Braeckman, Ulrike; Felden, Janine (2024): Porewater nutrients of the Northeast Greenland (NEG) shelf sediments from POLARSTERN cruise PS109 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.959549
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Abstract:
Sediment porewater chemistry (nutrient, DIC, sulfide and sulfate) on the Northeast Greenland shelf were assessed with R/V Polarstern during PS109 between September and October 2017 using two cores with pre-drilled holes mounted on a multiple corer (MUC) a camera-equipped multiple corer (TV-MUC; core area 0.007 m²). Upon arrival on deck, Rhizon samplers were inserted carefully into the holes with intervals of 1 cm until 10 cm sediment depth, and 2 cm intervals until 20 cm sediment depth to extract the sediment porewater. To get a total of 9 ml/l porewater for each depth interval, the porewater from both cores was pooled for each depth. For the analysis of DIC, 2 ml/l porewater from each depth was transferred to a glass vial which had been pre-treated with HgCl₂ and stored at 4°C. DIC concentrations were measured using a flow injection system equipped with the Spark Optimas auto-sampler (model 820, Ambacht, Netherlands). For the determination of porewater nutrients, 4 ml/l of porewater was sampled with acid-washed Sarstedt Vials and stored at -20°C. In the laboratory, 4 ml/l was subsampled for phosphate, silicate and ammonium, while 1 ml/l was subsampled for nitrate and nitrite, and subsequently analyzed with a Continuous Segmented Flow Analyser (QuAAtro39, SEAL Analytical, Norderstedt, Germany).
Keyword(s):
Supplement to:
Bodur, Yasemin V; Renaud, Paul E; Lins, Lidia; Da Costa Monteiro, Luana; Ambrose, William G Jr; Felden, Janine; Krumpen, Thomas; Wenzhöfer, Frank; Wlodarska-Kowalczuk, Maria; Braeckman, Ulrike (submitted): Weaker pelagic-benthic coupling leads to ecosystem change on an Arctic outflow shelf (Northeast Greenland). Elementa - Science of the Anthropocene
Project(s):
Funding:
Coverage:
Median Latitude: 78.767909 * Median Longitude: -14.487278 * South-bound Latitude: 76.486900 * West-bound Longitude: -19.321920 * North-bound Latitude: 80.317630 * East-bound Longitude: -7.132010
Date/Time Start: 2017-09-17T12:24:00 * Date/Time End: 2017-10-07T02:06:00
Minimum DEPTH, sediment/rock: 0.005 m * Maximum DEPTH, sediment/rock: 0.190 m
Event(s):
PS109_19-2 * Latitude: 80.147460 * Longitude: -7.949720 * Date/Time: 2017-09-17T12:24:00 * Elevation: -316.0 m * Campaign: PS109 (ARK-XXXI/4) * Basis: Polarstern * Method/Device: Multicorer with television (TVMUC)
PS109_36-2 * Latitude: 80.317630 * Longitude: -10.031730 * Date/Time: 2017-09-19T06:09:00 * Elevation: -318.0 m * Campaign: PS109 (ARK-XXXI/4) * Basis: Polarstern * Method/Device: Multicorer with television (TVMUC)
PS109_45-4 * Latitude: 80.134370 * Longitude: -17.710500 * Date/Time: 2017-09-20T20:05:00 * Elevation: -219.0 m * Campaign: PS109 (ARK-XXXI/4) * Basis: Polarstern * Method/Device: Multicorer with television (TVMUC)
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Braeckman, Ulrike | |||
| 2 | Latitude of event | Latitude | Braeckman, Ulrike | |||
| 3 | Longitude of event | Longitude | Braeckman, Ulrike | |||
| 4 | Date/Time of event | Date/Time | Braeckman, Ulrike | |||
| 5 | Elevation of event | Elevation | m | Braeckman, Ulrike | ||
| 6 | Method/Device of event | Method/Device | Braeckman, Ulrike | |||
| 7 | Subsample ID | Subsample ID | Braeckman, Ulrike | |||
| 8 | Depth, top/min | Depth top | m | Braeckman, Ulrike | ||
| 9 | Depth, bottom/max | Depth bot | m | Braeckman, Ulrike | ||
| 10 | DEPTH, sediment/rock | Depth sed | m | Braeckman, Ulrike | Geocode | |
| 11 | Sample comment | Sample comment | Braeckman, Ulrike | |||
| 12 | Ammonia | NH3 | µmol/l | Braeckman, Ulrike | Continuous Segmented Flow Analyzer, SEAL Analytical, QuAAtro39 | |
| 13 | Nitrite | [NO2]- | µmol/l | Braeckman, Ulrike | Continuous Segmented Flow Analyzer, SEAL Analytical, QuAAtro39 | |
| 14 | Nitrate and Nitrite | [NO3]- + [NO2]- | µmol/l | Braeckman, Ulrike | Continuous Segmented Flow Analyzer, SEAL Analytical, QuAAtro39 | |
| 15 | Phosphate | [PO4]3- | µmol/l | Braeckman, Ulrike | Continuous Segmented Flow Analyzer, SEAL Analytical, QuAAtro39 | |
| 16 | Silicate | Si(OH)4 | µmol/l | Braeckman, Ulrike | Continuous Segmented Flow Analyzer, SEAL Analytical, QuAAtro39 | |
| 17 | Nitrate | [NO3]- | µmol/l | Braeckman, Ulrike | Continuous Segmented Flow Analyzer, SEAL Analytical, QuAAtro39 | |
| 18 | Carbon, inorganic, dissolved | DIC | mmol/l | Braeckman, Ulrike | Continuous Segmented Flow Analyzer, SEAL Analytical, QuAAtro39 |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
1956 data points