Articles | Volume 10, issue 2
https://doi.org/10.5194/tc-10-751-2016
https://doi.org/10.5194/tc-10-751-2016
Research article
 | 
05 Apr 2016
Research article |  | 05 Apr 2016

The influence of a model subglacial lake on ice dynamics and internal layering

Eythor Gudlaugsson, Angelika Humbert, Thomas Kleiner, Jack Kohler, and Karin Andreassen

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Cited articles

Aschwanden, A., Bueler, E., Khroulev, C., and Blatter, H.: An enthalpy formulation for glaciers and ice sheets, J. Glaciol., 58, 441–457, 2012.
Bell, R., Studinger, M., Shuman, C., Fahnestock, M., and Joughin, I.: Large subglacial lakes in East Antarctica at the onset of fast-flowing ice streams, Nature, 445, 904–907, 2007.
Bentley, M., Christoffersen, P., Hodgson, D., Smith, A., Tulaczyk, S., and Le Brocq, A.: Subglacial lake sediments and sedimentary processes: potential archives of ice sheet evolution, past environmental cange, and the presence of life, in: Antarctic Subglacial Aquatic Environments, American Geophysical Union, Washington, D.C., 83–110, https://doi.org/10.1029/GM192, 2013.
Christoffersen, P., Tulaczyk, S., Wattrus, N., Peterson, J., Quintana-Krupinski, N., Clark, C., and Sjunneskog, C.: Large subglacial lake beneath the Laurentide Ice Sheet inferred from sedimentary sequences, Geology, 36, 563–566, 2008.
Dowdeswell, J. and Siegert, M.: The dimensions and topographic setting of Antarctic subglacial lakes and implications for large-scale water storage beneath continental ice sheets, Geol. Soc. Am. Bull., 111, 254–263, 1999.
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Short summary
This paper explores the influence of a subglacial lake on ice dynamics and internal layers by means of numerical modelling as well as simulating the effect of a subglacial drainage event on isochrones. We provide an explanation for characteristic dip and ridge features found at the edges of many subglacial lakes and conclude that draining lakes can result in travelling waves at depth within isochrones, thus indicating the possibility of detecting past drainage events with ice penetrating radar.