Abb. 3 Change of altitude in the EGIG-West-East-profile, supplement to: Seckel, Hansjörg; Stober, Manfred (1968): Höhenänderung des grönländischen Inlandeises 1959 - 1968. Polarforschung, 38(1/2), 215-221Hansjörg Seckel & Manfred Stober
The members of the two International Glaciological Greenland Expeditions (EGIG) in 1959 and 1968 determined the altitudes in the West-East-profile by levelling. The comparison of these two measurements gives evidence of the change of altitudes and of the surface-waves. The ways of measurement and of analysis are described here. The graphic representation of the result is discussed here in connexion with the possible causes.