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 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 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.966746, In: Chung, A et al. (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 profile at the the Australian Million Year Ice Core project drill site (MYIC; 75.34132 °S, 122.52059 °E) on Little Dome C (LDC), Antarctica. Further details on the model can be found in the associated publication: Chung et al., 2023 (The Cryosphere). The model was constrained by 20 horizons from 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). The age-depth profile extends 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, 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 [dataset publication series]. 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:
Latitude: -75.341320 * Longitude: 122.520590
Minimum DEPTH, ice/snow: 0.0 m * Maximum DEPTH, ice/snow: 2504.5 m
Event(s):
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | DEPTH, ice/snow | Depth ice/snow | m | Chung, Ailsa | Geocode | |
| 2 | Ice age | Ice age | ka BP | Chung, Ailsa | Age, 1D numerical model | Modelled age |
| 3 | Ice age, uncertainty | Ice age unc | ka | Chung, Ailsa | Age, 1D numerical model | Modelled age |
| 4 | Age density | Age density | ka/m | Chung, Ailsa | ||
| 5 | Accumulation rate in ice equivalent per year | Acc rate ice per year | m/a | Chung, Ailsa | ||
| 6 | Thinning function | TF | Chung, Ailsa | |||
| 7 | Velocity, vertical | V vert | m/a | Chung, Ailsa |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
5268 data points
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