Abstract

The precise bedrock topography near the EPICA ice core site, at Dome C in Antarctica exhibits impressive bedrock mountains, bowls and a clear network of elongated valleys. Some of these features are probably tectonic and are likely to be buried pre‐ice‐sheet landforms. The elongated bedrock valleys are clearly detectable in the surface topography suggesting a large‐scale network. The analysis of the relationship between basal and surface elongated structures indicates a damping factor decreasing from 120 near the dome to 80 at few tens of kilometer. There is evidence of presence of subglacial water and of erosed bed, that can play a role of the ice flow. A complete flow modeling, taking into account longitudinal stresses, should be performed around EPICA site in order to improve dating of the ice.

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