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New results on dynamic instability of Antarctic Peninsula glaciers detected by TerraSAR-X ice motion analysis

Rott, Helmut and Eineder, Michael and Nagler, Thomas and Floricioiu, Dana (2008) New results on dynamic instability of Antarctic Peninsula glaciers detected by TerraSAR-X ice motion analysis. In: European Conference on Synthetic Aperture Radar (EUSAR), pp. 1-4. VDE Conference Services. EUSAR 2008, 2007-06-02 - 2007-06-05, Friedrichshafen, Germany.

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Abstract

Larsen-A ice shelf in 1995 and Larsen-B in 2002. Retreat and acceleration was observed for the glaciers above the previous Larsen-A ice shelf between 1995 and 1999 by means of 24 hour repeat pass ERS-1/ERS-2 InSAR data. Because the signal over glaciers decorrelates rapidly, no InSAR analysis was possible later on with ASAR. New opportunities for ice dynamic studies were opened up by TerraSAR-X. We applied image correlation techniques with 11-day repeat pass data, acquired in strip-map mode with 3m x 3m resolution to map ice motion. Up to eight-fold acceleration of the terminal parts of glaciers was observed since the ice shelf collapse, resulting in significant increase of export of grounded ice which contributes to sea level rise. These investigations demonstrate that TerraSAR-X offers unique opportunities for studies of flow dynamics of glaciers and ice streams. The high spatial resolution and short repeat observation capabilities enable detailed observations of complex flow fields and their temporal variations.

Document Type:Conference or Workshop Item (Speech, Paper)
Title:New results on dynamic instability of Antarctic Peninsula glaciers detected by TerraSAR-X ice motion analysis
Authors:
AuthorsInstitution or Email of Authors
Rott, HelmutENVEO IT GmbH, Innsbruck, Austria
Eineder, MichaelUNSPECIFIED
Nagler, ThomasENVEO IT GmbH, Innsbruck, Austria
Floricioiu, DanaUNSPECIFIED
Date:2 June 2008
Journal or Publication Title:European Conference on Synthetic Aperture Radar (EUSAR)
Refereed publication:No
In ISI Web of Science:No
Page Range:pp. 1-4
Publisher:VDE Conference Services
Status:Published
Keywords:Larsen ice shelf, TerraSAR-X, interferometry, glacier tracking
Event Title:EUSAR 2008
Event Location:Friedrichshafen, Germany
Event Type:international Conference
Event Dates:2007-06-02 - 2007-06-05
Organizer:VDE
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W EO - Erdbeobachtung
DLR - Research area:Space
DLR - Program:W EO - Erdbeobachtung
DLR - Research theme (Project):W - Vorhaben Bildwissenschaften (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Remote Sensing Technology Institute
Deposited By: Dr.rer.nat. Michael Eineder
Deposited On:04 Jul 2008
Last Modified:06 May 2013 15:43

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