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

doi:doi:10.1594/PANGAEA.939445

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 (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.

BibTex:

@dataset{Gkinis_Vasileios_and_Dahl-Jensen_Dorthe_and_Steffensen_Jørgen_Peder_and_Vinther_Bo_Møllesøe_and_Landais_Amaëlle_and_Jouzel_Jean_and_Masson-Delmotte_Valerie_and_Cattani_Olivier_and_Minster_Bénédicte_and_Grisart_Antoine_and_Hörhold_Maria_and_Stenni_Barbara_and_Selmo_Enricomaria_2021,
    abstract = {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.},
    author = {Gkinis, Vasileios and Dahl-Jensen, Dorthe and Steffensen, Jørgen Peder and Vinther, Bo Møllesøe and Landais, Amaëlle and Jouzel, Jean and Masson-Delmotte, Valerie and Cattani, Olivier and Minster, Bénédicte and Grisart, Antoine and Hörhold, Maria and Stenni, Barbara and Selmo, Enricomaria},
    doi = {10.1594/PANGAEA.939445},
    institution = {PANGAEA (Land Surface)},
    keyword = {'Antarctica', 'Dome C', 'EPICA', 'Isotope ratio', 'd18O', 'ice cores', 'mass spectrometry', 'water isotopes'},
    title = {Oxygen-18 isotope ratios from the EPICA Dome C ice core at 11 cm resolution},
    url = {https://service.tib.eu/ldmservice/vdataset/png-doi-10-1594-pangaea-939445},
    year = {2021}
}