Rapid ice discharge from southeast Greenland glaciers
作者： E. Rignot , D. Braaten , S. P. Gogineni , W. B. Krabill , J. R. McConnell
DOI: 10.1029/2004GL019474
关键词:
摘要: Interferometric synthetic-aperture radar (InSAR) observations of southeast Greenland glaciers acquired by the Earth Remote Sensing Satellites (ERS-1/2) in 1996 were combined with ice sounding data collected late 1990s to estimate a total discharge 46 ± 3 km per year between 62°N and 66°N, which is significantly lower than mass input 29 calculated from recent compilation snow accumulation data. Further north, Helheim Glacier discharges 23 1 3/yr vs 30 accumulation; Kangerdlugssuaq 2 3/yr; Daugaard-Jensen 10.5 0.6 3/yr. The balance east therefore dominated negative (- 17 4 3/yr), equivalent sea level rise 0.04 0.01 mm/yr. Warmer drier conditions cannot explain imbalance we attribute longterm changes dynamics. Copyright 2004 American Geophysical Union.
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