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): Ages of internal reflecting horizons at Little Dome C, Antarctica [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.957623, In: Chung, A et al. (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 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 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, tab separated format file.
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
Project(s):
Beyond EPICA - Oldest Ice (BE-OI)
Funding:
Coverage:
Median Latitude: -75.202900 * Median Longitude: 122.922139 * South-bound Latitude: -75.304466 * West-bound Longitude: 122.489365 * North-bound Latitude: -75.101334 * East-bound Longitude: 123.354912
Date/Time Start: 2019-12-04T03:06:26 * Date/Time End: 2019-12-04T07:53:33
Event(s):
LDC-VHF_20201012 (20201012) * Latitude Start: -75.304466 * Longitude Start: 122.489365 * Latitude End: -75.101334 * Longitude End: 123.354912 * Date/Time Start: 2019-12-04T03:06:26 * Date/Time End: 2019-12-04T07:53:33 * Location: Dome C, Antarctica * Campaign: ANT-Land_2019_BE-OI * Basis: AWI Antarctic Land Expedition * Method/Device: Little Dome C - Very High Frequency multichannel coherent radar depth sounder (LDC-VHF)
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Horizon | Horizon | Chung, Ailsa | IRH name | ||
| 2 | Age, dated | Age dated | ka BP | Chung, Ailsa | Antarctic ice core chronology (AICC2012) | ka B1950 |
| 3 | Age, dated standard deviation | Age dated std dev | ± | Chung, Ailsa | Antarctic ice core chronology (AICC2012) |
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:
57 data points