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  • PANGAEA  (14)
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  • 1
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    Nutrients in porewater from Elbe Estuary and adjacent Wadden Sea during Ludwig Prandtl cruise LP0903 in March 2009 (2017)
    PANGAEA
    In:  Helmholtz-Zentrum Geesthacht Centre for Materials and Coastal Research
    Details
    Publication Date: 2023-03-23
    Keywords: Ammonium; Böschrücken; Date/Time of event; DEPTH, sediment/rock; Elevation of event; Event label; Katinger Watt; Klotzenloch; Latitude of event; Location of event; Longitude of event; LP0903; LP0903/BR-1; LP0903/KL-1; LP0903/KW-1; LP0903/ML-1; LP0903/NW-1; LP0903/STS-1; LP0903/TR-1; LP0903/TS-1; LP0903/WW-1; Ludwig Prandtl; Mühlenberger Loch; Neufelder Watt; Nitrate; Nitrite; Phosphate; Sample code/label; Schwarztonnensand; Seawater analysis after Grasshoff et al., 1983 (Verlag Chemie GmbH Weinheim); Tertiussand; Trischen; Wesselburener Watt
    Type: Dataset
    Format: text/tab-separated-values, 1125 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 2
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    Nutrients in porewater profiles from German Bight and Elbe Estuary (2017)
    PANGAEA
    In:  Supplement to: Neumann, Andreas; van Beusekom, Justus; Holtappels, Moritz; Emeis, Kay-Christian (2017): Nitrate consumption in sediments of the German Bight (North Sea). Journal of Sea Research, 127, 26-35, https://doi.org/10.1016/j.seares.2017.06.012
    Details
    Publication Date: 2023-03-23
    Description: Denitrification on continental margins and in coastal sediments is a major sink of reactive N in the present nitrogen cycle and a major ecosystem service of eutrophied coastal waters. We analysed the nitrate removal in surface sediments of the Elbe estuary, Wadden Sea, and adjacent German Bight (SE North Sea) during two seasons (spring and summer) along a eutrophication gradient ranging from a high riverine nitrate concentrations at the Elbe Estuary to offshore areas with low nitrate concentrations. The gradient encompassed the full range of sediment types and organic carbon concentrations of the southern North Sea. Based on nitrate penetration depth and concentration gradient in the porewater we estimated benthic nitrate consumption rates assuming either diffusive transport in cohesive sediments or advective transport in permeable sediments. For the latter we derived a mechanistic model of porewater flow. During the peak nitrate discharge of the river Elbe in March, the highest rates of diffusive nitrate uptake were observed in muddy sediments (up to 2.8 mmol/m**2/d). The highest advective uptake rate in that period was observed in permeable sediment and was tenfold higher (up to 32 mmol/m**2/d). The intensity of both diffusive and advective nitrate consumption dropped with the nitrate availability and thus decreased from the Elbe estuary towards offshore stations, and were further decreased during late summer (minimum nitrate discharge) compared to late winter (maximum nitrate discharge). In summary, our rate measurements indicate that the permeable sediment accounts for up to 90 % of the total benthic reactive nitrogen consumption in the study area due to the high efficiency of advective nitrate transport into permeable sediment. Extrapolating the averaged nitrate consumption of different sediment classes to the areas of Elbe Estuary, Wadden Sea and eastern German Bight amounts to an N-loss of 3.1 * 10**6 mol N/d from impermeable, diffusion-controlled sediment, and 5.2 * 10**7 mol N/d from permeable sediment with porewater advection.
    Type: Dataset
    Format: application/zip, 3 datasets
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 3
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    Permeability and porosity of surface sediments in the German Bight (North Sea)
    PANGAEA
    In:  Supplement to: Neumann, Andreas; Möbius, Jürgen; Hass, H Christian; Puls, Walter; Friedrich, Jana (2016): Empirical model to estimate permeability of surface sediments in the German Bight (North Sea). Journal of Sea Research, https://doi.org/10.1016/j.seares.2016.12.002
    Details
    Publication Date: 2023-05-12
    Description: As the determinant of solute and particle fluxes through sediments, quantifying sediment permeability is vital step in understanding of the exchange phenomena between the water column and sediment as permeability determines the mode and intensity of solute and particle fluxes. Reliable estimates of sediment permeability are therefore a constraint on the accurate implementation of benthic biogeochemical models. This is particularly true for the North Sea, as field data are scarce and available grain-size-based models fail to represent the full range of sediment types. In this study, we combine measurements of sediment permeability and grain size analysis with a generic permeability model to establish a high-resolution permeability map of the sediment in the German Bight (North Sea). Our results show a good agreement between model-based prediction and measurements of permeability, even for a wide range of permeability values.
    Type: Dataset
    Format: application/zip, 3 datasets
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 4
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    Permeability and porosity of North Sea surface sediment sampled during HEINCKE cruise HE412 (2016)
    PANGAEA
    Details
    Publication Date: 2024-01-12
    Keywords: BG; Boomerang-Grab; Date/Time of event; DEPTH, sediment/rock; Elevation of event; Event label; HE412; HE412/02-2; HE412/04-3; HE412/07-11; HE412/07-12; HE412/07-13; HE412/07-15; HE412/07-4; HE412/07-6; HE412/07-9; HE412/09-1; HE412/09-10; HE412/09-13; HE412/09-2; HE412/09-4; HE412/09-6; HE412/09-8; HE412/10-3; HE412/14-4; HE412/20-10; HE412/20-2; HE412/20-3; HE412/20-4; HE412/20-6; HE412/20-8; Heincke; Latitude of event; Longitude of event; MUC; MultiCorer; North Sea; Permeability (earth science); Porosity; van Veen Grab; VGRAB
    Type: Dataset
    Format: text/tab-separated-values, 48 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 5
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    Permeability and porosity of North Sea surface sediment sampled during HEINCKE cruise HE411 (2016)
    PANGAEA
    Details
    Publication Date: 2024-01-12
    Keywords: Date/Time of event; DEPTH, sediment/rock; Elevation of event; Event label; HE411; HE411/001-2; HE411/004-2; HE411/007-2; HE411/010-1; HE411/014-1; HE411/025-1; HE411/030-1; HE411/036-1; HE411/040-1; HE411/041-1; HE411/045-1; HE411/046-1; HE411/047-1; HE411/048-1; HE411/056-1; HE411/058-1; HE411/061-1; HE411/065-1; HE411/068-1; HE411/069-1; HE411/070-1; HE411/086-1; HE411/091-1; HE411/093-1; HE411/111-1; HE411/112-1; HE411/113-1; HE411/114-1; HE411/120-1; HE411/121-1; HE411/123-1; HE411/124-1; HE411/125-1; HE411/130-1; HE411/131-1; HE411/134-1; HE411/135-1; HE411/139-1; HE411/140-1; HE411/146-1; HE411/151-1; Heincke; Latitude of event; Longitude of event; North Sea; Permeability (earth science); Porosity; van Veen Grab; VGRAB
    Type: Dataset
    Format: text/tab-separated-values, 82 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 6
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    Nutrients in porewater from German Bight during HEINCKE cruise HE318 in February 2010 (2017)
    PANGAEA
    In:  Helmholtz-Zentrum Geesthacht Centre for Materials and Coastal Research
    Details
    Publication Date: 2024-01-12
    Keywords: Ammonium; Date/Time of event; DEPTH, sediment/rock; Elevation of event; Event label; HE318; HE318/177-3; HE318/180-2; HE318/181-3; HE318/189-2; HE318/191-2; HE318/193-2; HE318/195-2; HE318/196-2; HE318/197-2; HE318/199-2; HE318/209-2; HE318/210-2; HE318/212-2; HE318/214-2; HE318/216-2; Heincke; Latitude of event; Longitude of event; MG; MUC; Multiboxcorer; MultiCorer; Nitrate; Nitrite; North Sea; Phosphate; Sample code/label; Seawater analysis after Grasshoff et al., 1983 (Verlag Chemie GmbH Weinheim)
    Type: Dataset
    Format: text/tab-separated-values, 920 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 7
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    Nutrients in porewater from German Bight during HEINCKE cruise HE304 in May and June 2009 (2017)
    PANGAEA
    In:  Helmholtz-Zentrum Geesthacht Centre for Materials and Coastal Research
    Details
    Publication Date: 2024-01-12
    Keywords: Ammonium; Date/Time of event; DEPTH, sediment/rock; Elevation of event; Event label; HE304; HE304/320-3; HE304/321-5; HE304/322-2; HE304/327-2; HE304/334-2; HE304/335-2; HE304/336-2; HE304/337-2; HE304/338-2; HE304/339-2; HE304/342-1; HE304/343-3; HE304/350-2; HE304/351-2; HE304/354-2; Heincke; Latitude of event; Longitude of event; MUC; MultiCorer; Nitrate; Nitrite; North Sea; Phosphate; Sample code/label; Seawater analysis after Grasshoff et al., 1983 (Verlag Chemie GmbH Weinheim)
    Type: Dataset
    Format: text/tab-separated-values, 1635 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 8
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    Permeability and porosity of North Sea surface sediment sampled during HEINCKE cruise HE432 (2016)
    PANGAEA
    Details
    Publication Date: 2024-01-12
    Keywords: BC; Box corer; Date/Time of event; DEPTH, sediment/rock; Device type; Elevation of event; Event label; GeoB18801-28; GeoB18801-8; GeoB18802-1; GeoB18803-1; GeoB18804-1; GeoB18805-21; GeoB18806-1; GeoB18807-1; GeoB18808-1; GeoB18809-1; GeoB18809-14; GeoB18810-5; GeoB18811-12; GeoB18811-4; GeoB18812-2; GeoB18815-1; GeoB18816-1; GeoB18818-10; GeoB18819-2; GeoB18820-1; GeoB18827-1; GeoB18827-10; GeoB18827-12; GeoB18827-5; GeoB18827-7; GeoB18827-9; GeoB18832-1; Grab; GRAB; HE432; HE432/01-28; HE432/01-8; HE432/02-1; HE432/03-1; HE432/04-1; HE432/05-21; HE432/06-1; HE432/07-1; HE432/08-1; HE432/09-1; HE432/09-14; HE432/10-5; HE432/11-12; HE432/11-4; HE432/12-2; HE432/15-1; HE432/16-1; HE432/18-10; HE432/19-2; HE432/20-1; HE432/27-1; HE432/27-10; HE432/27-12; HE432/27-5; HE432/27-7; HE432/27-9; HE432/32-1; Heincke; Latitude of event; Longitude of event; MUC; MultiCorer; North Sea; Permeability (earth science); Porosity; van Veen Grab; VGRAB
    Type: Dataset
    Format: text/tab-separated-values, 80 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 9
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    Nutrient and trace metal data distribution from water samples of ALKOR cruise AL557 (2024)
    PANGAEA
    Details
    Publication Date: 2024-06-25
    Description: The water samples were taken from Niskin bottles attached to a CTD in June 2021 on the cruise AL557 in the Skagerrak and the North Sea. The trace element samples were filtered in triplicates with DigiFILTERs (trademark) (0.45 microm, 50 mL, SCP Science, Canada) and measured by seaFAST-ICP-MS (seaFAST SP2, Elemental Scientific, USA; Agilent 8900, Agilent Technologies, Japan; Przibilla et al., 2023; https://doi.org/10.1002/wer.10922). The nutrient samples were filtered with 0.47microm cellulose acetate syringe filters (Minisart, Sartorius, Germany) and analyzed with standard colorimetric techniques (Hansen and Koroleff, 2007) on a continuous flow auto analyzer (AA3, SEAL Analytical, Germany).
    Keywords: AA3 Seal Analytical continuous segmented flow nutrient analyser; AL557; AL557_10-2; AL557_1-1; AL557_11-2; AL557_12-1; AL557_13-1; AL557_14-1; AL557_15-2; AL557_16-1; AL557_17-1; AL557_18-1; AL557_19-1; AL557_20-1; AL557_2-1; AL557_21-1; AL557_22-1; AL557_23-1; AL557_24-1; AL557_25-1; AL557_26-1; AL557_27-1; AL557_28-1; AL557_29-1; AL557_30-1; AL557_3-1; AL557_31-1; AL557_32-1; AL557_33-1; AL557_34-1; AL557_35-3; AL557_35-4; AL557_36-1; AL557_37-2; AL557_38-1; AL557_39-2; AL557_40-1; AL557_4-1; AL557_41-1; AL557_42-2; AL557_43-2; AL557_44-2; AL557_45-2; AL557_46-1; AL557_47-3; AL557_48-2; AL557_49-1; AL557_50-1; AL557_5-1; AL557_51-1; AL557_52-1; AL557_53-1; AL557_54-1; AL557_55-2; AL557_55-4; AL557_56-3; AL557_56-5; AL557_57-2; AL557_57-4; AL557_58-2; AL557_58-4; AL557_59-2; AL557_59-4; AL557_6-1; AL557_61-2; AL557_61-4; AL557_62-2; AL557_62-4; AL557_63-2; AL557_63-4; AL557_64-2; AL557_64-4; AL557_65-5; AL557_65-6; AL557_7-1; AL557_8-1; AL557_9-1; Alkor (1990); Ammonium; Ammonium, uncertainty; Cadmium; Cadmium, uncertainty; Cerium; Cerium, uncertainty; Cobalt; Cobalt, uncertainty; Copper; Copper, uncertainty; CTD/Rosette; CTD-RO; DATE/TIME; DEPTH, water; Device type; Dysprosium; Dysprosium, uncertainty; Erbium; Erbium, uncertainty; Europium; Europium, uncertainty; Event label; Gadolinium; Gadolinium, uncertainty; Holmium; Holmium, uncertainty; ICP-MS, Elemental Scientific, seaFAST; Iron; Iron, uncertainty; Lanthanum; Lanthanum, uncertainty; LATITUDE; Lead; Lead, uncertainty; LONGITUDE; Lutetium; Lutetium, uncertainty; Manganese; Manganese, uncertainty; Molybdenum; Molybdenum, uncertainty; Neodymium; Neodymium, uncertainty; Nickel; Nickel, uncertainty; Nitrate; Nitrate, uncertainty; Nitrite; Nitrite, uncertainty; North Sea; Norwegian Sea; Phosphate; Phosphate, uncertainty; Praseodymium; Praseodymium, uncertainty; Samarium; Samarium, uncertainty; Sample code/label; Sample elevation; Silicate; Silicate, dissolved, uncertainty; Skagerrak; Station label; Terbium; Terbium, uncertainty; Thulium; Thulium, uncertainty; Tungsten; Tungsten, uncertainty; Uranium; Uranium, uncertainty; Vanadium; Vanadium, uncertainty; Ytterbium; Ytterbium, uncertainty; Yttrium; Yttrium, uncertainty; Zinc; Zinc, uncertainty
    Type: Dataset
    Format: text/tab-separated-values, 13961 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 10
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    pCO2 underway data from the Benguela Upwelling System in southeastern South Atlantic Ocean (2017)
    PANGAEA
    In:  Supplement to: Emeis, Kay-Christian; Eggert, Anja; Flohr, Anita; Lahajnar, Niko; Nausch, Günther; Neumann, Andreas; Rixen, Tim; Schmidt, Martin; van der Plas, Anja K; Wasmund, Norbert (2018): Biogeochemical processes and turnover rates in the Northern Benguela Upwelling System. Journal of Marine Systems, 188, 63-80, https://doi.org/10.1016/j.jmarsys.2017.10.001
    Details
    Publication Date: 2024-04-22
    Description: Within the BMBF funded project GENUS (Geochemistry and Ecology of the Namibian Upwelling System) the mole fraction of CO2 (xCO2) was measured in surface waters by using an underway pCO2 system (SUNDANS) duirng seven cruises. SUNDANS was developed by "marine analytics and data" (MARIANDA, Germany, www.marianda.com) according to the recommendations of the 2002 underway pCO2 system workshop in Miami. It was equipped with a shower type equilibrator, an open pre-equilibrator and a non-dispersive dual cell infrared gas analyzer (LI-7000). The LI-7000 was calibrated by using nitrogen gas (zero CO2) and a two additional standard gas for CO2. The standard gases were obtained from the company Deuste Steininger GmbH, Germany and revealed CO2 concentrations of 350 to 480 ppm (Std1) and around 800 ppm (Std2). The CO2 standard gases were calibrated against the standard gases provided by NOAA at the Institute for Baltic Sea Research in Warnemünde, Germany (Ref. No. CA07600 and CC311968) and the Centre for Tropical Marine Research in Bremen, Germany (Ref. No. CB08923 and CA06265). The xCO2 data were recorded each 6 seconds and subsequently averaged minute by minute. Minute by minute data on atmospheric pressure, wind speed, seawater temperature and salinity were measured by underway systems mounted on board the research vessels. xCO2 was converted into pCO2 by using the CO2 sys program. The difference between the equilibrator and the sea water temperature was taken into account as suggested by Dickson et al. (2007, SOP5, page 8). During the RV Metoer cruise M67/2 between May 15 and June 05 2008 the pCO was measured by using PSI CO2-ProTM underwater carbon dioxide sensor designs by Pro-Oceanus Systems In., USA.
    Keywords: GENUS; Geochemistry and ecology of the Namibian upwelling system
    Type: Dataset
    Format: application/zip, 14 datasets
    Location Call Number Limitation Availability
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    DATA PANGAEA
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