AT18_027-15; AT18_027-16; AT18_027-17; AT18_027-18; AT18_027-19; AT18_027-2; AT18_027-20; AT18_027-21; AT18_027-22; AT18_027-23; AT18_027-24; AT18_027-25; AT18_027-26; AT18_027-27; AT18_027-28; AT18_027-29; AT18_027-3; AT18_027-30; AT18_027-31; AT18_027-32; AT18_027-33; AT18_027-34; AT18_027-35; AT18_027-36; AT18_027-37; AT18_027-4; AT18_027-5; AT18_027-6; AT18_027-7; AT18_027-8; AT18_027-9; AT18_101-1; AT18_101-10; AT18_101-11; AT18_101-12; AT18_101-13; AT18_101-14; AT18_101-15; AT18_101-16; AT18_101-17; AT18_101-18; AT18_101-19; AT18_101-2; AT18_101-20; AT18_101-21; AT18_101-22; AT18_101-23; AT18_101-24; AT18_101-25; AT18_101-26; AT18_101-27; AT18_101-28; AT18_101-29; AT18_101-3; AT18_101-30; AT18_101-31; AT18_101-32; AT18_101-33; AT18_101-34; AT18_101-35; AT18_101-36; AT18_101-37; AT18_101-38; AT18_101-4; AT18_101-5; AT18_101-6; AT18_101-7; AT18_101-8; AT18_101-9; AT2018, TICE, NABOS; AWI_PhyOce; Campaign of event; CATS; CATS - The Changing Arctic Transpolar System; CTD, underway; CTD-UW; Date/Time of event; DEPTH, water; East Siberian Sea; Event label; Laptev Sea; Latitude of event; Longitude of event; Optional event label; Physical Oceanography @ AWI; Pressure, water; Salinity; shelf-basin transects; Temperature, water; Transdrift-XXIV; underway CTD; UnderwayCTD (UCTD), Oceanscience
    Type: Dataset
    Format: text/tab-separated-values, 84081 data points
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    DATA PANGAEA
  • 8
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    Station list and links to master tracks in different resolutions of POLARSTERN cruise ARK-XIV/1b, Tiksi - Tromsø, 1998-07-28 - 1998-08-28 (2016)
    PANGAEA
    In:  Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven
    Details
    Publication Date: 2023-03-16
    Keywords: ARK-XIV/1b; Calculated; Course; CT; DATE/TIME; LATITUDE; LONGITUDE; Polarstern; PS51/1b-track; PS51 Transdrift-V; Speed; Underway cruise track measurements
    Type: Dataset
    Format: text/tab-separated-values, 6336 data points
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    DATA PANGAEA
  • 9
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    Rare earth elements measured on water bottle samples at BATS (2017)
    PANGAEA
    Details
    Publication Date: 2023-03-10
    Keywords: BATS15m; Cerium, dissolved; CTD/Rosette; CTD-RO; DEPTH, water; Dysprosium, dissolved; Erbium, dissolved; Europium, dissolved; Gadolinium, dissolved; GEOTRACES; Global marine biogeochemical cycles of trace elements and their isotopes; Holmium, dissolved; Lanthanum, dissolved; Lutetium, dissolved; Neodymium, dissolved; Praseodymium, dissolved; Samarium, dissolved; South Atlantic Ocean; Terbium, dissolved; Thulium, dissolved; Ytterbium, dissolved; Yttrium, dissolved
    Type: Dataset
    Format: text/tab-separated-values, 225 data points
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    DATA PANGAEA
  • 10
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    Rare earth elements measured on water bottle samples at BATS (2017)
    PANGAEA
    Details
    Publication Date: 2023-03-10
    Keywords: BATS2000m; Cerium, dissolved; CTD/Rosette; CTD-RO; DEPTH, water; Dysprosium, dissolved; Erbium, dissolved; Europium, dissolved; Gadolinium, dissolved; GEOTRACES; Global marine biogeochemical cycles of trace elements and their isotopes; Holmium, dissolved; Lanthanum, dissolved; Lutetium, dissolved; Neodymium, dissolved; Praseodymium, dissolved; Samarium, dissolved; South Atlantic Ocean; Terbium, dissolved; Thulium, dissolved; Ytterbium, dissolved; Yttrium, dissolved
    Type: Dataset
    Format: text/tab-separated-values, 195 data points
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    DATA PANGAEA
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