Behrens, Melanie; Hörhold, Maria; Dallmayr, Remi; Laepple, Thomas; Freitag, Johannes; Wilhelms, Frank (2025): 100km-scale isotopic (d18O, dD) variability of the top-meter between B31 and Kohnen, Dronning Maud Land (M samples) [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.974778
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Published: 2025-04-09 • DOI registered: 2025-04-09
Abstract:
Isotopic composition of the top-meter of the snowpack along a 115km traverse between B31 and D50, near Kohnen station, Dronning-Maud Land, East-Antarctica. Site D2 refers to the firn core drilling site B31. At each sampling site, profiles were sampled at 10 m distance in 90 m long trenches:
_R samples using the dual-tube sampling technique (Dallmayr et al., 2020), 3 subsections of the top-1m were sampled and at sites C4, C5, D2, D7, D24, D38, the top-1m of the trenches were sampled with the dual-tube and 5 single liners were taken and subsampled to 1 - 3 cm resolution (Hirsch, Nora; Hörhold, Maria; Dallmayr, Remi; Laepple, Thomas; Freitag, Johannes; Meyer, Hanno; Weiner, Mikaela (2023): Stable water isotopologues of arrays of high resolution 1 m snow cores from across Dronning Maud Land, East Antarctic Plateau [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.956273)
_M samples: Mixed 4 subsections of the top-1.2m of the 90m long trenches excavated by Pistenbully.
All isotopic analysis were realized by CRDS (Cavity-Ring-Down Spectroscopy) measurements at the Alfred-Wegener-Institut Helmholtz-Zentrum für Polar-und Meeresforschung in Bremerhaven (instrument models L-2120-i, L-2140-i, Picarro Inc.). The samples were shipped frozen to the Alfred-Wegener-Institut and stored at -25°C. Prior to measurements the samples were melted in the sample bags at room temperature. The measurement set-up followed the Van-Geldern Protocol. Each sample was injected four times and the standard deviation is computed.
Keyword(s):
Supplement to:
Dallmayr, Remi; Laepple, Thomas; et al. (in prep.): Topographic effect creates non-climatic variations in ice-core based temperature records of the last millennium in Dronning Maud Land Antarctica.
Related to:
Behrens, Melanie; Hörhold, Maria; Dallmayr, Remi; Laepple, Thomas; Freitag, Johannes; Wilhelms, Frank (2025): 100km-scale isotopic (d18O, dD) variability of the top-meter between B31 and Kohnen, Dronning Maud Land (R samples) [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.974749 (Version 3, R samples)
Original version:
Behrens, Melanie; Hörhold, Maria; Dallmayr, Remi; Freitag, Johannes; Laepple, Thomas; Wilhelms, Frank (2023): 100km-scale isotopic (δ18O, δD) variability of the top-meter between B31 and Kohnen, Droning Maud Land [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.936681 (Version 2 (2023))
Dallmayr, Remi; Freitag, Johannes; Hörhold, Maria; Laepple, Thomas; Wilhelms, Frank (2021): 100km-scale isotopic (δ18O, δD) variability of the top-meter between B31 and Kohnen, Droning Maud Land [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.935029 (Version 1 (2021))
Coverage:
Median Latitude: -75.376148 * Median Longitude: -2.240289 * South-bound Latitude: -75.588150 * West-bound Longitude: -3.403600 * North-bound Latitude: -74.997690 * East-bound Longitude: -0.087440
Date/Time Start: 2018-12-10T00:00:00 * Date/Time End: 2018-12-16T00:00:00
Minimum DEPTH, ice/snow: 0.0 m * Maximum DEPTH, ice/snow: 1.2 m
Event(s):
ANT-Land_2018_KohnenQK * Latitude Start: -75.581500 * Longitude Start: -3.430330 * Latitude End: -74.997690 * Longitude End: -0.087440 * Date/Time Start: 2018-12-10T00:00:00 * Date/Time End: 2018-12-16T00:00:00 * Location: Antarctica * Campaign: ANT-Land_2018_KohnenQK1 * Basis: Kohnen Station * Method/Device: Dual-tube sampling (DUAL-TUBE)
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | LONGITUDE | Longitude | Dallmayr, Remi | Geocode | ||
| 2 | LATITUDE | Latitude | Dallmayr, Remi | Geocode | ||
| 3 | Sample code/label | Sample label | Dallmayr, Remi | sample description see abstract | ||
| 4 | Sample mass | Samp m | g | Dallmayr, Remi | with bag | |
| 5 | Site | Site | Dallmayr, Remi | label | ||
| 6 | Site | Site | Dallmayr, Remi | number | ||
| 7 | Position | Position | Dallmayr, Remi | |||
| 8 | DEPTH, ice/snow | Depth ice/snow | m | Dallmayr, Remi | Geocode – top | |
| 9 | DEPTH, ice/snow | Depth ice/snow | m | Dallmayr, Remi | Geocode – bottom | |
| 10 | Replicate | Repl | Dallmayr, Remi | |||
| 11 | Sample ID | Sample ID | Dallmayr, Remi | Sample.name.isotopes | ||
| 12 | δ18O, water | δ18O H2O | ‰ SMOW | Dallmayr, Remi | Cavity ring-down spectroscopy (CRDS), isotopic water analyzer, Picarro Inc., L2120-i, L2140-i | |
| 13 | δ18O, water, standard deviation | δ18O H2O std dev | ± | Dallmayr, Remi | Cavity ring-down spectroscopy (CRDS), isotopic water analyzer, Picarro Inc., L2120-i, L2140-i | |
| 14 | δ Deuterium, water | δD H2O | ‰ SMOW | Dallmayr, Remi | Cavity ring-down spectroscopy (CRDS), isotopic water analyzer, Picarro Inc., L2120-i, L2140-i | |
| 15 | δ Deuterium, water, standard deviation | δD H2O std dev | ± | Dallmayr, Remi | Cavity ring-down spectroscopy (CRDS), isotopic water analyzer, Picarro Inc., L2120-i, L2140-i |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
1495 data points