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http://hdl.handle.net/2122/4180| 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 | Journal: | Annals of Glaciology | Series/Report no.: | / 37 (2003) | Publisher: | International Glaciological Society | Issue Date: | 2003 | Keywords: | Ice sheet Subglagial lakes |
Subject Classification: | 02. 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. |
| Appears in Collections: | Article published / in press |
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| REMY-2003-Vol37.pdf | main article | 1.14 MB | Adobe PDF |
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