Volume and velocity changes at Mittivakkat Gletscher, southeast Greenland

Mernild, S. H., Knudsen, N. T., Hoffman, M. J. , Yde, J. C., Hanna, E., Lipscomb, W. H., Malmros, J. K. and Fausto, R. S. (2013) Volume and velocity changes at Mittivakkat Gletscher, southeast Greenland. Journal of Glaciology, 59 (216). pp. 660-670. ISSN 0022-1430

Full text not available from this repository.

Item Type:Article
Item Status:Live Archive


We document changes for Mittivakkat Gletscher, the peripheral glacier in Greenland with the longest field-based observed mass-balance and surface velocity time series. Between 1986 and 2011, this glacier changed by -15 in mean ice thickness and -30 in volume. We attribute these changes to summer warming and lower winter snow accumulation. Vertical strain compensated for �60 of the elevation change due to surface mass balance (SMB) in the lower part, and �25 in the upper part. The annual mean ice surface velocity changed by -30, which can be fully explained by the dynamic effect of ice thinning, within uncertainty. Mittivakkat Gletscher summer surface velocities were on average 50-60 above winter background values, and up to 160 higher during peak velocity events. Peak velocity events were accompanied by uplift of a few centimeters.

Keywords:glacier dynamics, ice thickness, mass balance, snow accumulation, summer, time series, warming, winter, Ammassalik Island, Arctic, Greenland, Mittivakkat Glacier
Subjects:F Physical Sciences > F330 Environmental Physics
Divisions:College of Science > School of Geography
Related URLs:
ID Code:26017
Deposited On:23 Feb 2017 20:12

Repository Staff Only: item control page