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  • 2020-2024  (15)
  • 2015-2019  (2)
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  • 1
    Keywords: Report ; Hochschulschrift ; Grönlandsee ; Nannoplankton ; Picoplankton
    Type of Medium: Online Resource
    Pages: Online-Ressource (215 Seiten, 6 MB) , Diagramme
    Series Statement: Berichte aus dem Institut für Meereskunde an der Christian-Albrechts-Universität Kiel 196
    Language: German
    Note: Zusammenfassung in deutscher und englischer Sprache
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  • 2
    Online Resource
    Online Resource
    Cham : Springer International Publishing | Cham : Imprint: Springer
    Keywords: Polar regions. ; Aquatic ecology . ; Oceanography. ; Climate change. ; Conservation biology. ; Ecology . ; Geoecology. ; Environmental geology. ; Polargebiete ; Meereis ; Ökosystem ; Algen ; Archaebakterien ; Bakterien ; Antarktis ; Arktis ; Grönland ; Nordpolarmeer ; Ökologie ; Glaziologie
    Description / Table of Contents: Chapter 1. The Book, and Ecology of Sea Ice -- Chapter 2. Autumn, Development and Consolidation of Sea Ice -- Chapter 3. Winter, Cold and Mature Sea Ice -- Chapter 4. Spring, Summer and Melting Sea Ice -- Chapter 5. Sea Ice in a Climate Change Context -- Chapter 6. Methods and Techniques in Sea Ice Ecology.
    Type of Medium: Online Resource
    Pages: 1 Online-Ressource(XIV, 178 p. 130 illus., 103 illus. in color.)
    Edition: 1st ed. 2020.
    ISBN: 9783030374723
    Series Statement: Springer Polar Sciences
    Language: English
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  • 3
    Type of Medium: Online Resource
    Pages: Online-Ressource (231 Seiten, 4 MB) , Diagramme, Karten
    Series Statement: Berichte aus dem Institut für Meereskunde an der Christian-Albrechts-Universität Kiel 180
    Language: English
    Note: Zusammenfassung in deutscher und englischer Sprache
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  • 4
    Publication Date: 2024-06-12
    Description: We present sea ice temperature and salinity data from first-year ice (FYI) and second-year ice (SYI) relevant to the temporal development of sea ice permeability and brine drainage efficiency from the early growth phase in October 2019 to the onset of spring warming in May 2020. Our dataset was collected in the central Arctic Ocean during the Multidisciplinary drifting Observatory for the Study of Arctic Climate (MOSAiC) Expedition in 2019 to 2020. MOSAiC was an international transpolar drift expedition in which the German icebreaker RV Polarstern anchored into an ice floe to gain new insights into Arctic climate over a full annual cycle. In October 2019, RV Polarstern moored to an ice floe in the Siberian sector of the Arctic at 85 degrees north and 137 degrees east to begin the drift towards the North Pole and the Fram Strait via the Transpolar Drift Stream. The data presented here were collected during the first three legs of the expedition, so all the coring activities took place on the same floe. The end dates of legs 1, 2, and 3 were 13 December, 24 February, and 4 June, respectively. The dataset contributed to a baseline study entitled, Deciphering the properties of different Arctic ice types during the growth phase of the MOSAiC floes: Implications for future studies. The study highlights downward directed gas pathways in FYI and SYI by inferring sea ice permeability and potential brine release from several time series of temperature and salinity measurements. The physical properties presented in this paper lay the foundation for subsequent analyses on actual gas contents measured in the ice cores, as well as air-ice and ice-ocean gas fluxes. Sea ice cores were collected with a Kovacs Mark II 9 cm diameter corer. To measure ice temperatures, about 4.5 cm deep holes were drilled into the core (intervals varied by site and leg) . The temperatures were measured by a digital thermometer within minutes after the cores were retrieved. The ice cores were placed into pre-labelled plastic sleeves sealed at the bottom end. The ice cores were transported to RV Polarstern and stored in a -20 degrees Celsius freezer. Each of the cores was sub-sampled, melted at room temperature, and processed for salinity within one or two days. The practical salinity was estimated by measuring the electrical conductivity and temperature of the melted samples using a WTW Cond 3151 salinometer equipped with a Tetra-Con 325 four-electrode conductivity cell. The practical salinity represents the the salinity estimated from the electrical conductivity of the solution. The dataset also contains derived variables, including sea ice density, brine volume fraction, and the Rayleigh number.
    Keywords: AC3; Arctic Amplification; Arctic Ocean; Arctic Research Icebreaker Consortium: A strategy for meeting the needs for marine-based research in the Arctic; ARICE; brine; first-year ice; HAVOC; MOSAiC; MOSAiC_BGC; MOSAiC_ECO; MOSAiC_ICE; MOSAiC_SNOW; MOSAiC20192020; MOSAiC expedition; Multidisciplinary drifting Observatory for the Study of Arctic Climate; Ridges - Safe HAVens for ice-associated Flora and Fauna in a Seasonally ice-covered Arctic OCean; Sea ice; second-year ice; Temperature and Salinity
    Type: Dataset
    Format: application/zip, 6 datasets
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  • 5
    Publication Date: 2024-06-12
    Description: The data has been collected during the expedition "Multidisciplinary drifting Observatory for the Study of Arctic Climate" (MOSAiC) from September 2019 to September 2020 on research vessel Polarstern. The dataset contains abundance of sea ice protists, including ice algae (autotrophic) and protozoa (heterotrophic). Protists were identified and counted with light microscopy using the Utermöhl method and the result are given as cells per liter (cells/L) called Abundance. Sea ice samples were collected with a 9 cm diameter ice corer (Kovacs Enterprise) from both level and ridge ice. The samples were collected from the bottom part of the ice core and generally sectioned from 0-3 cm, 3-10 cm and in 10 cm intervals thereafter. With some exceptions, ice core sections were melted in filtered sea water at 4°C. Melted samples were preserved using Lugol-formaldehyde mixture with a few drops of acidic Lugol solution and hexamethylenetetramine-buffered formalin at a final concentrations of 1%.
    Keywords: Abundance; Abundance per area; Arctic Ocean; Class; Cruise/expedition; DATE/TIME; Date of determination; Depth, bathymetric; Depth, ice/snow, bottom/maximum; Depth, ice/snow, top/minimum; Diatom; Dilution factor; Event label; Family; Field number description; Fields; Gear; Genus; HAVOC; IC; ice algae; Ice corer; Identification qualifier; Identification remarks; Individuals; Investigator; LATITUDE; Life stage; Location; LONGITUDE; Magnification; MOSAiC; MOSAiC_ECO; MOSAiC20192020; Multidisciplinary drifting Observatory for the Study of Arctic Climate; Order; Organism remarks; Phylum; Polarstern; protists; PS122/2; PS122/2_18-61; PS122/2_19-116; PS122/2_20-5; PS122/2_21-124; PS122/2_23-3; PS122/3; PS122/3_37-32; PS122/3_39-104; PS122/4; PS122/4_45-131; PS122/4_46-178; PS122/4_47-199; PS122/4_48-229; Quantitative phytoplankton method (Utermöhl, 1958); Ridges - Safe HAVens for ice-associated Flora and Fauna in a Seasonally ice-covered Arctic OCean; Sample volume; Sea ice; Size group description; Taxon/taxa, unique identification; Taxon/taxa, unique identification (Semantic URI); Taxon/taxa, unique identification (URI); Volume
    Type: Dataset
    Format: text/tab-separated-values, 51603 data points
    Location Call Number Limitation Availability
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  • 6
    Publication Date: 2024-06-12
    Description: We present sea ice temperature and salinity data from first-year ice (FYI) and second-year ice (SYI) relevant to the temporal development of sea ice permeability and brine drainage efficiency from the early growth phase in October 2019 to the onset of spring warming in May 2020. Our dataset was collected in the central Arctic Ocean during the Multidisciplinary drifting Observatory for the Study of Arctic Climate (MOSAiC) Expedition in 2019 to 2020. MOSAiC was an international transpolar drift expedition in which the German icebreaker RV Polarstern anchored into an ice floe to gain new insights into Arctic climate over a full annual cycle. In October 2019, RV Polarstern moored to an ice floe in the Siberian sector of the Arctic at 85 degrees north and 137 degrees east to begin the drift towards the North Pole and the Fram Strait via the Transpolar Drift Stream. The data presented here were collected during the first three legs of the expedition, so all the coring activities took place on the same floe. The end dates of legs 1, 2, and 3 were 13 December, 24 February, and 4 June, respectively. The dataset contributed to a baseline study entitled, Deciphering the properties of different Arctic ice types during the growth phase of the MOSAiC floes: Implications for future studies. The study highlights downward directed gas pathways in FYI and SYI by inferring sea ice permeability and potential brine release from several time series of temperature and salinity measurements. The physical properties presented in this paper lay the foundation for subsequent analyses on actual gas contents measured in the ice cores, as well as air-ice and ice-ocean gas fluxes. Sea ice cores were collected with a Kovacs Mark II 9 cm diameter corer. To measure ice temperatures, about 4.5 cm deep holes were drilled into the core (intervals varied by site and leg) . The temperatures were measured by a digital thermometer within minutes after the cores were retrieved. The ice cores were placed into pre-labelled plastic sleeves sealed at the bottom end. The ice cores were transported to RV Polarstern and stored in a -20 degrees Celsius freezer. Each of the cores was sub-sampled, melted at room temperature, and processed for salinity within one or two days. The practical salinity was estimated by measuring the electrical conductivity and temperature of the melted samples using a WTW Cond 3151 salinometer equipped with a Tetra-Con 325 four-electrode conductivity cell. The practical salinity represents the the salinity estimated from the electrical conductivity of the solution. The dataset also contains derived variables, including sea ice density, brine volume fraction, and the Rayleigh number.
    Keywords: AC3; after Cox & Weeks (1983); Arctic Amplification; Arctic Ocean; Arctic Research Icebreaker Consortium: A strategy for meeting the needs for marine-based research in the Arctic; ARICE; brine; DATE/TIME; Density, ice; DEPTH, ice/snow; Estimated from electrical conductivity and temperature of the melted ice samples; Event label; first-year ice; HAVOC; IC; Ice corer; Linear interpolation at the midpoint of the sample based on the measurements from the ice temperature profile; MOSAiC; MOSAiC_BGC; MOSAiC_ECO; MOSAiC_ICE; MOSAiC_SNOW; MOSAiC20192020; MOSAiC expedition; Multidisciplinary drifting Observatory for the Study of Arctic Climate; Polarstern; PS122/1; PS122/1_10-16; PS122/1_5-78; PS122/1_6-36; PS122/1_7-9; PS122/1_9-11; PS122/2; PS122/2_20-5; PS122/2_22-7; PS122/2_25-15; PS122/3; PS122/3_33-18; PS122/3_36-4; PS122/3_38-16; PS122/3_39-18; Rayleigh number; Ridges - Safe HAVens for ice-associated Flora and Fauna in a Seasonally ice-covered Arctic OCean; Salinity; Sea ice; second-year ice; see comment; Site; Temperature, ice/snow; Temperature and Salinity; Utility; Volume, brine
    Type: Dataset
    Format: text/tab-separated-values, 2331 data points
    Location Call Number Limitation Availability
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  • 7
    Publication Date: 2024-06-12
    Description: The data has been collected during the the year-long drift expedition "Multidisciplinary drifting Observatory for the Study of Arctic Climate" (MOSAiC) from September 2019 to September 2020 on research vessel Polarstern. The samples were collected with Niskin bottles attached to a CTD rosette, an Apstein net with 20 µm mesh size, a hand pump or a pump mounted on a ROV. The samples were preserved using a few drops of Lugol and hexamethylenetetramine-buffered formalin at a final concentration of 1%. The samples were collected with Niskin bottles attached to a CTD rosette at the following depths: 5, 10, 30, 60, 90 m and deep chlorophyll max (DCM). Protists were identified and counted with light microscopy using the Utermöhl method and the result are given as cells per liter (cells/L) called Abundance.
    Keywords: Abundance; AIRS; Air sampler; Arctic Ocean; BEAST; Class; Comment; COND; Conductivity meter; Cruise/expedition; CTD/Rosette; CTD-RO; DATE/TIME; Date of determination; Depth, bathymetric; Depth, water, bottom/maximum; Depth, water, top/minimum; Diatom; Event label; Family; Field number description; Fields; Gear; Genus; Hand pump; HAVOC; HP; IC; Ice corer; Identification qualifier; Identification remarks; Individuals; Investigator; Laser Particle Sizer (LPS); LATITUDE; Life stage; Location; LONGITUDE; LPSIZ; Magnification; MOSAiC; MOSAiC_ECO; MOSAiC20192020; Multidisciplinary drifting Observatory for the Study of Arctic Climate; Order; Organism remarks; Phylum; Phytoplankton; Polarstern; protists; PS122/2; PS122/2_19-116; PS122/2_20-101; PS122/2_21-124; PS122/2_21-125; PS122/2_21-126; PS122/2_21-127; PS122/2_21-128; PS122/2_21-129; PS122/2_21-130; PS122/2_21-131; PS122/2_21-132; PS122/2_22-107; PS122/2_23-116; PS122/3; PS122/3_37-149; PS122/3_39-105; PS122/4; PS122/4_45-137; PS122/4_46-220; PS122/4_47-192; PS122/4_47-200; PS122/4_48-230; PS122/4_48-231; Quantitative phytoplankton method (Utermöhl, 1958); RADIO; Radiosonde; Remotely operated sensor platform BEAST; Ridges - Safe HAVens for ice-associated Flora and Fauna in a Seasonally ice-covered Arctic OCean; Sample volume; Scientific name; Size group description; Snow sampler metal; SSM; Taxon/taxa, unique identification; Taxon/taxa, unique identification (Semantic URI); Taxon/taxa, unique identification (URI)
    Type: Dataset
    Format: text/tab-separated-values, 20913 data points
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  • 8
    Publication Date: 2024-06-12
    Description: Second-year sea-ice thickness, draft, salinity, temperature, and density were measured during near-weekly surveys at the main second-year ice coring site (MCS-SYI) during the MOSAiC expedition (legs 1 to 3) and new second-year ice coring site leg 4, since the earlier site was not accessible any longer. The ice cores were extracted either with a 9-cm (Mark II) or 7.25-cm (Mark III) internal diameter ice corers (Kovacs Enterprise, US). This data set includes data from 18 coring site visits and were performed from 28 October 2019 to 20 July 2020 at coring locations within 50 m to each other in the MOSAiC Central Observatory. During each coring event, ice temperature was measured in situ from a separate temperature core, using Testo 720 thermometers in drill holes with a length of half-core-diameter at 5-cm vertical resolution. Ice bulk practical salinity was measured from melted core sections at 5-cm resolution using a YSI 30 conductivity meter. Ice density was measured using the hydrostatic weighing method (Pustogvar and Kulyakhtin, 2016) from a density core in the freezer laboratory onboard Polarstern at the temperature of –15°C. Relative volumes of brine and gas were estimated from ice salinity, temperature and density using Cox and Weeks (1983) for cold ice and Leppäranta and Manninen (1988) for ice warmer than –2°C. The data contains the event label (1), time (2), and global coordinates (3,4) of each coring measurement and sample IDs (13, 15). Each salinity core has its manually measured ice thickness (5), ice draft (6), core length (7), and mean snow height (22). Each core section has the total length of its top (8) and bottom (9) measured in situ, as well estimated depth of section top (10), bottom (11), and middle (12). The depth estimates assume that the total length of all core sections is equal to the measured ice thickness. Each core section has the value of its practical salinity (14), isotopic values (16, 17, 18) (Meyer et al., 2000), as well as sea ice temperature (19) and ice density (20) interpolated to the depth of salinity measurements. The global coordinates of coring sites were measured directly. When it was not possible, coordinates of the nearby temperature buoy 2019T62 (legs 1-3) or 2019T61 (leg 4) were used. Ice mass balance buoy 2019T62 installation is described in doi:10.1594/PANGAEA.940231, ice mass balance buoy 2020T61 installation is described in doi: 10.1594/PANGAEA.926580. Brine volume (21) fraction estimates are presented only for fraction values from 0 to 30%. Each core section also has comments (23) describing if the sample is from a new coring site or has any other special characteristics. Macronutrients from the salinity core will be published in a subsequent version of this data set.
    Keywords: Arctic; Arctic Ocean; Arctic Research Icebreaker Consortium: A strategy for meeting the needs for marine-based research in the Arctic; ARICE; Calculated; Comment; Core length; cores; DATE/TIME; density; Density, ice; Depth, adjusted; Depth, adjusted bottom; Depth, adjusted top; Depth, ice/snow, bottom/maximum; Depth, ice/snow, top/minimum; Deuterium excess; Ecological monitoring; Event label; HAVOC; Hydrostatic weighing; IC; Ice corer; ICEGAUGE; Ice thickness gauge; Isotopic liquid water analyzer; LATITUDE; LONGITUDE; MOSAiC; MOSAiC_ECO; MOSAiC_ICE; MOSAiC20192020; Multidisciplinary drifting Observatory for the Study of Arctic Climate; Physical properties; Polarstern; PS122/1; PS122/1_10-16; PS122/1_5-78; PS122/1_6-36; PS122/1_7-53; PS122/1_7-9; PS122/1_9-11; PS122/2; PS122/2_20-5; PS122/2_22-7; PS122/2_25-15; PS122/3; PS122/3_33-18; PS122/3_35-4; PS122/3_36-4; PS122/3_38-16; PS122/3_39-18; PS122/4; PS122/4_45-29; PS122/4_46-20; PS122/4_47-18; PS122/4_48-25; Ridges - Safe HAVens for ice-associated Flora and Fauna in a Seasonally ice-covered Arctic OCean; Salinity; Temperature; Salinometer, inductive; Sample ID; Sea ice; Sea ice draft; Sea ice salinity; Sea ice thickness; Snow height; Tape measure; Temperature, ice/snow; Thermometer; time-series; Volume, brine; δ18O, water; δ Deuterium, water
    Type: Dataset
    Format: text/tab-separated-values, 9395 data points
    Location Call Number Limitation Availability
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  • 9
    Publication Date: 2024-06-12
    Description: This dataset consists of lipid analysis, fatty acid analysis, and compound specific stable isotope analysis of δ13C values in fatty acids. These parameters were measured in three pelagic zooplankton (Calanus glacialis, Thysanoessa inermis, and Themisto libellula) and two sea-ice associated amphipods (Apherusa glacialis, Gammarus wilkitzkii). Zooplankton and ice-associated amphipods were collected on the R/V Polarstern PS106/1 (23 May - 21 June 2017) and PS106/2 (23 June - 20 July 2017) campaigns and on two R/V Helmer Hanssen polar night campaigns (4 - 16 January 2017 and 5 - 18 January 2018). See document details for the different types of gear used, which included Multinets, pelagic trawls, Surface Underwater Ice Trawls, and ROV nets. Organisms were collected north of Svalbard, the Barents Sea, and within the Nansen Basin of the Arctic Ocean. Lipid class analysis was conducted using high performance liquid chromatography. Extracted lipids were converted into fatty acid methyl esters, and quantified (via an internal standard) using an Agilent 6890N gas chromatograph. Compound specific stable isotope ratios of fatty acid methyl esters (δ13C fa) were analyzed using a Trace Ultra gas chromatograph (GC), a GC Isolink system, and a Delta V Plus isotope ratios mass spectrometer, connected to a Conflo IV interface. The purpose of these measurements was to compare feeding activity between polar day (June/July) and polar night (January) in these five invertebrate species. Also, in light of recent research that there are higher levels of biological species activity during polar night than previously assumed, determine if these invertebrates were maintaining higher levels of activity on stored lipids, opportunistic feeding, or a combination of both.
    Keywords: (E,7R,11R)-3,7,11,15-tetramethylhexadec-2-en-1-ol; 12-methyl-Tetradecanoic acid of total fatty acids (IUPAC: 12-methyltetradecanoic acid); 6,9,12,15-Hexadecatetraenoic acid of total fatty acids; 6,9,12-Hexadecatrienoic acid, δ13C; 6,9,12-Hexadecatrienoic acid of total fatty acids; 9,12-Hexadecadienoic acid, δ13C; 9,12-Hexadecadienoic acid of total fatty acids; Absolute lipid content; all-cis-11,14,17-Eicosatrienoic acid, δ13C; all-cis-11,14,17-Eicosatrienoic acid of total fatty acids; all-cis-11,14-Eicosadienoic acid, δ13C; all-cis-13,16-Docosadienoic acid, δ13C; all-cis-4,7,10,13,16,19-Docosahexaenoic acid, δ13C; all-cis-4,7,10,13,16,19-Docosahexaenoic acid of total fatty acids; all-cis-5,8,11,14,17-Eicosapentaenoic acid, δ13C; all-cis-5,8,11,14,17-Eicosapentaenoic acid of total fatty acids; all-cis-5,8,11,14-Eicosatetraenoic acid, δ13C; all-cis-5,8,11,14-Eicosatetraenoic acid of total fatty acids; all-cis-6,9,12,15-Octadecatetraenoic acid, δ13C; all-cis-6,9,12,15-Octadecatetraenoic acid of total fatty acids; all-cis-6,9,12-Octadecatrienoic acid, δ13C; all-cis-6,9,12-Octadecatrienoic acid of total fatty acids; all-cis-7,10,13,16,19-Docosapentaenoic acid of total fatty acids; all-cis-8,11,14,17-Eicosatetraenoic acid, δ13C; all-cis-8,11,14,17-Eicosatetraenoic acid of total fatty acids; all-cis-8,11-Eicosasadienoic acid of total fatty acids; all-cis-9,12,15-Octadecatrienoic acid, δ13C; all-cis-9,12,15-Octadecatrienoic acid of total fatty acids; all-cis-9,12-Octadecadienoic acid, δ13C; all-cis-9,12-Octadecadienoic acid of total fatty acids; Analytical balance, KERN, ABT 500-5M; apherusa glacialis; Arctic; Arctic Ocean; ARK-XXXI/1.1,PASCAL; ARK-XXXI/1.2; Barents Sea; BONGO; Bongo net; Calanus glacialis; Calculated; cis-11-Docosenoic acid, δ13C; cis-11-Docosenoic acid of total fatty acids; cis-11-Hexadecenoic acid, δ13C; cis-11-Hexadecenoic acid of total fatty acids (IUPAC: (11Z)-hexadec-11-enoic acid); cis-11-Icosenoic acid, δ13C; cis-11-Icosenoic acid of total fatty acids; cis-11-Octadecenoic acid, δ13C; cis-11-Octadecenoic acid of total fatty acids (IUPAC: Octadec-11-enoic acid); cis-13-Docosenoic acid, δ13C; cis-13-Docosenoic acid of total fatty acids; cis-13-Icosenoic acid, δ13C; cis-13-Icosenoic acid of total fatty acids; cis-13-Octadecenoic acid, δ13C; cis-13-Octadecenoic acid of total fatty acids; cis-15-Docosenoic acid, δ13C; cis-15-Docosenoic acid of total fatty acids; cis-9-Heptadecenoic acid of total fatty acids; cis-9-Hexadecenoic acid, δ13C; cis-9-Hexadecenoic acid of total fatty acids (IUPAC: (9Z)-hexadec-9-enoic acid); cis-9-Icosanoic acid, δ13C; cis-9-Icosanoic acid of total fatty acids; cis-9-Octadecenoic acid, δ13C; cis-9-Octadecenoic acid of total fatty acids (IUPAC: Octadec-9-enoic acid); CSIA; DATE/TIME; Date/time end; Date/time start; Depth, bathymetric; DEPTH, water; Depth comment; Docosanoic acid, δ13C; Event label; fatty acids; Fatty acids, free; Fatty alcohols; Gammarus wilkitzkii; Gas chromatograph, Agilent, 6890N; Gas chromatograph, Thermo Fisher Scientific, TRACE GC Ultra; coupled with Isotope ratio mass spectrometer, Thermo Fisher Scientific, Delta V Plus; Gear; Helmer Hanssen; Heneicosanoic acid, δ13C; Heptadecanoic acid, δ13C; Heptadecanoic acid of total fatty acids; Hexadecanoic acid, δ13C; Hexadecanoic acid of total fatty acids; High performance liquid chromatography (HPLC) system, VWR, LaChrome Elite; coupled with evaporative light scattering detector (ELSD), Sedere, SEDEX 75; ICE; Ice station; Icosanoic acid, δ13C; Icosanoic acid of total fatty acids; iso-Pentadecanoic acid of total fatty acids (IUPAC: 13-methyltetradecanoic acid); isotope analysis; LATITUDE; lipid classes; Lipids, total, per dry mass; LONGITUDE; Lyso-Phosphatidylcholines; Midwater Ring Net; Midwater trawl; MIK-N; MSN; Multiple opening/closing net; MWT; Name; Octadecanoic acid, δ13C; Octadecanoic acid of total fatty acids; Pentadecanoic acid, δ13C; Pentadecanoic acid of total fatty acids; Phosphatidylcholine; Phosphatidylethanolamine; Phosphatidylinositol; Phosphatidylserine; PNC17; PNC17_NS10-146; PNC17_NS1-105; PNC17_NS1-95; PNC17_NS4-112; PNC17_NS4-113; PNC17_NS6-120; PNC17_NS6-127; PNC17_NS6-128; PNC17_NS6-129; PNC17_NS9-136; PNC17_NS9-138; PNC18; PNC18_B34-46; PNC18_B34-61; polar night; Polarstern; PS106_27-1; PS106_28-2; PS106_32-2; PS106_45-1; PS106_49-5; PS106_50-5; PS106_63-1; PS106_64-2; PS106_65-4; PS106_66-3; PS106_70-1; PS106_72-5; PS106_73-7; PS106_74-4; PS106_74-5; PS106_76-3; PS106_76-4; PS106_79-1; PS106_80-3; PS106_83-6; PS106/1; PS106/2; Rectangular midwater trawl; RMT; Sample, dry mass; Sample amount; Sample ID; Species, unique identification; Species, unique identification (Semantic URI); Species, unique identification (URI); Station label; Sterols; SUIT; Surface and under ice trawl; sympagic fauna; Tetradecanoic acid, δ13C; Tetradecanoic acid of total fatty acids; Themisto libellula; Thysanoessa inermis; Triacylglycerols; Wax esters; WP2; WP-2 towed closing plankton net; Zooplankton
    Type: Dataset
    Format: text/tab-separated-values, 3159 data points
    Location Call Number Limitation Availability
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  • 10
    Publication Date: 2024-06-12
    Description: First-year sea-ice thickness, draft, salinity, temperature, and density were measured during near-weekly surveys at the main first-year ice coring site (MCS-FYI) during the MOSAiC expedition (legs 1 to 4). The ice cores were extracted either with a 9-cm (Mark II) or 7.25-cm (Mark III) internal diameter ice corers (Kovacs Enterprise, US). This data set includes data from 23 coring site visits and were performed from 28 October 2019 to 29 July 2020 at coring locations within 130 m to each other in the MOSAiC Central Observatory. During each coring event, ice temperature was measured in situ from a separate temperature core, using Testo 720 thermometers in drill holes with a length of half-core-diameter at 5-cm vertical resolution. Ice bulk practical salinity was measured from melted core sections at 5-cm resolution using a YSI 30 conductivity meter. Ice density was measured using the hydrostatic weighing method (Pustogvar and Kulyakhtin, 2016) from a density core in the freezer laboratory onboard Polarstern at the temperature of –15°C. Relative volumes of brine and gas were estimated from ice salinity, temperature and density using Cox and Weeks (1983) for cold ice and Leppäranta and Manninen (1988) for ice warmer than –2°C. The data contains the event label (1), time (2), and global coordinates (3,4) of each coring measurement and sample IDs (13, 15). Each salinity core has its manually measured ice thickness (5), ice draft (6), core length (7), and mean snow height (22). Each core section has the total length of its top (8) and bottom (9) measured in situ, as well estimated depth of section top (10), bottom (11), and middle (12). The depth estimates assume that the total length of all core sections is equal to the measured ice thickness. Each core section has the value of its practical salinity (14), isotopic values (16, 17, 18) (Meyer et al., 2000), as well as sea ice temperature (19) and ice density (20) interpolated to the depth of salinity measurements. The global coordinates of coring sites were measured directly. When it was not possible, coordinates of the nearby temperature buoy 2019T66 were used. Ice mass balance buoy 2019T66 installation is described in doi:10.1594/PANGAEA.938134. Brine volume (21) fraction estimates are presented only for fraction values from 0 to 30%. Each core section also has comments (23) describing if the sample is from a false bottom, from rafted ice or has any other special characteristics. Macronutrients from the salinity core, and more isotope data will be published in a subsequent version of this data set.
    Keywords: Arctic; Arctic Ocean; Arctic Research Icebreaker Consortium: A strategy for meeting the needs for marine-based research in the Arctic; ARICE; Calculated; Comment; Core length; cores; DATE/TIME; density; Density, ice; Depth, adjusted; Depth, adjusted bottom; Depth, adjusted top; Depth, ice/snow, bottom/maximum; Depth, ice/snow, top/minimum; Deuterium excess; Ecological monitoring; Event label; HAVOC; Hydrostatic weighing; IC; Ice corer; ICEGAUGE; Ice thickness gauge; Isotopic liquid water analyzer; LATITUDE; LONGITUDE; MOSAiC; MOSAiC_ECO; MOSAiC_ICE; MOSAiC20192020; Multidisciplinary drifting Observatory for the Study of Arctic Climate; Physical properties; Polarstern; PS122/1; PS122/1_10-19; PS122/1_5-3; PS122/1_6-34; PS122/1_7-6; PS122/1_7-97; PS122/1_8-2; PS122/1_9-6; PS122/1_9-93; PS122/2; PS122/2_17-3; PS122/2_19-7; PS122/2_21-13; PS122/2_23-3; PS122/2_24-8; PS122/3; PS122/3_32-63; PS122/3_35-11; PS122/3_36-21; PS122/3_38-24; PS122/3_39-7; PS122/4; PS122/4_44-134; PS122/4_46-18; PS122/4_47-16; PS122/4_48-23; PS122/4_49-34; Ridges - Safe HAVens for ice-associated Flora and Fauna in a Seasonally ice-covered Arctic OCean; Salinity; Salinometer, inductive; Sample ID; Sea ice; Sea ice draft; Sea ice salinity; Sea ice thickness; Snow height; Tape measure; Temperature; Temperature, ice/snow; Thermometer; time-series; Volume, brine; δ18O, water; δ Deuterium, water
    Type: Dataset
    Format: text/tab-separated-values, 7847 data points
    Location Call Number Limitation Availability
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