Journal cover Journal topic
The Cryosphere An interactive open-access journal of the European Geosciences Union
doi:10.5194/tc-2016-169
© Author(s) 2016. This work is distributed
under the Creative Commons Attribution 3.0 License.
Research article
20 Jul 2016
Review status
A revision of this discussion paper is under review for the journal The Cryosphere (TC).
High resolution boundary conditions of an old ice target near Dome C, Antarctica
Duncan A. Young1, Jason L. Roberts2,3, Catherine Ritz4,5, Massimo Frezzotti6, Enrica Quartini1, Marie G. P. Cavitte1, Carly R. Tozer3, Daniel Steinhage7, Stefano Urbini8, Hugh F. J. Corr9, Tas Van Ommen2,3, and Donald D. Blankenship1 1University of Texas Institute for Geophysics, Austin, Texas
2Australian Antarctic Division, Kingston, Australia
3Antarctic Climate and Ecosystems CRC, Hobart, Australia
4CNRS, LGGE (UMR5183), F-38041 Grenoble, France
5Univ. Grenoble Alpes, LGGE (UMR5183), F-38041 Grenoble, France
6ENEA, Rome, Italy
7Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Bremerhaven, Germany
8Istituto Nazionale di Geofisica e Vulcanologia, Rome, Italy
9British Antarctic Survey, Cambridge, United Kingdom
Abstract. A high resolution (1 km line spacing) aerogeophysical survey was conducted over a region near the East Antarctic Ice Sheet's Dome C that may hold a 1.5 million year old climate record. New ice thickness data derived from an airborne coherent radar sounder was combined with unpublished data that was unavailable for earlier compilations. We find under the primary candidate region elevated rough topography, near a number of subglacial lakes, but also regions of smoother bed. The high resolution of this ice thickness dataset also allows us to explore the nature of ice thickness uncertainties in the context of radar geometry and processing.

Citation: Young, D. A., Roberts, J. L., Ritz, C., Frezzotti, M., Quartini, E., Cavitte, M. G. P., Tozer, C. R., Steinhage, D., Urbini, S., Corr, H. F. J., Van Ommen, T., and Blankenship, D. D.: High resolution boundary conditions of an old ice target near Dome C, Antarctica, The Cryosphere Discuss., doi:10.5194/tc-2016-169, in review, 2016.
Duncan A. Young et al.
Duncan A. Young et al.
Duncan A. Young et al.

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Short summary
Glacial ice can preserve records of Earth's ancient atmosphere (including greenhouse gases) that can be compared to ocean sediment records of ice sheet size to better understand climate feedbacks. To find records of the greenhouse gases found in key periods of climate transition, we need to find sites of unmelted old ice near the base of the ice sheet. We performed a high resolution survey of such a site near Europe's Concordia station in East Antarctica, using a multi instrument aircraft.
Glacial ice can preserve records of Earth's ancient atmosphere (including greenhouse gases) that...
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