Pine Island Glacier Ice Flows and Elevation Change
This animation shows glacier changes detected by ATM, ICESat and ice bridge data in the highly dynamic Pine Island Glacier. We know that ice speeds in this area have increased dramatically from the late 1990s to the present as the ice shelves in this area have thinned and the bottom of the ice has lost contact with the bed beneath. As the ice has accelerated, ice upstream of the coast must be stretched more vigorously, causing it to thin. NASA-sponsored aircraft missions first measured the ice surface height in this region in 2002, followed by ICESat data between 2002 and 2009. Ice Bridge aircraft have measured further surface heights in 2009 and 2010, and these measurements continue today. Integrating these altimetry sources allows us to estimate surface height changes throughout the drainage regions of the most important glaciers in the region. We see large and accelerating elevation changes extending inland from the coast on Pine Island glacier shown centered here. The changes on Pine Island mark these as potential continuing sources of ice to the sea, and has been surveyed in 2011 by Ice Bridge aircraft and targeted for repeat measurements in coming years.
Please give credit for this item to:
NASA/Goddard Space Flight Center Scientific Visualization Studio
Datasets used in this visualization
Landsat-7 LIMA (Landsat Image Mosaic of Antarctica)ID: 599Mosaic Collected with ETM+ NASA/GSFC, British Antarctic Survey, USGS EROS Data Center
ICESat GLA14 (L2 Global Land Surface Altimetry Data)ID: 716Collected with GLAS NASA
IceBridge L2 Icessn Elevation, Slope, and RoughnessID: 717Collected with ATM NASA
Pre-IceBridge L2 Icessn Elevation, Slope, and RoughnessID: 718Collected with ATM NASA
Pre-IceBridge BLVIS2 (L2 Geolocated Ground Elevation and Return Energy Quartiles)ID: 719Collected with LVIS NASA
ERS-1 and ERS-2 Differential InterferometryID: 720Collected with SAR European Space Agency
Advanced Land Observation System (ALOS) L-band frequency (1.27 GHz) radarID: 721Collected with Phased-Array Synthetic-Aperture Radar (PALSAR) Japan Aerospace Exploration Agency
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