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Summary of Proposal HYD1421

TitlePrecise ice dynamics and mass-balance near the grounding zone of outlet glaciers in the Transantarctic Mountains
Investigator Floricioiu, Dana - DLR, IMF
Team Member
Mr. Abdel Jaber, Wael - DLR, IMF
Mr. Marsh, Oliver - University of Canterbury, Gateway Antarctica, Centre for Antarctic Studies and Research
Dr. Baessler, Michael - DLR, IMF
Dr Rack, Wolfgang - University of Canterbury, Gateway Antarctica, Centre for Antarctic Studies and Research
SummaryKnowledge on ice dynamics of outlet glaciers in the Transantarctic Mountains is vital to quantify changes of the West and East Antarctic Ice Sheet and to determine ice-sheet sensitivity to climate change. In this project we propose to investigate several outlet glaciers, in particular their grounding zones, which are believed to hold key information for the interpretation of past and future ice sheet flow. The sudden change of subglacial properties at the grounding line, where ice starts to float on sea, requires observations at both high temporal and spatial resolution in order to capture the related velocity fluctuations. We envisage separating short term changes in ice dynamics on a regular time scale caused by ocean tides from irregular changes caused by subglacial properties further upstream. The satellite analysis, based on speckle/feature tracking and interferometric analysis of TerraSAR-X repeat pass data will be complemented by new field data and auxiliary data sets from other satellite missions. This will allow further insight in the relationship between ice-ocean interaction and ice dynamics near the grounding zone, and thus contribute to research on ice sheet stability and sea level change.

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DLR 2004-2016