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Authors: Rémy, F.* 
Testut, L.* 
Legrésy, B.* 
Forieri, A.* 
Bianchi, C.* 
Tabacco, I. E.* 
Title: Lakes and subglacial hydrological networks around Dome C, East Antarctica
Issue Date: 2003
Series/Report no.: / 37 (2003)
Keywords: Ice sheet
Subglagial lakes
Subject Classification02. Cryosphere::02.02. Glaciers::02.02.03. Geomorphology 
02. Cryosphere::02.02. Glaciers::02.02.04. Ice 
02. Cryosphere::02.02. Glaciers::02.02.05. Ice dynamics 
Abstract: Precise topography from European Remote-sensing Satellite radar altimetry and high density of airborne radio-echo sounding in the area surrounding Dome C, Antarctica, show a link between surface features and subglacial lakes. In this paper, we extend the study to fine structures by computing a curvature-based coefficient (cy) related to surface undulations. These coefficient variations reveal many surface undulations, and some elongated features of this parameter seem to link known subglacial lakes. A population of high values of this coefficient, assumed to correspond to transitions between sliding and non-sliding flow regime, strengthen the appearance of a network which would link most of the lakes in the area. The existence of such a network impacts on ice-flow dynamics and on subglacial-lake studies.
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