Tributaries of West Antarctic Ice Streams Revealed by RADARSAT Interferometry.
Interferometric RADARSAT data are used to map ice motion in the source areas of four West Antarctic ice streams. The data reveal that tributaries, coincident with subglacial valleys, provide a spatially extensive transition between slow inland flow and rapid ice stream flow and that adjacent ice streams draw from shared source regions. Two tributaries flow into the stagnant ice stream C, creating an extensive region that is thickening at an average rate of 0.49 meters per year. This is one of the largest rates of thickening ever reported in Antarctica.
Joughin
I
Jet Propulsion Laboratory, California Institute of Technology, M/S 300-235, 4800 Oak Grove Drive, Pasadena, CA 91109, USA. Canada Centre for Remote Sensing, Applications Division, 588 Booth Street, Ottawa, Ontario K1A 0Y7, Canada. Code 971, Oceans and Ice Branch, NASA/Goddard Space Flight Center, Greenbelt, MD 20771, USA. SAIC General Sciences Corporation, 4600 Powder Mill Road, Beltsville, MD 20705-2675, USA. Institute for Geophysics, University of Texas at Austin, 4412 Spicewood Springs Road 600, Austin, TX 78759, USA.
Gray
L
Bindschadler
R
Price
S
Morse
D
Hulbe
C
Mattar
K
Werner
C