Shin, Jinhwa; Nehrbass-Ahles, Christoph; Grilli, Roberto; Beeman, Jai Chowdhry; Parrenin, Frédéric; Teste, Grégory; Landais, Amaëlle; Schmidely, Loïc; Silva, Lucas; Schmitt, Jochen; Bereiter, Bernhard; Stocker, Thomas F; Fischer, Hubertus; Chappellaz, Jérôme A (2021): Revised gas age for the Marine Isotope Stage 6 period (190-135 ka) from the EPICA Dome C ice core [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.929698
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Abstract:
We improved the relative age uncertainties between ice and gas in the EDC core using δ15N-based estimates of firn column thickness. A new chronology was established using new δ15N data during the early MIS 6 in this study and published data from Landais et al. (2013), see doi:10.1594/PANGAEA.929513.
Isotopes of molecular nitrogen in air bubbles were measured from EDC at the Laboratoire des Sciences du Climat et de l'Environnement (LSCE), France. The gas was extracted from the ice by a wet extraction technique and the released air was analysed by a dual-inlet mass spectrometer (Delta V Plus; Thermo Scientific) (Bréant et al., 2019). In total, 151 samples from 88 depth intervals (63 duplicates) between the depths of 2124.7 and 1875.0 m below the surface were measured, corresponding to the time interval from 205 to 154 kyr BP.
Related to:
Shin, Jinhwa; Nehrbass-Ahles, Christoph; Grilli, Roberto; Beeman, Jai Chowdhry; Parrenin, Frédéric; Teste, Grégory; Landais, Amaëlle; Schmidely, Loïc; Silva, Lucas; Schmitt, Jochen; Bereiter, Bernhard; Stocker, Thomas F; Fischer, Hubertus; Chappellaz, Jérôme A (2020): Millennial-scale atmospheric CO2 variations during the Marine Isotope Stage 6 period (190–135 ka). Climate of the Past, 16(6), 2203-2219, https://doi.org/10.5194/cp-16-2203-2020
Shin, Jinhwa; Nehrbass-Ahles, Christoph; Grilli, Roberto; Beeman, Jai Chowdhry; Parrenin, Frédéric; Teste, Grégory; Landais, Amaëlle; Schmidely, Loïc; Silva, Lucas; Schmitt, Jochen; Bereiter, Bernhard; Stocker, Thomas F; Fischer, Hubertus; Chappellaz, Jérôme A (2021): Atmospheric nitrogen isotopes of the Marine Isotope Stage 6 period (190-135 ka) from the EPICA Dome C ice core. PANGAEA, https://doi.org/10.1594/PANGAEA.929513
Source:
Landais, Amaëlle; Dreyfus, Gabrielle; Capron, Emilie; Jouzel, Jean; Masson-Delmotte, Valerie; Roche, D M; Prié, F; Caillon, Nicolas; Chappellaz, Jérôme A; Leuenberger, Markus Christian; Lourantou, Anna; Parrenin, Frédéric; Raynaud, Dominique; Teste, Grégory (2013): Two-phase change in CO2, Antarctic temperature and global climate during Termination II. Nature Geoscience, 6(12), 1062-1065, https://doi.org/10.1038/ngeo1985
Project(s):
Funding:
Fifth Framework Programme (FP5), grant/award no. EVK2-CT-2000-00077: European Project for Ice Coring in Antarctica
Fourth Framework Programme (FP4), grant/award no. ENV4980702: European Project for Ice Coring in Antarctica
Coverage:
Latitude: -75.100000 * Longitude: 123.350000
Date/Time Start: 1993-01-01T00:00:00 * Date/Time End: 2004-12-31T00:00:00
Minimum DEPTH, ice/snow: 1773.8300 m * Maximum DEPTH, ice/snow: 2091.7875 m
Event(s):
EDC (EPICA Dome C) * Latitude: -75.100000 * Longitude: 123.350000 * Date/Time Start: 1993-01-01T00:00:00 * Date/Time End: 2004-12-31T00:00:00 * Elevation: 3233.0 m * Recovery: 3300 m * Location: Dome C, Antarctica * Campaign: Dome C * Method/Device: Ice drill (ICEDRILL) * Comment: Drill site is 56 km from the site of a previous Dome C core that provided records extending into the last glacial period, and 560 km from the site of the Vostok cores. The completion of the Dome C core was delayed when the first drilling became stuck at 788 m in 1999 (EDC96).
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | DEPTH, ice/snow | Depth ice/snow | m | Shin, Jinhwa | Geocode | |
| 2 | Gas age | Gas age | ka BP | Shin, Jinhwa | ||
| 3 | Gas age, standard deviation | Gas age std dev | ± | Shin, Jinhwa | Relative age uncertainty between air and ice (1 sigma) | |
| 4 | Gas age, standard deviation | Gas age std dev | ± | Shin, Jinhwa | Revised gas age uncertainty (1 sigma) |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
327 data points