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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 (2023): Internal reflecting horizons at Little Dome C, Antarctica [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.957176

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Abstract:
This is a 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 Dome C, in the Dome C region of the East Antarctic Plateau. The dataset is associated with publication: Chung, A et al. (2023). The data were collected during a radar survey conducted in the Antarctic field season 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 (Fig. 1). The dataset 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, 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. The 19 upper IRHs were linked from LDC to the EDC ice core site using the direct radar transect (profile number 20201012). Ages for IRHs were then calculated by linearly interpolating the EDC age-depth timescale from AICC2012 (Bazin et al., 2013) where the IRHs pass closest to the ice core site. IRH ages (in ka BP - before 1950) and uncertainties are provided in a text file in tab separated format.
Keyword(s):
Antarctica; Dome C; Internal Reflection Horizon; radio echo sounding
Supplement 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
References:
Bazin, Lucie; Landais, Amaëlle; Lemieux-Dudon, Bénédicte; Toyé Mahamadou Kele, H; Veres, Daniel; Parrenin, Frédéric; Martinerie, Patricia; Ritz, Catherine; Capron, Emilie; Lipenkov, Vladimir Ya; Loutre, Marie-France; Raynaud, Dominique; Vinther, Bo Møllesøe; Svensson, Anders M; Rasmussen, Sune Olander; Severi, Mirko; Blunier, Thomas; Leuenberger, Markus Christian; Fischer, Hubertus; Masson-Delmotte, Valerie; Chappellaz, Jérôme A; Wolff, Eric William (2013): An optimized multi-proxy, multi-site Antarctic ice and gas orbital chronology (AICC2012): 120-800 ka. Climate of the Past, 9(4), 1715-1731, https://doi.org/10.5194/cp-9-1715-2013
Lilien, David A; Steinhage, Daniel; Taylor, Drew; Parrenin, Frédéric; Ritz, Catherine; Mulvaney, Robert; Martín, Carlos; Yan, Jie-Bang; O'Neill, Charles; Frezzotti, Massimo; Miller, Heinrich; Gogineni, Prasad; Dahl-Jensen, Dorthe; Eisen, Olaf (2021): Brief communication: New radar constraints support presence of ice older than 1.5 Myr at Little Dome C. The Cryosphere, 15(4), 1881-1888, https://doi.org/10.5194/tc-15-1881-2021
Further details:
(Figure 1 in png format) The Little Dome C mountainous bedrock relief showing Patches A and B - areas surveyed as potential drill sites for the Beyond EPICA Oldest Ice project. The final selected drill sites for the Beyond EPICA (BELDC) and Australian Million Year Ice Core (MYIC) projects are marked by stars
Project(s):
Beyond EPICA - Oldest Ice (BE-OI)
Funding:
Horizon 2020 (H2020), grant/award no. 730258: Beyond EPICA - Oldest Ice
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:
Median Latitude: -75.233232 * Median Longitude: 122.849977 * South-bound Latitude: -75.348373 * West-bound Longitude: 122.384163 * North-bound Latitude: -75.101334 * East-bound Longitude: 123.358803
Date/Time Start: 2019-11-30T08:28:21 * Date/Time End: 2019-12-04T07:53:33
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC) * Processing Level: PANGAEA data processing level 3 (ProcLevel3)
Size:
22 datasets

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Datasets listed in this publication series

  1. Chung, A; Parrenin, F; Steinhage, D et al. (2023): Ages of internal reflecting horizons at Little Dome C, Antarctica. https://doi.org/10.1594/PANGAEA.957623
  2. Chung, A; Parrenin, F; Steinhage, D et al. (2023): Basal unit at Little Dome C, Antarctica. https://doi.org/10.1594/PANGAEA.957173
  3. Chung, A; Parrenin, F; Steinhage, D et al. (2023): Bedrock at Little Dome C, Antarctica. https://doi.org/10.1594/PANGAEA.957461
  4. Chung, A; Parrenin, F; Steinhage, D et al. (2023): Internal reflecting horizon 1 at Little Dome C, Antarctica. https://doi.org/10.1594/PANGAEA.957482
  5. Chung, A; Parrenin, F; Steinhage, D et al. (2023): Internal reflecting horizon 2 at Little Dome C, Antarctica. https://doi.org/10.1594/PANGAEA.957483
  6. Chung, A; Parrenin, F; Steinhage, D et al. (2023): Internal reflecting horizon 3 at Little Dome C, Antarctica. https://doi.org/10.1594/PANGAEA.957485
  7. Chung, A; Parrenin, F; Steinhage, D et al. (2023): Internal reflecting horizon 4 at Little Dome C, Antarctica. https://doi.org/10.1594/PANGAEA.957484
  8. Chung, A; Parrenin, F; Steinhage, D et al. (2023): Internal reflecting horizon 5 at Little Dome C, Antarctica. https://doi.org/10.1594/PANGAEA.957481
  9. Chung, A; Parrenin, F; Steinhage, D et al. (2023): Internal reflecting horizon 6 at Little Dome C, Antarctica. https://doi.org/10.1594/PANGAEA.957486
  10. Chung, A; Parrenin, F; Steinhage, D et al. (2023): Internal reflecting horizon 7 at Little Dome C, Antarctica. https://doi.org/10.1594/PANGAEA.957487
  11. Chung, A; Parrenin, F; Steinhage, D et al. (2023): Internal reflecting horizon 8 at Little Dome C, Antarctica. https://doi.org/10.1594/PANGAEA.957488
  12. Chung, A; Parrenin, F; Steinhage, D et al. (2023): Internal reflecting horizon 9 at Little Dome C, Antarctica. https://doi.org/10.1594/PANGAEA.957489
  13. Chung, A; Parrenin, F; Steinhage, D et al. (2023): Internal reflecting horizon 10 at Little Dome C, Antarctica. https://doi.org/10.1594/PANGAEA.957480
  14. Chung, A; Parrenin, F; Steinhage, D et al. (2023): Internal reflecting horizon 11 at Little Dome C, Antarctica. https://doi.org/10.1594/PANGAEA.957496
  15. Chung, A; Parrenin, F; Steinhage, D et al. (2023): Internal reflecting horizon 12 at Little Dome C, Antarctica. https://doi.org/10.1594/PANGAEA.957495
  16. Chung, A; Parrenin, F; Steinhage, D et al. (2023): Internal reflecting horizon 13 at Little Dome C, Antarctica. https://doi.org/10.1594/PANGAEA.957497
  17. Chung, A; Parrenin, F; Steinhage, D et al. (2023): Internal reflecting horizon 14 at Little Dome C, Antarctica. https://doi.org/10.1594/PANGAEA.957498
  18. Chung, A; Parrenin, F; Steinhage, D et al. (2023): Internal reflecting horizon 15 at Little Dome C, Antarctica. https://doi.org/10.1594/PANGAEA.957499
  19. Chung, A; Parrenin, F; Steinhage, D et al. (2023): Internal reflecting horizon 16 at Little Dome C, Antarctica. https://doi.org/10.1594/PANGAEA.957492
  20. Chung, A; Parrenin, F; Steinhage, D et al. (2023): Internal reflecting horizon 17 at Little Dome C, Antarctica. https://doi.org/10.1594/PANGAEA.957491
  21. Chung, A; Parrenin, F; Steinhage, D et al. (2023): Internal reflecting horizon 18 at Little Dome C, Antarctica. https://doi.org/10.1594/PANGAEA.957494
  22. Chung, A; Parrenin, F; Steinhage, D et al. (2023): Internal reflecting horizon 19 at Little Dome C, Antarctica. https://doi.org/10.1594/PANGAEA.957493