GLORIA

GEOMAR Library Ocean Research Information Access

X
feed icon rss

Ihre E-Mail wurde erfolgreich gesendet. Bitte prüfen Sie Ihren Maileingang.

Leider ist ein Fehler beim E-Mail-Versand aufgetreten. Bitte versuchen Sie es erneut.

Vorgang fortführen?

Exportieren
Filter
  • 2020-2022  (5)
  • 2015-2019  (29)
Publikationsart
Schlagwörter
Verlag/Herausgeber
Erscheinungszeitraum
Jahr
  • 1
    facet.materialart.
    Unbekannt
    Circulation in the northwest Laptev Sea in the eastern Arctic Ocean: Crossroads between Siberian River water, Atlantic water and polynya-formed dense water (2017)
    AGU (American Geophysical Union) | Wiley
    In:  Journal of Geophysical Research: Oceans, 122 (8). pp. 6630-6647.
    Details
    Publikationsdatum: 2020-02-06
    Beschreibung: This paper investigates new observations from the poorly understood region between the Kara and Laptev Seas in the Eastern Arctic Ocean. We discuss relevant circulation features including riverine freshwater, Atlantic-derived water, and polynya-formed dense water, emphasize Vilkitsky Strait (VS) as an important Kara Sea gateway, and analyze the role of the adjacent ∼250 km-long submarine Vilkitsky Trough (VT) for the Arctic boundary current. Expeditions in 2013 and 2014 operated closely spaced hydrographic transects and 1 year-long oceanographic mooring near VT's southern slope, and found persistent annually averaged flow of 0.2 m s−1 toward the Nansen Basin. The flow is nearly barotropic from winter through early summer and becomes surface intensified with maximum velocities of 0.35 m s−1 from August to October. Thermal wind shear is maximal above the southern flank at ∼30 m depth, in agreement with basinward flow above VT's southern slope. The subsurface features a steep front separating warm (–0.5°C) Atlantic-derived waters in central VT from cold (〈–1.5°C) shelf waters, which episodically migrates across the trough indicated by current reversals and temperature fluctuations. Shelf-transformed waters dominate above VT's slope, measuring near-freezing temperatures throughout the water column at salinities of 34–35. These dense waters are vigorously advected toward the Eurasian Basin and characterize VT as a conduit for near-freezing waters that could potentially supply the Arctic Ocean's lower halocline, cool Atlantic water, and ventilate the deeper Arctic Ocean. Our observations from the northwest Laptev Sea highlight a topographically complex region with swift currents, several water masses, narrow fronts, polynyas, and topographically channeled storms.
    Materialart: Article , PeerReviewed
    Format: text
    DOI: 10.1002/2017JC013159
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    OceanRep: Artikel in einer Fachzeitschrift - begutachtet
  • 2
    facet.materialart.
    Unbekannt
    Oceanographic and demographic mechanisms affecting population structure of snow crabs in the northern Bering Sea (2015)
    Inter Research
    In:  Marine Ecology Progress Series, 518 . pp. 193-208.
    Details
    Publikationsdatum: 2019-01-01
    Beschreibung: Snow crabs Chionoecetes opilio are quite productive at suitable temperatures, but can also be abundant in water cold enough to depress settlement of larvae, growth, and reproduction. In much of the northern Bering Sea, bottom water temperatures are below -1°C for most or all of the year. Crab pelagic larvae prefer to settle at temperatures above 0°C, so we found high densities of juveniles only where intruding warm currents deposited larvae in localized areas. After settlement, maturing crabs appeared to exhibit ontogenetic migration toward deeper, warmer water. Cold temperatures excluded key predators, but decreased fecundity by restricting females to small body size (with associated small clutches) and to breeding every 2 yr. Migration to warmer water may allow females to breed annually and to encounter more adult males needed to fertilize subsequent clutches. Because older males also emigrate, remaining adolescent males probably inseminate newly maturing females. Without localized intrusion of warmer currents, snow crabs might not persist at high densities in such cold waters. However, they are currently very abundant, and export many pelagic larvae and adults.
    Materialart: Article , PeerReviewed
    Format: text
    DOI: 10.3354/meps11042
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    OceanRep: Artikel in einer Fachzeitschrift - begutachtet
  • 3
    facet.materialart.
    Unbekannt
    Kara Sea freshwater transport through Vilkitsky Strait: Variability, forcing, and further pathways toward the western Arctic Ocean from a model and observations (2015)
    AGU (American Geophysical Union) | Wiley
    In:  Journal of Geophysical Research: Oceans, 120 (7). pp. 4925-4944.
    Details
    Publikationsdatum: 2019-09-23
    Beschreibung: Siberian river water is a first-order contribution to the Arctic freshwater budget, with the Ob, Yenisey, and Lena supplying nearly half of the total surface freshwater flux. However, few details are known regarding where, when, and how the freshwater transverses the vast Siberian shelf seas. This paper investigates the mechanism, variability, and pathways of the fresh Kara Sea outflow through Vilkitsky Strait toward the Laptev Sea. We utilize a high-resolution ocean model and recent shipboard observations to characterize the freshwater-laden Vilkitsky Strait Current (VSC), and shed new light on the little-studied region between the Kara and Laptev Seas, characterized by harsh ice conditions, contrasting water masses, straits, and a large submarine canyon. The VSC is 10-20 km wide, surface intensified, and varies seasonally (maximum from August to March) and interannually. Average freshwater (volume) transport is 500 ± 120 km3 a-1 (0.53 ± 0.08 Sv), with a baroclinic flow contribution of 50-90%. Interannual transport variability is explained by a storage-release mechanism, where blocking-favorable summer winds hamper the outflow and cause accumulation of freshwater in the Kara Sea. The year following a blocking event is characterized by enhanced transports driven by a baroclinic flow along the coast that is set up by increased freshwater volumes. Eventually, the VSC merges with a slope current and provides a major pathway for Eurasian river water toward the western Arctic along the Eurasian continental slope. Kara (and Laptev) Sea freshwater transport is not correlated with the Arctic Oscillation, but rather driven by regional summer pressure patterns.
    Materialart: Article , PeerReviewed
    Format: text
    DOI: 10.1002/2014JC010635
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    OceanRep: Artikel in einer Fachzeitschrift - begutachtet
  • 4
    facet.materialart.
    Unbekannt
    Assessing the Influence of Water Constituents on the Radiative Heating of Laptev Sea Shelf Waters (2019)
    Frontiers
    In:  Frontiers in Marine Science, 6 (221).
    Details
    Publikationsdatum: 2022-01-31
    Beschreibung: The presence of optically active water constituents is known to attenuate the light penetration in the ocean and impact the ocean heat content. Here, we investigate the influence of colored dissolved organic matter (CDOM) and total suspended matter (TSM) on the radiative heating of the Laptev Sea shelf waters. The Laptev Sea region is heavily influenced by the Lena River, one of the largest river systems in the Arctic region. We simulate the radiative heating by using a coupled atmosphere-ocean radiative transfer model (RTM) and in situ measurements from the TRANSDRIFT XVII expedition carried out in September 2010. The results indicate that CDOM and TSM have significant influence on the energy budget of the Laptev Sea shelf waters, absorbing most of the solar energy in the first 2 m of the water column. In the station with the highest CDOM absorption (aCDOM(443) = 1.77 m−1) ~43% more energy is absorbed in the surface layer compared to the station with the lowest aCDOM(443) (~0.2 m−1), which translates to an increased radiative heating of ~0.6°C/day. The increased absorbed energy by the water constituents also implies increased sea ice melt rate and changes in the surface heat fluxes to the atmosphere. By using satellite remote sensing and RTM we quantify the spatial distribution of the radiative heating in the Laptev Sea for a typical summer day. The combined use of satellite remote sensing, RT modeling and in situ observations can be used to improve parameterization schemes in atmosphere-ocean circulation models to assess the role of the ocean in the effect of Arctic amplification.
    Materialart: Article , PeerReviewed
    Format: text
    DOI: 10.3389/fmars.2019.00221
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    OceanRep: Artikel in einer Fachzeitschrift - begutachtet
  • 5
    facet.materialart.
    Unbekannt
    Daily mean sea ice draft from moored Upward-Looking Sonar ULS_Taymyr_1415 in the Laptev Sea (2019)
    PANGAEA
    Details
    Publikationsdatum: 2023-03-16
    Schlagwort(e): 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
    Materialart: Dataset
    Format: text/tab-separated-values, 239 data points
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    DATA PANGAEA
  • 6
    facet.materialart.
    Unbekannt
    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
    Publikationsdatum: 2023-03-16
    Beschreibung: 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.
    Schlagwort(e): 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
    Materialart: Dataset
    Format: text/tab-separated-values, 24 data points
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    DATA PANGAEA
  • 7
    facet.materialart.
    Unbekannt
    Underway CTD measurements during Akademik Tryoshnikov cruise AT2018 to the Arctic Ocean (2019)
    PANGAEA
    Details
    Publikationsdatum: 2023-03-16
    Beschreibung: 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.
    Schlagwort(e): 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
    Materialart: Dataset
    Format: text/tab-separated-values, 84081 data points
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    DATA PANGAEA
  • 8
    facet.materialart.
    Unbekannt
    Underway CTD measurements during POLARSTERN cruise PS111 (2018)
    PANGAEA
    In:  Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven
    Details
    Publikationsdatum: 2023-03-16
    Beschreibung: In January 2018, RV Polarstern crossed the Maud Rise region during the transit from Capetown, South Africa to the Neumayer III research station as part of the PS111-expedition. A few months before the expedition, the region featured the strongest occurrence of the "Maud Rise polynya" in four decades. During the crossing toward Neumayer III, CTD measurements were carried out by use of an underwayCTD system, which allows hydrographic sampling while the ship is in transit. A total of 23 stations between 60°S and 69°S were occupied to a depth of ~600 m.
    Schlagwort(e): ANT-XXXIII/2; AWI_PhyOce; CTD, underway; CTD-UW; DATE/TIME; DEPTH, water; Event label; LATITUDE; Lazarev Sea; LONGITUDE; Physical Oceanography @ AWI; Polarstern; Pressure, water; PS111; PS111_6-1; PS111_6-10; PS111_6-11; PS111_6-12; PS111_6-13; PS111_6-14; PS111_6-15; PS111_6-16; PS111_6-17; PS111_6-18; PS111_6-19; PS111_6-2; PS111_6-20; PS111_6-21; PS111_6-22; PS111_6-23; PS111_6-3; PS111_6-4; PS111_6-5; PS111_6-6; PS111_6-7; PS111_6-8; PS111_6-9; Salinity; South Atlantic Ocean; Temperature, water; UnderwayCTD (UCTD), Oceanscience; Weddell Sea
    Materialart: Dataset
    Format: text/tab-separated-values, 38361 data points
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    DATA PANGAEA
  • 9
    facet.materialart.
    Unbekannt
    Daily mean sea ice draft from moored Upward-Looking Sonars in the Laptev Sea between 2013 and 2015 (2019)
    PANGAEA
    Details
    Publikationsdatum: 2023-03-16
    Beschreibung: Within the framework of the Russian-German BMBF-funded TRANSDRIFT project moored Upward-Looking Sonars (ULSs) were deployed in the Laptev Sea between 2013 and 2015. Two ULS of the type Ice Profiling Sonar 5 (420 kHz, manufactured by ASL Environmental Sciences) were deployed at the 1893 and Taymyr stations in September 2013. During a Russian expedition in September 2014 both moorings were recovered and redeployed at the two station until September 2015. The four labels (ULS_1893_1314, ULS_Taymyr_1314, ULS_1893_1415 and ULS_Taymyr_1415) are named to indicate the Location of the deployment (station name) and the sampling period. Each dataset contains values of daily averaged sea ice draft (in m). The deployment sheets are attached as well.
    Schlagwort(e): AWI_SeaIce; Laptev Sea; Laptev Sea System; LSS; sea ice draft; Sea Ice Physics @ AWI; ULS
    Materialart: Dataset
    Format: application/zip, 4 datasets
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    DATA PANGAEA
  • 10
    facet.materialart.
    Unbekannt
    Daily mean sea ice draft from moored Upward-Looking Sonar ULS_1893_1415 in the Laptev Sea (2019)
    PANGAEA
    Details
    Publikationsdatum: 2023-03-16
    Schlagwort(e): 1893-T1-14_ULS; 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; Transdrift-XXII; ULS; ULS_1893_1415; Upward looking sonar; Upward looking sonar (ULS); VB14; Viktor Buynitskiy
    Materialart: Dataset
    Format: text/tab-separated-values, 253 data points
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    DATA PANGAEA
Schließen ⊗
Diese Webseite nutzt Cookies und das Analyse-Tool Matomo. Weitere Informationen finden Sie hier...