Ardoin, Lisa; Gkinis, Vasileios; Fripiat, François; Tison, Jean-Louis; Dahl-Jensen, Dorthe; Steffensen, Jørgen Peder (2025): Water isotopic measurements of the basal ice layers of the 1966 Camp Century ice core (Greenland) [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.983903
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Published: 2025-07-17 • DOI registered: 2025-08-15
Abstract:
The dataset comprises discrete water isotopic measurements of the last 27m of the Camp Century ice core that was drilled in 1966. Samples from 5 to 10 g of Camp Century ice were collected at intervals of 40 cm, with a refined sampling resolution in the lower 2 m, where intervals were reduced to approximately 15 cm. The samples were melted at ambient temperature and filtered with 2 µm polyether sulfone filters before analyses to remove the debris. The water isotopes measurements were performed at the Centre for Ice and Climate, Niels Bohr Institute (Copenhagen, Denmark) in 2023 using a cavity ring-down spectrometer. Measurements are referenced to Vienna Standard Mean Ocean Water (VSMOW) using two in-house standards waters, bracketing the sample δ17O, δ18O and δD values (i.e., δ17O (‰) = (17O/16O)sample/(17O/16O)SMOW - 1; δ18O (‰) = (18O/16O)sample/(18O/16O)SMOW - 1; δD (‰) = (D/H)sample/(D/H)SMOW - 1). Standard deviation (SD) was calculated using internal standards during each batch of measurements, as well as by performing triplicate analysis for each sample. For our dataset, we report median 1 SD reproducibility of 0.04 ‰, 0.04 ‰ and 0.35 ‰ for δ18O, δ17O and δD respectively.
References:
Bierman, Paul R; Christ, Andrew J; Collins, Catherine M; Mastro, Halley M; Souza, Juliana; Blard, Pierre-Henri; Brachfeld, Stefanie A; Courville, Zoe R; Rittenour, Tammy M; Thomas, Elizabeth K; Tison, Jean-Louis; Fripiat, François (2024): Scientific history, sampling approach, and physical characterization of the Camp Century subglacial material, a rare archive from beneath the Greenland Ice Sheet. The Cryosphere, 18(9), 4029-4052, https://doi.org/10.5194/tc-18-4029-2024
Herron, Susan; Langway, Chester C Jr (1979): The Debris-Laden Ice at the Bottom of the Greenland Ice Sheet. Journal of Glaciology, 23(89), 193-207, https://doi.org/10.3189/S002214300002983X
Funding:
Horizon 2020 (H2020), grant/award no. 955750: Research and training network on understanding Deep icE corE Proxies to Infer past antarctiC climatE dynamics (DEEPICE)
Coverage:
Latitude: 77.166000 * Longitude: -61.133000
Event(s):
Comment:
The sediment depth is considered to be 1375 according to Herron & Langway (1979). See Biermans et al. (2024) for further discussions about the sediment depth beneath the ice sheet.
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Bag number | Bag | Ardoin, Lisa | |||
| 2 | Depth, top/min | Depth top | m | Ardoin, Lisa | ||
| 3 | Depth, bottom/max | Depth bot | m | Ardoin, Lisa | ||
| 4 | Depth, sediment/rock, top/minimum | Depth sed top | m | Ardoin, Lisa | ||
| 5 | Depth, sediment/rock, bottom/maximum | Depth sed bot | m | Ardoin, Lisa | ||
| 6 | δ17O | δ17O | ‰ | Ardoin, Lisa | Cavity ring-down spectroscopy (CRDS), isotopic water analyzer, Picarro Inc., L2140-i; coupled with A0212 vaporiser | vs. VSMOW (± 0.04) |
| 7 | δ18O | δ18O | ‰ | Ardoin, Lisa | Cavity ring-down spectroscopy (CRDS), isotopic water analyzer, Picarro Inc., L2140-i; coupled with A0212 vaporiser | vs. VSMOW (± 0.04) |
| 8 | Δδ Deuterium | ΔδD | ‰ | Ardoin, Lisa | Cavity ring-down spectroscopy (CRDS), isotopic water analyzer, Picarro Inc., L2140-i; coupled with A0212 vaporiser | vs. VSMOW (± 0.04) |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
664 data points