Porewater nutrients of the Northeast Greenland (NEG) shelf sediments from POLARSTERN cruise PS109
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| Title: | Porewater nutrients of the Northeast Greenland (NEG) shelf sediments from POLARSTERN cruise PS109 |
|---|---|
| Authors: | Braeckman, Ulrike, Felden, Janine |
| Publisher Information: | PANGAEA |
| Publication Year: | 2024 |
| Collection: | PANGAEA - Data Publisher for Earth & Environmental Science (AWI Bremerhaven / MARUM Bremen) |
| Subject Terms: | Ammonia, ARK-XXXI/4, Carbon, inorganic, dissolved, Continuous Segmented Flow Analyzer, SEAL Analytical, QuAAtro39, Date/Time of event, Depth, bottom/max, sediment/rock, top/min, dissolved inorganic carbon (DIC), Elevation of event, Event label, FRAM, FRontiers in Arctic marine Monitoring, Latitude of event, Longitude of event, Method/Device of event, Multicorer with television, nitrate, Nitrate and Nitrite, nitrite, nutrients, Phosphate, Polarstern, PS109, PS109_105-1 |
| Subject Geographic: | 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 |
| Description: | 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). |
| Document Type: | dataset |
| File Description: | text/tab-separated-values, 1956 data points |
| Language: | English |
| Relation: | Bodur, Yasemin V; Renaud, Paul E; Lins, Lidia; Da Costa Monteiro, Luana; Ambrose, William G Jr; Felden, Janine; Krumpen, Thomas; Wenzhöfer, Frank; Włodarska-Kowalczuk, Maria; Braeckman, Ulrike (2024): Weakened pelagic-benthic coupling on an Arctic outflow shelf (Northeast Greenland) suggested by benthic ecosystem changes. Elementa - Science of the Anthropocene, 12(1), 00005, https://doi.org/10.1525/elementa.2023.00005; https://doi.pangaea.de/10.1594/PANGAEA.959549; https://doi.org/10.1594/PANGAEA.959549 |
| DOI: | 10.1594/PANGAEA.959549 |
| Availability: | https://doi.pangaea.de/10.1594/PANGAEA.959549 https://doi.org/10.1594/PANGAEA.959549 |
| Rights: | CC-BY-4.0: Creative Commons Attribution 4.0 International ; Access constraints: unrestricted ; info:eu-repo/semantics/openAccess |
| Accession Number: | edsbas.26C03F83 |
| Database: | BASE |
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