Modelled age-depth profiles of two ice core drill sites on Little Dome C, Antarctica

DOI

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.

Identifier
DOI https://doi.org/10.1594/PANGAEA.966738
Related Identifier References https://doi.org/10.1594/PANGAEA.957176
Related Identifier References https://doi.org/10.5194/tc-17-3461-2023
Related Identifier References https://doi.org/10.1594/PANGAEA.963470
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.966738
Provenance
Creator Chung, Ailsa (ORCID: 0000-0003-3822-845X); Parrenin, Frédéric ORCID logo; Steinhage, Daniel; Mulvaney, Robert ORCID logo; Martín, Carlos; Cavitte, Marie G P ORCID logo; Lilien, David A ORCID logo; Helm, Veit ORCID logo; Taylor, Drew ORCID logo; Gogineni, Prasad; Ritz, Catherine ORCID logo; Frezzotti, Massimo ORCID logo; O'Neill, Charles; Miller, Heinrich ORCID logo; Dahl-Jensen, Dorthe ORCID logo; Eisen, Olaf (ORCID: 0000-0002-6380-962X)
Publisher PANGAEA
Publication Year 2024
Funding Reference Horizon 2020 https://doi.org/10.13039/501100007601 Crossref Funder ID 730258 doi:10.3030/730258 Beyond EPICA - Oldest Ice; Horizon 2020 https://doi.org/10.13039/501100007601 Crossref Funder ID 955750 doi:10.3030/955750 Research and training network on understanding Deep icE corE Proxies to Infer past antarctiC climatE dynamics (DEEPICE)
Rights Creative Commons Attribution 4.0 International; https://creativecommons.org/licenses/by/4.0/
OpenAccess true
Representation
Resource Type Publication Series of Datasets; Collection
Format application/zip
Size 4 datasets
Discipline Earth System Research
Spatial Coverage (122.445W, -75.341S, 122.521E, -75.299N)