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  • 1
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    CTD data from the SWERUS-C3 expedition 2014 in the Arctic Ocean (2017)
    PANGAEA
    In:  Supplement to: Björk, Göran; Jakobsson, Martin; Assmann, Karen M; Andersson, Leif; Nilsson, Johan; Stranne, Christian; Mayer, Larry (2018): Bathymetry and oceanic flow structure at two deep passages crossing the Lomonosov Ridge. Ocean Science, 14(1), 1-13, https://doi.org/10.5194/os-14-1-2018
    Details
    Publication Date: 2023-11-24
    Description: The data set includes CTD data from the SWERUS-C3 (Swedish-Russian-US Arctic Ocean Investigation of Climate-Cryosphere-Carbon Interactions) expedition in 2014 with Swedish icebreaker (IB) Oden. The data was taken August 15 - September 25, 2014 and includes 155 CTD stations mainly located along the Siberian shelf and slope. Parameters in the data file are pressure (dbar), temperature (degC), salinity (PSU), oxygen concentration (µmol/kg) and turbidity (Volts). The quality flags are according to the WHP CTD data quality codes: 1. Not calibrated, 2. Acceptable measurement, 3. Questionable measurement, 4. Bad measurement, 5. Not reported, 6. Interpolated over 〉2 dbar interval, 7. Despiked, 8. Not assigned for CTD data, 9. Not sampled.
    Keywords: 77DN20140705; 77DN20140705/1; 77DN20140705/10; 77DN20140705/100; 77DN20140705/101; 77DN20140705/102; 77DN20140705/103; 77DN20140705/104; 77DN20140705/105; 77DN20140705/106; 77DN20140705/107; 77DN20140705/108; 77DN20140705/109; 77DN20140705/11; 77DN20140705/110; 77DN20140705/111; 77DN20140705/112; 77DN20140705/113; 77DN20140705/114; 77DN20140705/115; 77DN20140705/116; 77DN20140705/117; 77DN20140705/118; 77DN20140705/119; 77DN20140705/12; 77DN20140705/120; 77DN20140705/121; 77DN20140705/122; 77DN20140705/123; 77DN20140705/124; 77DN20140705/125; 77DN20140705/126; 77DN20140705/127; 77DN20140705/128; 77DN20140705/129; 77DN20140705/13; 77DN20140705/130; 77DN20140705/131; 77DN20140705/132; 77DN20140705/133; 77DN20140705/134; 77DN20140705/135; 77DN20140705/136; 77DN20140705/137; 77DN20140705/138; 77DN20140705/139; 77DN20140705/14; 77DN20140705/140; 77DN20140705/141; 77DN20140705/142; 77DN20140705/143; 77DN20140705/144; 77DN20140705/145; 77DN20140705/146; 77DN20140705/147; 77DN20140705/148; 77DN20140705/149; 77DN20140705/15; 77DN20140705/150; 77DN20140705/151; 77DN20140705/152; 77DN20140705/153; 77DN20140705/154; 77DN20140705/155; 77DN20140705/16; 77DN20140705/17; 77DN20140705/18; 77DN20140705/19; 77DN20140705/20; 77DN20140705/21; 77DN20140705/22; 77DN20140705/23; 77DN20140705/24; 77DN20140705/25; 77DN20140705/26; 77DN20140705/27; 77DN20140705/28; 77DN20140705/29; 77DN20140705/30; 77DN20140705/31; 77DN20140705/33; 77DN20140705/34; 77DN20140705/35; 77DN20140705/36; 77DN20140705/37; 77DN20140705/38; 77DN20140705/39; 77DN20140705/4; 77DN20140705/40; 77DN20140705/41; 77DN20140705/42; 77DN20140705/43; 77DN20140705/44; 77DN20140705/45; 77DN20140705/46; 77DN20140705/47; 77DN20140705/48; 77DN20140705/49; 77DN20140705/5; 77DN20140705/50; 77DN20140705/51; 77DN20140705/52; 77DN20140705/53; 77DN20140705/54; 77DN20140705/55; 77DN20140705/56; 77DN20140705/57; 77DN20140705/58; 77DN20140705/59; 77DN20140705/6; 77DN20140705/60; 77DN20140705/62; 77DN20140705/63; 77DN20140705/64; 77DN20140705/65; 77DN20140705/66; 77DN20140705/67; 77DN20140705/68; 77DN20140705/69; 77DN20140705/7; 77DN20140705/70; 77DN20140705/71; 77DN20140705/72; 77DN20140705/73; 77DN20140705/74; 77DN20140705/75; 77DN20140705/76; 77DN20140705/77; 77DN20140705/78; 77DN20140705/79; 77DN20140705/8; 77DN20140705/80; 77DN20140705/81; 77DN20140705/82; 77DN20140705/83; 77DN20140705/84; 77DN20140705/85; 77DN20140705/86; 77DN20140705/87; 77DN20140705/88; 77DN20140705/89; 77DN20140705/9; 77DN20140705/90; 77DN20140705/91; 77DN20140705/92; 77DN20140705/93; 77DN20140705/94; 77DN20140705/95; 77DN20140705/96; 77DN20140705/97; 77DN20140705/98; 77DN20140705/99; Arctic Ocean; Campaign; CTD/Rosette; CTD-RO; DATE/TIME; DEPTH, water; East Siberian Sea; ELEVATION; Laptev Sea; LATITUDE; LONGITUDE; Oden; Oxygen; Pressure, water; Quality flag; Salinity; Station label; SWERUS_C3_Leg1/1; SWERUS_C3_Leg1/10; SWERUS_C3_Leg1/100; SWERUS_C3_Leg1/101; SWERUS_C3_Leg1/102; SWERUS_C3_Leg1/103; SWERUS_C3_Leg1/104; SWERUS_C3_Leg1/105; SWERUS_C3_Leg1/106; SWERUS_C3_Leg1/107; SWERUS_C3_Leg1/108; SWERUS_C3_Leg1/109; SWERUS_C3_Leg1/11; SWERUS_C3_Leg1/110; SWERUS_C3_Leg1/111; SWERUS_C3_Leg1/112; SWERUS_C3_Leg1/113; SWERUS_C3_Leg1/114; SWERUS_C3_Leg1/115; SWERUS_C3_Leg1/116; SWERUS_C3_Leg1/117; SWERUS_C3_Leg1/118; SWERUS_C3_Leg1/119; SWERUS_C3_Leg1/12; SWERUS_C3_Leg1/120; SWERUS_C3_Leg1/121; SWERUS_C3_Leg1/122; SWERUS_C3_Leg1/123; SWERUS_C3_Leg1/124; SWERUS_C3_Leg1/125; SWERUS_C3_Leg1/126; SWERUS_C3_Leg1/127; SWERUS_C3_Leg1/128; SWERUS_C3_Leg1/129; SWERUS_C3_Leg1/13; SWERUS_C3_Leg1/130; SWERUS_C3_Leg1/131; SWERUS_C3_Leg1/132; SWERUS_C3_Leg1/133; SWERUS_C3_Leg1/134; SWERUS_C3_Leg1/135; SWERUS_C3_Leg1/136; SWERUS_C3_Leg1/137; SWERUS_C3_Leg1/138; SWERUS_C3_Leg1/139; SWERUS_C3_Leg1/14; SWERUS_C3_Leg1/140; SWERUS_C3_Leg1/141; SWERUS_C3_Leg1/142; SWERUS_C3_Leg1/143; SWERUS_C3_Leg1/144; SWERUS_C3_Leg1/145; SWERUS_C3_Leg1/146; SWERUS_C3_Leg1/147; SWERUS_C3_Leg1/148; SWERUS_C3_Leg1/149; SWERUS_C3_Leg1/15; SWERUS_C3_Leg1/150; SWERUS_C3_Leg1/151; SWERUS_C3_Leg1/152; SWERUS_C3_Leg1/153; SWERUS_C3_Leg1/154; SWERUS_C3_Leg1/155; SWERUS_C3_Leg1/16; SWERUS_C3_Leg1/17; SWERUS_C3_Leg1/18; SWERUS_C3_Leg1/19; SWERUS_C3_Leg1/20; SWERUS_C3_Leg1/21; SWERUS_C3_Leg1/22; SWERUS_C3_Leg1/23; SWERUS_C3_Leg1/24; SWERUS_C3_Leg1/25; SWERUS_C3_Leg1/26; SWERUS_C3_Leg1/27; SWERUS_C3_Leg1/28; SWERUS_C3_Leg1/29; SWERUS_C3_Leg1/30; SWERUS_C3_Leg1/31; SWERUS_C3_Leg1/33; SWERUS_C3_Leg1/34; SWERUS_C3_Leg1/35; SWERUS_C3_Leg1/36; SWERUS_C3_Leg1/37; SWERUS_C3_Leg1/38; SWERUS_C3_Leg1/39; SWERUS_C3_Leg1/4; SWERUS_C3_Leg1/40; SWERUS_C3_Leg1/41; SWERUS_C3_Leg1/42; SWERUS_C3_Leg1/43; SWERUS_C3_Leg1/44; SWERUS_C3_Leg1/45; SWERUS_C3_Leg1/46; SWERUS_C3_Leg1/47; SWERUS_C3_Leg1/48; SWERUS_C3_Leg1/49; SWERUS_C3_Leg1/5; SWERUS_C3_Leg1/50; SWERUS_C3_Leg1/51; SWERUS_C3_Leg1/52; SWERUS_C3_Leg1/53; SWERUS_C3_Leg1/54; SWERUS_C3_Leg1/55; SWERUS_C3_Leg1/56; SWERUS_C3_Leg1/57; SWERUS_C3_Leg1/58; SWERUS_C3_Leg1/59; SWERUS_C3_Leg1/6; SWERUS_C3_Leg1/60; SWERUS_C3_Leg1/62; SWERUS_C3_Leg1/63; SWERUS_C3_Leg1/64; SWERUS_C3_Leg1/65; SWERUS_C3_Leg1/66; SWERUS_C3_Leg1/67; SWERUS_C3_Leg1/68; SWERUS_C3_Leg1/69; SWERUS_C3_Leg1/7; SWERUS_C3_Leg1/70; SWERUS_C3_Leg1/71; SWERUS_C3_Leg1/72; SWERUS_C3_Leg1/73; SWERUS_C3_Leg1/74; SWERUS_C3_Leg1/75; SWERUS_C3_Leg1/76; SWERUS_C3_Leg1/77; SWERUS_C3_Leg1/78; SWERUS_C3_Leg1/79; SWERUS_C3_Leg1/8; SWERUS_C3_Leg1/80; SWERUS_C3_Leg1/81; SWERUS_C3_Leg1/82; SWERUS_C3_Leg1/83; SWERUS_C3_Leg1/84; SWERUS_C3_Leg1/85; SWERUS_C3_Leg1/86; SWERUS_C3_Leg1/87; SWERUS_C3_Leg1/88; SWERUS_C3_Leg1/89; SWERUS_C3_Leg1/9; SWERUS_C3_Leg1/90; SWERUS_C3_Leg1/91; SWERUS_C3_Leg1/92; SWERUS_C3_Leg1/93; SWERUS_C3_Leg1/94; SWERUS_C3_Leg1/95; SWERUS_C3_Leg1/96; SWERUS_C3_Leg1/97; SWERUS_C3_Leg1/98; SWERUS_C3_Leg1/99; SWERUS-C3; Temperature, water; Turbidity; Type
    Type: Dataset
    Format: text/tab-separated-values, 1167738 data points
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    DATA PANGAEA
  • 2
    Electronic Resource
    Electronic Resource
    Upper layer circulation of the Nordic seas as inferred from the spatial distribution of heat and freshwater content and potential energy (2001)
    Oxford, UK : Blackwell Publishing Ltd
    Polar research 20 (2001), S. 0 
    Details
    ISSN: 1751-8369
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geography , Geosciences
    Notes: The spatial distribution of heat and freshwater content and potential energy of a several hundred metre thick surface layer are computed for the Nordic seas and adjacent parts of the northern North Atlantic and the Arctic Ocean using a total of almost 100 000 hydrographic stations. The fields clearly show the major features of the area's circulation, with warm salty water in the eastern part and fresher, colder water in the western part. Comparisons with published estimates show that the potential energy field, representing the baroclinic part of the flow, accounts for about 30 % of the total flow but roughly 100 % of the flow of Polar Water in the northern part of the East Greenland Current, about 50 % of the total flow in the Norwegian Atlantic Current, and just a small fraction of the flow in the eastern part of Fram Strait. This suggests that the barotropic circulation is quite important in many parts of the Nordic seas. The barotropic circulation is also clearly seen by its effects on the integrated fields with isolines following deep bathymetric contours. We speculate that the barotropic circulation in combination with topographic obstacles, like the Greenland–Scotland Ridge and the ridge system in the Jan Mayen area, may have large impact on the spreading of freshwater and heat in the Nordic seas.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1751-8369.2001.tb00052.x
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    Paper (German National Licenses)
    Fulltext
  • 3
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    Liquid freshwater transport and Polar Surface Water characteristics in the East Greenland Current during the AO-02 Oden expedition (2008)
    Elsevier
    Details
    Publication Date: 2008-07-01
    Print ISSN: 0079-6611
    Electronic ISSN: 1873-4472
    Topics: Geosciences , Physics
    Published by Elsevier
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    PAPER CURRENT
  • 4
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    On the nature and origin of water masses in Herald Canyon, Chukchi Sea: Synoptic surveys in summer 2004, 2008, and 2009 (2017)
    Elsevier
    Details
    Publication Date: 2017-12-01
    Print ISSN: 0079-6611
    Electronic ISSN: 1873-4472
    Topics: Geosciences , Physics
    Published by Elsevier
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  • 5
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    Neodymium isotopes in seawater from the Barents Sea and Fram Strait Arctic–Atlantic gateways (2008)
    Elsevier
    Details
    Publication Date: 2008-06-01
    Print ISSN: 0016-7037
    Electronic ISSN: 1872-9533
    Topics: Chemistry and Pharmacology , Geosciences
    Published by Elsevier
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  • 6
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    The distribution of neodymium isotopes in Arctic Ocean basins (2009)
    Elsevier
    Details
    Publication Date: 2009-05-01
    Print ISSN: 0016-7037
    Electronic ISSN: 1872-9533
    Topics: Chemistry and Pharmacology , Geosciences
    Published by Elsevier
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  • 7
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    An Arctic Ocean ice shelf during MIS 6 constrained by new geophysical and geological data (2010)
    Elsevier
    Details
    Publication Date: 2010-12-01
    Print ISSN: 0277-3791
    Electronic ISSN: 1873-457X
    Topics: Geography , Geosciences
    Published by Elsevier
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  • 8
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    Post-glacial flooding of the Bering Land Bridge dated to 11 cal ka BP based on new geophysical and sediment records (2017)
    Copernicus
    Details
    Publication Date: 2017-08-01
    Description: The Bering Strait connects the Arctic and Pacific oceans and separates the North American and Asian landmasses. The presently shallow ( ∼  53 m) strait was exposed during the sea level lowstand of the last glacial period, which permitted human migration across a land bridge today referred to as the Bering Land Bridge. Proxy studies (stable isotope composition of foraminifera, whale migration into the Arctic Ocean, mollusc and insect fossils and paleobotanical data) have suggested a range of ages for the Bering Strait reopening, mainly falling within the Younger Dryas stadial (12.9–11.7 cal ka BP). Here we provide new information on the deglacial and post-glacial evolution of the Arctic–Pacific connection through the Bering Strait based on analyses of geological and geophysical data from Herald Canyon, located north of the Bering Strait on the Chukchi Sea shelf region in the western Arctic Ocean. Our results suggest an initial opening at about 11 cal ka BP in the earliest Holocene, which is later than in several previous studies. Our key evidence is based on a well-dated core from Herald Canyon, in which a shift from a near-shore environment to a Pacific-influenced open marine setting at around 11 cal ka BP is observed. The shift corresponds to meltwater pulse 1b (MWP1b) and is interpreted to signify relatively rapid breaching of the Bering Strait and the submergence of the large Bering Land Bridge. Although the precise rates of sea level rise cannot be quantified, our new results suggest that the late deglacial sea level rise was rapid and occurred after the end of the Younger Dryas stadial.
    Print ISSN: 1814-9324
    Electronic ISSN: 1814-9332
    Topics: Geosciences
    Published by Copernicus on behalf of European Geosciences Union.
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  • 9
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    Shelf–Basin interaction along the East Siberian Sea (2017)
    Copernicus
    Details
    Publication Date: 2017-04-27
    Description: Extensive biogeochemical transformation of organic matter takes place in the shallow continental shelf seas of Siberia. This, in combination with brine production from sea-ice formation, results in cold bottom waters with relatively high salinity and nutrient concentrations, as well as low oxygen and pH levels. Data from the SWERUS-C3 expedition with icebreaker Oden, from July to September 2014, show the distribution of such nutrient-rich, cold bottom waters along the continental margin from about 140 to 180° E. The water with maximum nutrient concentration, classically named the upper halocline, is absent over the Lomonosov Ridge at 140° E, while it appears in the Makarov Basin at 150° E and intensifies further eastwards. At the intercept between the Mendeleev Ridge and the East Siberian continental shelf slope, the nutrient maximum is still intense, but distributed across a larger depth interval. The nutrient-rich water is found here at salinities of up to ∼ 34.5, i.e. in the water classically named lower halocline. East of 170° E transient tracers show significantly less ventilated waters below about 150 m water depth. This likely results from a local isolation of waters over the Chukchi Abyssal Plain as the boundary current from the west is steered away from this area by the bathymetry of the Mendeleev Ridge. The water with salinities of ∼ 34.5 has high nutrients and low oxygen concentrations as well as low pH, typically indicating decay of organic matter. A deficit in nitrate relative to phosphate suggests that this process partly occurs under hypoxia. We conclude that the high nutrient water with salinity ∼ 34.5 are formed on the shelf slope in the Mendeleev Ridge region from interior basin water that is trapped for enough time to attain its signature through interaction with the sediment.
    Print ISSN: 1812-0784
    Electronic ISSN: 1812-0792
    Topics: Geosciences
    Published by Copernicus on behalf of European Geosciences Union.
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  • 10
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    Bathymetry and oceanic flow structure at two deep passages crossing the Lomonosov Ridge (2017)
    Copernicus
    Details
    Publication Date: 2017-04-04
    Description: The Lomonosov Ridge represents a major topographical feature in the Arctic Ocean which has a large effect on the water circulation and the distribution of water properties. This study presents detailed bathymetric survey data along with hydrographic data at two deep passages across the ridge: A southern passage (80–81° N) where the ridge crest meets the Siberian continental slope and a northern passage around 84.5° N. The southern channel is characterized by smooth and flat bathymetry around 1600–1700 m with a sill depth slightly shallower than 1700 m. A hydrographic section across the channel reveals an eastward flow with Amundsen Basin properties in the southern part and a westward flow of Makarov Basin properties in the northern part. The northern passage includes an approximately 72 km long and 33 km wide trough which forms an intra basin in the Lomonosov Ridge morphology (the Oden Trough). The eastern side of Oden Trough is enclosed by a narrow and steep ridge rising 500–600 m above a generally 1600 m deep trough bottom. The deepest passage (the sill) is 1470 m deep and located on this ridge. Hydrographic data show irregular temperature and salinity profiles indicating that water exchange occurs as midwater intrusions bringing water properties from each side of the ridge in well-defined but irregular layers. There is also morphological evidence that some rather energetic flows may occur in the vicinity of the sill. A well expressed deepening near the sill may be the result of seabed erosion by bottom currents.
    Print ISSN: 1812-0806
    Electronic ISSN: 1812-0822
    Topics: Geosciences
    Published by Copernicus on behalf of European Geosciences Union.
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