Lakes and subglacial hydrological networks around Dome C, East Antarctica

AbstractPrecise 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...

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Bibliographic Details
Published in:Annals of Glaciology
Main Authors: Rémy, Frédérique, Testut, Laurent, Legrésy, Benoît, Forieri, Alessandro, Bianchi, Cesido, Tabacco, Ignazio E.
Format: Article in Journal/Newspaper
Language:English
Published: 2007
Subjects:
Earth-Surface Processes
East Antarctica
Antarc*
Antarctica
Online Access:https://www.openaccessrepository.it/record/180108
https://doi.org/10.3189/172756403781815799
Description
Summary:AbstractPrecise 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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