Caratteri delle modificazioni areali, di livello e volumetriche per il Ghiacciaio del Caresèr (Alpi Centrali, Gruppo Ortles-Cevedale) 1990-1997
Characteristics of area, elevation, and volume changes in the Caresèr Glacier (Central Alps, Ortles-Cevedale Group)
Keywords:
Glacial fluctuations, Glacial mass balance, Aerial surveys, Careser Glacier (Central Alps)Abstract
An aerial survey carried out in September 1997 on the Careser Glacier allowed comparison with the previous survey of 1990 and also evaluation of area, elevation, and volume changes during this period. In addition, a computerized 1:5000 thematic map with isolines representing elevation variations was prepared. Elevation variations for 1990-1997 were negative at all altitudes between 2860 and 3330 m a.s.l., with a mean value of -7.75 m, corresponding to a volume of -29.8975 x 106 m³. In the same interval, the overall surface area reduction was nearly 13%. The distribution of area and altitude changes are analyzed on the glacier surface and compared with their behavior in previous periods, beginning from 1967. Results confirm a good fit with contemporaneous glaciological measurements on mass balance and may be considered indicative of the dynamics of the present phase of accelerated glacier shrinkage in the Alps.
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Copyright (c) 2001 Marco Giada, Giorgio Zanon (Author)
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