Science Service System

Summary of Proposal LAN1650

TitleIce flow speed and mass changes at three Greenland outlet glaciers using TerraSAR-X data
Investigator Liu, Lin - The Chinese University of Hong Kong, Earth System Science Programme
Team Member
Professor Furuya, Masato - Hokkaido University, Department of Natural History Sciences
Dr. Khan, Shfaqat Abbas - Technical University of Denmark, DTU Space - National Space Institute
SummaryWe propose to quantify seasonal variations of surface ice flow speed at three Greenland outlet glaciers at high spatial and temporal resolutions using TerraSAR-X data. These glacial speed products will be combined with the GPS-measured three-dimensional displacements on the bedrock near the glacier to separate the contributions from glacial dynamics and surface mass balance to the total change of glacial mass at time intervals as short as 11 days. In the past few years, many Greenland outlet glaciers, including Upernavik, Petermann, and 79 N glaciers, underwent rapid and large changes in their dynamic behavior. These are important indicators of the dynamic response of the Greenland Ice Sheet to warming temperatures and may have a significant impact on the mass imbalance of the entire Greenland Ice Sheet. Our proposed study will shed light on the physical driving mechanisms of seasonal glacier speed, which will improve our understanding on the natural variations of glacier behaviors and will help to improve the accuracy of predictions on the contribution of the Greenland Ice Sheet to the global sea level change. This work is funded by the George Thompson Fellowship, Department of Geophysics, Stanford University.

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