Internal reflecting horizon 18 at Little Dome C, Antarctica

• Main Authors: 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
• Format: Dataset
• Language: English
• Published: PANGAEA 2023
• Subjects: 20201001; 20201002; 20201003; 20201004; 20201005; 20201006; 20201007; 20201008; 20201009; 20201010; 20201011; 20201012; Antarctica; ANT-Land_2019_BE-OI; AWI Antarctic Land Expedition; BE-OI; Beyond EPICA - Oldest Ice; Calculated; Depth of internal reflection horizon; below ice surface; Distance; Dome C; Event label; Internal Reflection Horizon; LATITUDE; LDC-VHF; LDC-VHF_20201001; LDC-VHF_20201002; LDC-VHF_20201003; LDC-VHF_20201004; LDC-VHF_20201005; LDC-VHF_20201006; LDC-VHF_20201007; LDC-VHF_20201008; LDC-VHF_20201009; LDC-VHF_20201010; LDC-VHF_20201011; LDC-VHF_20201012; Line; Little Dome C - Very High Frequency multichannel coherent radar depth sounder; LONGITUDE; radio echo sounding; Two-way traveltime; Antarc*; Antarctic; EPICA; The Cryosphere
• Online Access: https://doi.pangaea.de/10.1594/PANGAEA.957494; https://doi.org/10.1594/PANGAEA.957494

This dataset of radio-echo sounding internal reflecting horizons (IRH) which were traced across the radar surveys conducted in the 2019/20 Antarctic summer season at Little Come C, in the Dome C region of the East Antarctic Plateau. The data set is associated to publication: Chung, A., et al. (2023). The data were collected during a radar survey conducted in the Antarctic field seasons of 2019-20 using the Little Dome C - Very High Frequency (LDC-VHF) multichannel coherent radar depth sounder developed through a collaboration of The University of Alabama (UA), the University of Copenhagen (CPH) and the Alfred Wegener Institute (AWI). The survey covered Patches A and B of Little Dome C (Lilien et al., 2021), in order to select the exact drill site for the Beyond EPICA Oldest Ice drilling project. The datasets consists of 12 transects systematically covering Patches A and B with parallel lines, over an area of approximately 5×8 km^2. The dataset contains 19 IRHs, the basal unit horizon and the ice-bed interface which were manually traced by Ailsa Chung, using the seismic environment of the Echos software from Paradigm Geophysical. A single file for each IRH is provided in a text file, tab separated format with both depth and two-way travel time. The conversion to depth done using c = 0.1685 m/μs and firn correction of 10 m. The IRHs are provided at approximately 3.5 m spacial resolution.