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@article{Cavitte:2016:10.1017/jog.2016.11,
author = {Cavitte, M and Blankenship, D and Young, D and Schroeder, D and Parrenin, F and LeMeur, E and MacGregor, J and Siegert, MJ},
doi = {10.1017/jog.2016.11},
journal = {Journal of Glaciology},
pages = {323--334},
title = {Deep radiostratigraphy of the East Antarctic plateau: connectingthe Dome C and Vostok ice core sites},
url = {http://dx.doi.org/10.1017/jog.2016.11},
volume = {62},
year = {2016}
}
TY - JOUR
AB - Several airborne radar-sounding surveys are used to trace internal reflections around theEuropean Project for Ice Coring in Antarctica Dome C and Vostok ice core sites. Thirteen reflections,spanning the last two glacial cycles, are traced within 200 km of Dome C, a promising region formillion-year-old ice, using the University of Texas Institute for Geophysics High-Capacity RadarSounder. This provides a dated stratigraphy to 2318 m depth at Dome C. Reflection age uncertaintiesare calculated from the radar range precision and signal-to-noise ratio of the internal reflections. Theradar stratigraphy matches well with the Multichannel Coherent Radar Depth Sounder (MCoRDS)radar stratigraphy obtained independently. We show that radar sounding enables the extension of icecore ages through the ice sheet with an additional radar-related age uncertainty of ∼1/3–1/2 that ofthe ice cores. Reflections are extended along the Byrd-Totten Glacier divide, using University ofTexas/Technical University of Denmark and MCoRDS surveys. However, core-to-core connection isimpeded by pervasive aeolian terranes, and Lake Vostok’s influence on reflection geometry. Poorradar connection of the two ice cores is attributed to these effects and suboptimal survey design inaffected areas. We demonstrate that, while ice sheet internal radar reflections are generally isochronaland can be mapped over large distances, careful survey planning is necessary to extend ice core chronologiesto distant regions of the East Antarctic ice sheet.
AU - Cavitte,M
AU - Blankenship,D
AU - Young,D
AU - Schroeder,D
AU - Parrenin,F
AU - LeMeur,E
AU - MacGregor,J
AU - Siegert,MJ
DO - 10.1017/jog.2016.11
EP - 334
PY - 2016///
SN - 1727-5652
SP - 323
TI - Deep radiostratigraphy of the East Antarctic plateau: connectingthe Dome C and Vostok ice core sites
T2 - Journal of Glaciology
UR - http://dx.doi.org/10.1017/jog.2016.11
UR - http://hdl.handle.net/10044/1/31354
VL - 62
ER -
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