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Snow megadune fields on the East Antarctic Plateau: Extreme atmosphere‐ice interaction
Earth System Science Interdisciplinary Center, University of Maryland, College Park, Maryland
National Snow and Ice Data Center,CIRES, University of Colorado, Boulder, Colorado
Earth System Science Interdisciplinary Center, University of Maryland, College Park, Maryland
Applied Physics Laboratory, University of Washington, Seattle, Washington
Applied Physics Laboratory, University of Washington, Seattle, Washington
Jet Propulsion Laboratory, California Institue of Technology, Pasadena, California
Large dune fields occupy more than 500,000 km² of the East Antarctic Plateau. The “megadunes”, or long‐wavelength surface ripples, have amplitudes of only a few meters, wavelengths of a few kilometers, and parallel crests which can extend one hundred kilometers. They occur in areas characterized by low accumulation, extensively recrystallized snow, and strong scattering of the microwave part of the spectrum. Dune crests are oriented perpendicular to the regional katabatic wind direction. Snow megadunes are unlikely to be formed by simple wind transport of snow particles.
Received 12 November 1999; accepted 13 July 2000; .
Citation: (2000), Snow megadune fields on the East Antarctic Plateau: Extreme atmosphere‐ice interaction, Geophys. Res. Lett., 27(22), 3719–3722.
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