Movement Observations on the Greenland Ice Sheet

• Published in: Journal of Glaciology
• Main Author: Wallerstein, George
• Format: Article in Journal/Newspaper
• Language: English
• Published: Cambridge University Press (CUP) 1958
• Subjects: Earth-Surface Processes; Greenland; Ice Sheet; Journal of Glaciology
• Online Access: http://dx.doi.org/10.1017/s0022143000024254; https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000024254

Abstract During the summer of 1955 certain positions on the Greenland Ice Sheet that had been established by the French in 1951 were redetermined by observations of the sun in order to measure the motion of the surface of the ice sheet. A motion of 774 meters in four years in a southerly direction was noted at the Central Station. A motion of 611 meters in a westerly direction was noted at the French Mile 100. The uncertainty of the measures is large when the time scale is as short as four years, and expeditions to this area are urged to remeasure these positions and extend the markers for future use.