Lakes and subglacial hydrological networks around Dome C, East Antarctica
Authors: Rémy, Frédérique; Testut, Laurent; Legrésy, Benoît; Forieri, Alessandro; Bianchi, Cesido; Tabacco, Ignazio E.
Source: Annals of Glaciology, Volume 37, Number 1, 1 June 2003 , pp. 252-256(5)
Publisher: International Glaciological Society
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.
Document Type: Research Article
Publication date: 1 June 2003
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