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Summary of Proposal HYD3008

TitleDocumentation and monitoring of changes in ice dynamics, elevation and mass discharge of glacier systems on the Antarctic Peninsula using dense time series of SAR data
Investigator Friedl, Peter - German Aerospace Center (DLR), International Ground Segment
Team Member
Dr. Höppner, Kathrin - German Aerospace Center (DLR), International Ground Segment
Mr. Lorenz, Rainer - German Aerospace Center (DLR), International Ground Segment
SummaryThe main objective of the project is the derivation of glaciological parameters for long and dense time series of measurements, acquired by different space borne SAR sensors on different sites of the Antarctic Peninsula. An emphasis of our work will be the reprocessing of ERS data, which has been received at DLR`s Antarctic station GARS O´Higgins and is currently archived at the German Remote Sensing Data Center (DFD) in Oberpfaffenhofen. Glacier extends, grounding line positions, glacier velocities, surface elevations, ice mass fluxes and glacier mass balances will be calculated using interferometric synthetic radar (InSAR) and differential interferometric synthetic radar (DInSAR) methods as well as intensity tracking. Our focus of interest lies on the long-term investigation of the adjustment processes of glacial systems on the Antarctic Peninsula to Climate Change (e.g. after an ice shelf disintegration and the loss of the buttressing effect). In addition to ERS data, data of other space borne SAR missions (e.g. TerraSAR-X) will be analyzed in order to achieve a dense time series of SAR measurements from the 1990s until today for several regions on the Antarctic Peninsula. The high value of the TerraSAR-X data for our project results on the one hand from the fact that many regions of the Antarctic Peninsula were classified as "super test sites" with high temporal and spatial data coverage. On the other hand, TerraSAR-X data particularly meet the requirements for glacier velocity mapping with the intensity tracking method because of its high resolution, its 11-days repeat cycle and its highly precise orbit data.

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