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Supplements of Geografia Fisica e Dinamica Quaternaria
Volume VII - 2005

 

Proceedings of the Conferences “Mountains and Plains”

GIADA M. & ZANON G.

Modificazioni del livello e volumetriche per il ghiacciaio della Mare (Alpi centrali, gruppo Ortles-Cevedale), 1990-2000 – Elevation and volume changes in the La Mare Glacier (Central Alps, Ortles Cevedale Group), 1990-2000

Pages 179-181

Abstract

An aerial survey carried out in October 2000 on the La Mare Glacier allowed comp arison with a pr evious survey of 1990 and determinati on of the elevation and volume variations during this ten-year period. The final product is a computerized 1:5000 thematic map with isolines repr esent ing elevation variations. These variations are negative at almost all altitudes between 2540 and 3650 m a.s.l. with a mean value of -6.33 m, corresponding to a volum e of -26.2789 x 10 6ml • Th e equilibrium line altitude (ELA) in 2000 was calculated at 3600 m a.s.!., causing a situation of severe disequilibrium for the entire glacial system. The result s for the La Mare Glaci er are compared with parallel data for the neighb ouring Care ser Glacier, pointing out the essential importance of the topo graphic and morphometric peculiarities in the accelerat – ed glacier shr inkage ph ase that affected the southern slope of Central Alps during the 1990s.

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