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SUMMARY:Exploring radar data of ice sheets by means of numerical modelling
  - Dr Gwendolyn Leysinger-Vieli\, University of Durham
DTSTART:20120314T163000Z
DTEND:20120314T173000Z
UID:TALK34028@talks.cam.ac.uk
CONTACT:Steven Palmer
DESCRIPTION:Radio echo sounding data of ice sheets reveals the ice thickne
 ss\, the bed topography and the internal ice layers. Internal ice layers r
 epresent the paleo-ice surfaces\, which were buried by surface accumulatio
 n and advected with time by ice flow. These reflecting layers can therefor
 e be treated as layers of the same age (isochrones) and in combination wit
 h age layers calculated from numerical models can be used to learn more ab
 out ice dynamics and boundary conditions. Information extracted from radar
  layers are e.g. the temporal and spatial accumulation pattern over a larg
 e area\, where previously only point information from boreholes was availa
 ble. Furthermore the data allows to investigate the basal conditions of th
 e ice sheet and its flow dynamics\, and potentially to infer for its long-
 term history. In this talk I will show how numerical modelling can be used
  to explore radar layer architecture\, thereby improving our understanding
  of ice sheet dynamics.
LOCATION:Scott Polar Research Institute\, main lecture theatre
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