Chung, Ailsa; Parrenin, Frédéric; Steinhage, Daniel; Mulvaney, Robert; Martín, Carlos; Cavitte, Marie G P; Lilien, David A; Helm, Veit; Taylor, Drew; Gogineni, Prasad; Ritz, Catherine; Frezzotti, Massimo; O'Neill, Charles; Miller, Heinrich; Dahl-Jensen, Dorthe; Eisen, Olaf (2024): Modelled age-depth profiles of two ice core drill sites on Little Dome C, Antarctica [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.966738
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Abstract:
We used a 1D numerical model constrained by radar horizons to find the age-depth profiles at two locations on Little Dome C (LDC), Antarctica - the European Beyond EPICA - Oldest Ice project drill site (BELDC; 75.29917 °S, 122.44516 °E) and the Australian Million Year Ice Core project drill site (MYIC; 75.34132 °S, 122.52059 °E). Further details on the model can be found in the associated publication (Chung et al., 2023; The Cryosphere). The model was constrained by two different sets of radar horizons. 1. The radar survey conducted over the Dome C region conducted by the British Antarctic Survey over the 2016-17 and 2017-18 Antarctic field seasons using the sledge-borne DEep LOoking Radio Echo Sounder (DELORES; Mulvaney et al., 2023). 2. The radar survey conducted during the 2019-20 Antarctic field season in a collaboration between the University of Alabama (UA), the University of Copenhagen (CPH) and the Alfred Wegener Institute (AWI), using the Little Dome C-Very High Frequency radar system (LDC-VHF; Chung et al., 2023; PANGAEA). Applying the 1D model to the two radar datasets at the two ice core location result in the four predicted age-depth profiles that we present here: BELDC_DELORES, BELDC_LDC-VHF, MYIC_DELORES and MYIC_LDC-VHF. The age-depth profiles, extend to the deepest point where modelled age density < 20 ka/m - the threshold for which a paleoclimatic signal can reasonably be extracted.
Related to:
Chung, Ailsa; Parrenin, Frédéric; Steinhage, Daniel; Mulvaney, Rob; Martín, Carlos; Cavitte, Marie G P; Lilien, David A; Helm, Veit; Taylor, Drew; Gogineni, Prasad; Ritz, Catherine; Frezzotti, Massimo; O'Neill, Charles; Miller, Heinrich; Dahl-Jensen, Dorthe; Eisen, Olaf (2023): Internal reflecting horizons at Little Dome C, Antarctica. PANGAEA, https://doi.org/10.1594/PANGAEA.957176
Chung, Ailsa; Parrenin, Frédéric; Steinhage, Daniel; Mulvaney, Robert; Martín, Carlos; Cavitte, Marie G P; Lilien, David A; Helm, Veit; Taylor, Drew; Gogineni, Prasad; Ritz, Catherine; Frezzotti, Massimo; O'Neill, Charles; Miller, Heinrich; Dahl-Jensen, Dorthe; Eisen, Olaf (2023): Stagnant ice and age modelling in the Dome C region, Antarctica. The Cryosphere, 17(8), 3461-3483, https://doi.org/10.5194/tc-17-3461-2023
Mulvaney, Robert; Frezzotti, Massimo; Ritz, Catherine; Martín, Carlos; Rix, Julius; Chung, Ailsa (2023): Internal reflecting horizons in the Dome C region of Antarctica. PANGAEA, https://doi.org/10.1594/PANGAEA.963470
Project(s):
Beyond EPICA - Oldest Ice (BE-OI)
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:
Median Latitude: -75.320245 * Median Longitude: 122.482875 * South-bound Latitude: -75.341320 * West-bound Longitude: 122.445160 * North-bound Latitude: -75.299170 * East-bound Longitude: 122.520590
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Size:
4 datasets
Download Data
Datasets listed in this publication series
- Chung, A; Parrenin, F; Steinhage, D et al. (2024): Modelled age-depth profile at location of the Beyond EPICA drill site (BELDC) based on the sledge-borne DEep LOoking Radio Echo Sounder (DELORES) survey. https://doi.org/10.1594/PANGAEA.966739
- Chung, A; Parrenin, F; Steinhage, D et al. (2024): Modelled age-depth profile at location of the Beyond EPICA drill site (BELDC) based on the Little Dome C-Very High Frequency radar system (LDC-VHF) survey. https://doi.org/10.1594/PANGAEA.966745
- Chung, A; Parrenin, F; Steinhage, D et al. (2024): Modelled age-depth profile at location of the Million Year Ice Core project drill site (MYIC) based on the sledge-borne DEep LOoking Radio Echo Sounder (DELORES) survey. https://doi.org/10.1594/PANGAEA.966746
- Chung, A; Parrenin, F; Steinhage, D et al. (2024): Modelled age-depth profile at location of the Million Year Ice Core project drill site (MYIC) based on the Little Dome C-Very High Frequency radar system (LDC-VHF) survey. https://doi.org/10.1594/PANGAEA.966747