Oxygen-18 isotope ratios from the EPICA Dome C ice core at 11 cm resolution

Abstract: We present here a high resolution (0.11 m) dataset of the isotopic composition of the ice (δ¹⁸O) from the EPICA Dome-C ice core. The dataset covers the depth range 7.81-3189.89 m (0.05-802.427 ka). Analysis is performed in Copenhagen with a CO~2~ equilibration Mass Spectrometry system (Fin...

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Bibliographic Details
Main Authors: Gkinis, Vasileios, Dahl-Jensen, Dorthe, Steffensen, Jørgen Peder, Vinther, Bo Møllesøe, Landais, Amaelle, Jouzel, Jean, Masson-Delmotte, Valerie, Cattani, Olivier, Minster, Bénédicte, Grisart, Antoine, Hörhold, Maria, Stenni, Barbara, Selmo, Enricomaria
Format: Dataset
Language:English
Published: PANGAEA 2021
Subjects:
Age
dated
Antarctica
Antarctic ice core chronology (AICC2012)
d18O
Depth
bottom/max
sediment/rock
top/min
Dome C
EDC
EPICA
EPICA Dome C
European Project for Ice Coring in Antarctica
ice cores
ICEDRILL
Ice drill
isotope ratio
Mass spectrometer Finnigan MAT 251
mass spectrometry
water isotopes
δ18O
Antarctic
Annals of Glaciology
Antarc*
ice core
Online Access:https://doi.pangaea.de/10.1594/PANGAEA.939445
https://doi.org/10.1594/PANGAEA.939445
Description
Summary:Abstract: We present here a high resolution (0.11 m) dataset of the isotopic composition of the ice (δ¹⁸O) from the EPICA Dome-C ice core. The dataset covers the depth range 7.81-3189.89 m (0.05-802.427 ka). Analysis is performed in Copenhagen with a CO~2~ equilibration Mass Spectrometry system (Finnegan MAT 251). Samples of 5 ml are equilibrated with CO~2~ for 6 hours under vibrations, thereafter injected to the mass spectrometer where the ¹⁸O/¹⁶O ratio is obtained on masses 46 and 44. All measurements reported on the SMOW-SLAP scale using a 2-point linear calibration (standards used: Crete: -33.61 ‰ and DC02: -54.11 ‰ . The combined uncertainty of the record is 0.07 ‰. We interpolate the dataset on the AICC2012 chronology.

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