Thomas, David Neville; Papadimitriou, Stathys (2026): Sea ice brine biogeochemistry measured during RV POLARSTERN cruise ANT-XXII aka ISPOL in 2004/05 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.990321
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Published: 2026-02-18 • DOI registered: 2026-03-19
Abstract:
During the ISPOL expedition of RV Polarstern in 2004/05 sea ice brine samples (from sackhole sampling) were routinely taken. Subsequent analyses included pH, temperature, salinity, dissolved inorganic and organic (DOC & DON) nutrients (nitrite, nitrate, ammonium, phosphate, silicate), dissolved oxygen, alkalinity, 13C of DIC, chlorophyll, Particulate organic carbon and nitrogen.
Related to:
El Naggar, Saad El Dine; Dieckmann, Gerhard S; Haas, Christian; Schröder, Michael; Spindler, Michael (2007): The Expeditions ANTARKTIS-XXII/1 and XXII/2 of the Research Vessel Polarstern in 2004/2005. Berichte zur Polar- und Meeresforschung = Reports on Polar and Marine Research, 551, 259 pp, https://doi.org/10.2312/BzPM_0551_2007
References:
Papadimitriou, Stathys; Kennedy, Hilary; Krell, Andreas (2007): Biogeochemical composition of natural sea ice brines from the Weddell Sea during early austral summer. Limnology and Oceanography, 52(5), 1809-1823, https://doi.org/10.4319/lo.2007.52.5.1809
Underwood, Graham J C; Aslam, Shazia N; Michel, Christine; Niemi, Andrea; Norman, Louiza; Meiners, Klaus M; Laybourn-Parry, Johanna; Paterson, Harriet; Thomas, David Neville (2013): Broad-scale predictability of carbohydrates and exopolymers in Antarctic and Arctic sea ice. Proceedings of the National Academy of Sciences of the United States of America, 110(39), 15734-15739, https://doi.org/10.1073/pnas.1302870110
Coverage:
Median Latitude: -68.025030 * Median Longitude: -55.183189 * South-bound Latitude: -68.185540 * West-bound Longitude: -55.584710 * North-bound Latitude: -67.564630 * East-bound Longitude: -54.890280
Date/Time Start: 2004-12-01T12:00:00 * Date/Time End: 2004-12-29T12:00:00
Minimum DEPTH, ice/snow: 0.200 m * Maximum DEPTH, ice/snow: 0.930 m
Event(s):
ANT-XXII/2_drift-04 * Latitude: -68.172650 * Longitude: -54.890280 * Date/Time: 2004-12-01T12:00:00 * Location: Weddell Sea * Campaign: ANT-XXII/2 (PS67 ISPOL) * Basis: Polarstern * Method/Device: Ice station (ICE)
ANT-XXII/2_drift-05 * Latitude: -68.185540 * Longitude: -55.112590 * Date/Time: 2004-12-02T12:00:00 * Location: Weddell Sea * Campaign: ANT-XXII/2 (PS67 ISPOL) * Basis: Polarstern * Method/Device: Ice station (ICE)
ANT-XXII/2_drift-08 * Latitude: -68.114040 * Longitude: -55.258980 * Date/Time: 2004-12-05T12:00:00 * Location: Weddell Sea * Campaign: ANT-XXII/2 (PS67 ISPOL) * Basis: Polarstern * Method/Device: Ice station (ICE)
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Thomas, David Neville | |||
| 2 | DATE/TIME | Date/Time | Thomas, David Neville | Geocode | ||
| 3 | LATITUDE | Latitude | Thomas, David Neville | Geocode | ||
| 4 | LONGITUDE | Longitude | Thomas, David Neville | Geocode | ||
| 5 | Sample ID | Sample ID | Thomas, David Neville | |||
| 6 | DEPTH, ice/snow | Depth ice/snow | m | Thomas, David Neville | Geocode – sackhole depth which is measured from the top of the ice to bottom of the sackhole | |
| 7 | Temperature, brine | T brine | °C | Thomas, David Neville | Thermometer, HANNA Instruments, HI93530 [calibrated K-Thermocouple probe] | |
| 8 | Salinity | Sal | Thomas, David Neville | Conductivity meter, SEMAT, Cond 315i/SET; measured with conductivity probe, WTW, TetraCon 325 | ||
| 9 | Phosphate | [PO4]3- | µmol/kg | Thomas, David Neville | Flow injection analyzer, Lachat Instruments, QuikChem 8000 | |
| 10 | Silicate | Si(OH)4 | µmol/kg | Thomas, David Neville | Flow injection analyzer, Lachat Instruments, QuikChem 8000 | |
| 11 | Nitrite | [NO2]- | µmol/kg | Thomas, David Neville | Flow injection analyzer, Lachat Instruments, QuikChem 8000 | |
| 12 | Nitrate and Nitrite | [NO3]- + [NO2]- | µmol/kg | Thomas, David Neville | Flow injection analyzer, Lachat Instruments, QuikChem 8000 | |
| 13 | Ammonium | [NH4]+ | µmol/kg | Thomas, David Neville | Fluorescence spectrophotometer, Hitachi, F-2000 | |
| 14 | Carbon, organic, dissolved | DOC | µmol/kg | Thomas, David Neville | TOC analyzer, MQ 1001 | |
| 15 | Nitrogen, organic, dissolved | DON | µmol/kg | Thomas, David Neville | Flow injection analyser, Lachat Instruments | determined by subtraction of NO3 and NH4 from the total dissolved nitrogen (TDN) analyzed by FIA on the LACHAT autoanalyzer using on-line peroxodisulfate oxidation coupled with ultraviolet radiation at pH 9.0 and 100°C |
| 16 | Chlorophyll a | Chl a | µg/l | Thomas, David Neville | Fluorometer, Turner Design, TD-700 | samples filtered (precombusted GF/F), extracted in 90% acetone and analysed on fluorometer |
| 17 | Phaeopigments | Phae | µg/l | Thomas, David Neville | Fluorometer, Turner Design, TD-700 | samples filtered (precombusted GF/F), extracted in 90% acetone, acidified and analysed on fluorometer |
| 18 | Oxygen | O2 | µmol/kg | Thomas, David Neville | Winkler titration with photometric end-point detection | |
| 19 | pH | pH | Thomas, David Neville | pH meter (Metrohm electrodes) | measured at laboratory temperature with a Metrohm pH meter, platinum temperature probe, Ag/AgCl reference electrode, and glass indicator electrode calibrated daily with NBS standards | |
| 20 | Alkalinity, total | AT | µmol/kg | Thomas, David Neville | Potentiometric titration | potentiometric titration with 0.05 N HCl (Titrisol) using a Metrohm system of automatic burette, pH meter, platinum temperature probe, Ag/AgCl reference electrode, and glass indicator electrode calibrated daily with NBS standards |
| 21 | Carbon, inorganic, dissolved | DIC | µmol/kg | Thomas, David Neville | Vacuum line manometer, Chell instruments | determined following in vacuo reaction with 85% H3PO4 and cryogenic CO2 gas distillation using an in-line manometer |
| 22 | δ13C, dissolved inorganic carbon | δ13C DIC | ‰ PDB | Thomas, David Neville | Isotope ratio mass spectrometer, PDZ Europa Ltd., 20-20 | determined on a mass spectrometer on the cryo-distilled total sample CO2 collected following in-line manometric dissolved inorganic carbon determination |
| 23 | Carbon, organic, particulate | POC | µmol/l | Thomas, David Neville | CN analyzer, Europa Scientific | samples filtered (precombusted GF/F) and acidified and dried. Filters analysed with a CN analyser, using acetanilide as a standard |
| 24 | Nitrogen, organic, particulate | PON | µmol/l | Thomas, David Neville | CN analyzer, Europa Scientific | samples filtered (precombusted GF/F) and acidified and dried. Filters analysed with a CN analyser, using acetanilide as a standard |
| 25 | Carbon, organic, particulate/Nitrogen, organic, particulate ratio | POC/PON | mol/mol | Thomas, David Neville | ||
| 26 | δ13C, particulate organic carbon | δ13C POC | ‰ PDB | Thomas, David Neville | Mass spectrometer, VG SIRA II and Mass spectrometer, PDZ Europa Ltd. | samples filtered (precombusted GF/F), acidified and dried. The Isotopic measurements of carbon were determined on CO2 generated by vacuum combusion and isotopes measured using VG SIRA II and PDZ-EUROPA 20/20 isotope ratio mass spectrometers |
| 27 | δ15N, particulate organic nitrogen | δ15N PON | ‰ air | Thomas, David Neville | Mass spectrometer, VG SIRA II | samples filtered (precombusted GF/F), dried and dessicated. The Isotopic measurements of nitrogen were determined on N2 generated by vacuum combusion. Isotopes measured on a SIRA VG II mass spectrometer |
| 28 | δ18O, ice | δ18O ice | ‰ SMOW | Thomas, David Neville | Isotope ratio mass spectrometer, PDZ Europa Ltd., 20-20 | was conducted by off-line equilibration with CO2 and subsequent measurement of the oxygen isotope ratios using a PDZ–EUROPA GEO 20/20 mass spectrometer, with normalisation relative to North Sea seawater |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC) * Processing Level: PANGAEA data processing level 3 (ProcLevel3)
Size:
755 data points