Articles | Volume 10, issue 2
https://doi.org/10.5194/tc-10-811-2016
https://doi.org/10.5194/tc-10-811-2016
Research article
 | 
15 Apr 2016
Research article |  | 15 Apr 2016

Constraining variable density of ice shelves using wide-angle radar measurements

Reinhard Drews, Joel Brown, Kenichi Matsuoka, Emmanuel Witrant, Morgane Philippe, Bryn Hubbard, and Frank Pattyn

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Cited articles

Arthern, R. J., Vaughan, D. G., Rankin, A. M., Mulvaney, R., and Thomas, E. R.: In situ measurements of Antarctic snow compaction compared with predictions of models, J. Geophys. Res., 115, F03011, https://doi.org/10.1029/2009jf001306, 2010.
Arthern, R. J., Corr, H. F. J., Gillet-Chaulet, F., Hawley, R. L., and Morris, E. M.: Inversion for the density-depth profile of polar firn using a stepped-frequency radar, J. Geophys. Res.-Earth, 118, 1257–1263, https://doi.org/10.1002/jgrf.20089, 2013.
Barrett, E. B., Murray, T., and Clark, R.: Errors in Radar CMP Velocity Estimates Due to Survey Geometry, and Their Implication for Ice Water Content Estimation, J. Environ. Eng. Geoph., 12, 101–111, https://doi.org/10.2113/JEEG12.1.101, 2007.
Bender, M., Sowers, T., and Brook, E.: Gases in ice cores, P. Natl. Acad. Sci. USA, 94, 8343–8349, https://doi.org/10.1073/pnas.94.16.8343, 1997.
Blindow, N., Suckro, S. K., Rückamp, M., Braun, M., Schindler, M., Breuer, B., Saurer, H., Simões, J. C., and Lange, M. A.: Geometry and thermal regime of the King George Island ice cap, Antarctica, from GPR and GPS, Ann. Glaciol., 51, 103–109, https://doi.org/10.3189/172756410791392691, 2010.
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Short summary
The thickness of ice shelves is typically inferred using hydrostatic equilibrium which requires knowledge of the firn density. Here, we infer density from wide-angle radar using a novel algorithm including traveltime inversion and ray tracing. We find that firn is denser inside a 2 km wide ice-shelf channel which is confirmed by optical televiewing of two boreholes. Such horizontal density variations must be accounted for when using the hydrostatic ice thickness for determining basal melt rate.