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

• Main Authors: 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
• Format: Dataset
• Language: English
• Published: PANGAEA 2024
• Subjects: Accumulation rate in ice equivalent per year; Age; 1D numerical model; Age density; BE-OI; Beyond EPICA - Oldest Ice; DEPTH; ice/snow; Ice age; uncertainty; Million Year Ice Core drill site; MULT; Multiple investigations; MYIC_site; Thinning function; Velocity; vertical; Antarctic; Antarc*; Antarctica; British Antarctic Survey; EPICA; ice core; The Cryosphere
• Online Access: https://doi.pangaea.de/10.1594/PANGAEA.966746; https://doi.org/10.1594/PANGAEA.966746

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.