| dc.description.abstract | This master thesis study the mass balance pattern of two ice patches, Kringsollfonna and Storbrean, in the municipality of Oppdal, Norway for the balance year of 2013/2014. These ice patches are of climatic and archeological significance, due to their existence below the regional ELA, their capability of preserving archeological artefacts and because of their existence for over 3500 years. Mass balance data was obtained in September and March/April by terrestrial LiDAR scanner. High resolution point cloud data was analyzed in ArcMap, producing and comparing DEMs with resolution of 0.5x0.5 meter. The mean accumulation values for Storbrean and Kringsollfonna is similar (4.10 and 4.17 meters respectively) and seems to be heavily dependent on snowdrift and preferential deposition in concave areas within the extent of the patches. The ablation patterns are very different with mean values of
-5.68 meters on Storbrean and -7.39 meters on Kringsollfonna. This difference may be explained by factors such as: (1) incoming solar radiation, (2) altitude, (3) wind patterns, (4) a late snowfall (June 2014), (5) albedo and (6) summer precipitation. The individual effect of these are however difficult to quantify, based on only one year of measurements. The mass balance 2013/2014 of both patches was negative. | nb_NO |
