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Hamilton & Whillans 2000
Hamilton, G.S. and Whillans, I.M. (2000). Point measurements of mass balance of the Greenland Ice Sheet using precision vertical Global Positioning System (GPS) surveys. Journal of Geophysical Research 105: doi: 10.1029/2000JB900102. issn: 0148-0227.

Rates of ice sheet thickening or thinning in Greenland are measured using the coffee-can technique. This entails computing the difference in the vertical velocity of markers anchored in firm and the long-term rate of snow accumulation. The velocities are obtained from repeat surveys using the Global Positioning System (GPS). With corrections for densification and along-slope flow, this difference is the local mass balance. For two sites in western Greenland (Camp Century, and a site just south of the EGIG line (Crawford Point)) results show ice sheet thinning. A third west Greenland site (inland from Upernavik) is close to balance. Two sites, Dye-2 in western Greenland and Summit, are thickening slowly.

BACKGROUND DATA FILES

Abstract

Keywords
Geodesy and Gravity, Hydrology, Glaciology, Hydrology, Snow and ice, Information Related to Geographic Region, Arctic region
Journal
Journal of Geophysical Research
http://www.agu.org/journals/jb/
Publisher
American Geophysical Union
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