A detailed radiostratigraphic data set for the central East Antarctic Plateau spanning from the Holocene to the mid-Pleistocene

• Published in: Earth System Science Data
• Main Authors: Cavitte, Marie, Young, Duncan, Mulvaney, Robert, Ritz, Catherine, Greenbaum, Jamin, Ng, Gregory, Kempf, Scott, Quartini, Enrica, Muldoon, Gail, Paden, John, Frezzotti, Massimo, Roberts, Jason, Tozer, Carly, Schroeder, Dustin, Blankenship, Donald
• Other Authors: Jackson School of Geosciences (JSG), University of Texas at Austin Austin, Institut des Géosciences de l’Environnement (IGE), Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA)
• Format: Article in Journal/Newspaper
• Language: English
• Published: HAL CCSD 2021
• Subjects: [SDU]Sciences of the Universe [physics]; Antarctic; Antarc*; EPICA; ice core
• Online Access: https://hal-insu.archives-ouvertes.fr/insu-03463321; https://hal-insu.archives-ouvertes.fr/insu-03463321/document; https://hal-insu.archives-ouvertes.fr/insu-03463321/file/essd-13-4759-2021.pdf; https://doi.org/10.5194/essd-13-4759-2021

International audience Abstract. We present an ice-penetrating radar data set which consists of 26 internal reflecting horizons (IRHs) that cover the entire Dome C area of the East Antarctic plateau, the most extensive to date in the region. This data set uses radar surveys collected over the space of 10 years, starting with an airborne international collaboration in 2008 to explore the region, up to the detailed ground-based surveys in support of the Beyond EPICA – Oldest Ice (BE-OI) European Consortium. Through direct correlation with the EPICA-DC ice core, we date 19 IRHs that span the past four glacial cycles, from 10 ka, beginning of the Holocene, to over 350 ka, ranging from 10 % to 83 % of the ice thickness at the EPICA-DC ice core site. We indirectly date and provide stratigraphic information for seven older IRHs using a 1D ice flow inverse model, going back to an estimated 700 ka. Depth and age uncertainties are quantified for all IRHs and provided as part of the data set. The IRH data set presented in this study is available at the US Antarctic Program Data Center (USAP-DC) (https://doi.org/10.15784/601411, Cavitte et al., 2020) and represents a contribution to the SCAR AntArchitecture action group (AntArchitecture, 2017).