publication . Article . 2016

Elevation change, mass balance, dynamics and surging of Langjökull, Iceland from 1997 to 2007

ALLEN POPE; IAN C. WILLIS; FINNUR PÁLSSON; NEIL S. ARNOLD; W. GARETH REES; HELGI BJÖRNSSON; LAUREN GREY;
English
  • Published: 18 Apr 2016
  • Publisher: Cambridge University Press
  • Country: United Kingdom
Abstract
Glaciers and ice caps around the world are changing quickly, with surge-type behaviour superimposed upon climatic forcing. Here, we study Iceland’s second largest ice cap, Langjökull, which has both surge- and non-surge-type outlets. By differencing elevation change with surface mass balance, we estimate the contribution of ice dynamics to elevation change. We use DEMs, in situ stake measurements, regional reanalyses, and a mass balance model to calculate the vertical ice velocity. Thus, we not only compare the geodetic, modelled, and glaciological mass balances, but also map spatial variations in glacier dynamics. Maps of emergence and submergence velocity succ...
Subjects
free text keywords: Earth-Surface Processes, Lidar data, Glacier mass balance, Oceanography, Geology, Elevation, Geomorphology, National power, Ice caps, Scandinavian studies
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