Lakes and subglacial hydrological networks around Dome C, East Anatrctica

• Main Authors: F. Rémy, L. Testut, B. Legresy, C. Bianchi, FORIERI, ALESSANDRO, I. Tabacco
• Other Authors: A. Forieri
• Format: Article in Journal/Newspaper
• Language: English
• Published: International Glaciological Society 2003
• Subjects: Settore GEO/11 - Geofisica Applicata; Dyna; Antarc*; Antarctica
• Online Access: http://hdl.handle.net/2434/11707

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 (c y) 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 dyna ics and on subglacial-lake studies.