Ice thickness and basal conditions of Vestfonna ice cap, eastern Svalbard
The AA. combined ground-based pulsed radar data collected in 2008–2009 with airborne radio-echo sounding data acquired in 1983 and 1986 over Vestfonna ice cap, Svalbard. The airborne dataset mainly covers the fast-flowing outlet glaciers
and the marginal zone, while the ground-based data explicitly cover the interior part of the ice cap. The data presented here are thus the first complete estimate of bed topography and ice thickness. The need to include more volume observations in the derivations
to the development of numerical models of the ice cap and to the estimation of more accurate area-volume scaling parameters.
Spatial and temporal variability of net accumulation from shallow cores from Vestfonna ice cap (Nordaustlandet, Svalbard)
Arctic Region ; Climatic variability ; Cold area ; Geochemistry ; Glacier mass balance ; Ice ; Ice core ; Oxygen 18 ; Polar region ; Sea ice ; Spatial analysis ; Svalbard ; Wind
The AA. analyse ice cores from Vestfonna ice cap (Nordaustlandet, Svalbard). Density profiles and oxygen isotopic measurements were made on 3 firn cores from the 2 highest summits of the glacier located on the SW–NE and NW–SE central ridges
Spatial distribution and change in the surface ice-velocity field of Vestfonna ice cap, Nordaustlandet, Svalbard, 1995-2010 using geodetic and satellite interferometry data
The AA. present here the velocity measurements derived from their campaigns 2007–2010 and compare the geodetic measurements against InSAR velocity fields from satellite platforms from 1995/96 and 2008. They find the spatial distribution of ice
speeds from the InSAR is in good agreement within the uncertainty limits with their geodetic measurements. The AA. observe no clear indication of seasonal ice speed differences, but they find a speed-up of the outlet glacier Franklinbreen between
The AA. utilize a 34-year record (1976 to 2010) of multi-spectral satellite data to extract glacier frontal positions of major outlet glaciers of the ice cap Vestfonna, in northeastern Svalbard. They interpret the results in the context of elevation
change measurements from satellite imagery and DEMs, as well as to repeat ice velocity measurements from SAR interferometry and feature tracking.