Open Access

Elevation change measurements of the Greenland Ice Sheet

  • R. Forsberg1Email author,
  • K. Keller1,
  • C. S. Nielsen1,
  • N. Gundestrup2,
  • C. C. Tscherning2,
  • S. N. Madsen3 and
  • J. Dall3
Earth, Planets and Space201452:BF03352329

DOI: 10.1186/BF03352329

Received: 13 January 2000

Accepted: 14 July 2000

Published: 24 June 2014

Abstract

Repeated GPS measurements have been performed at the centre of the Greenland Ice Sheet since 1992. Results have shown that the ice sheet is essentially stable at this location, with GPS-determined strain and elevation change rates in good accordance with yearly snow accumulation and glaciological flow models. In a local ice cap in East Greenland (Geikie Plateau) repeated GPS, airborne laser altimetry and SAR interferometry have been used to study ice movements in the more climatically variable coastal zone, where meter-level annual elevation changes are possible due to the high precipitation. The paper outlines the surveys carried out, some preliminary results, and intercomparisons of GPS, laser altimetry and SAR techniques.