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Supplements of Geografia Fisica e Dinamica Quaternaria
Volume V - 2001

 

Proceedings of the 8th Italian Glaciological Meeting

MAZZA A.

Response time of ghiacciaio del Nordend (valle Anzasca, western Alps) to the climatic fluctuations – Il tempo di risposta del Ghiacciaio del Nordend (Valle Anzasca, Alpi Occidentali) alle fluttuazioni climatiche

Pages 113-120

Abstract

The geographic position of Gh iacciaio del Nordend and the history of its name are shortly reviewed . Th en the map and picture sourc es concerning this glacier are carefully examined. They enable the reconstruction, at least qualitative , of the evolut ion of Ghiacciaio del No rdend , synchronous with that of Ghiacciaio del Belvedere, in which , at given time intervals , the investigated glacier was used to conflue. The available docum entati on, mainly by Monterin and Sacco, as well as the measurements carried out at the ter – minus by Demaria and others, durin g the yearly glacier surveying organized by the Comitato Glaciologico Italiano, start ing from 1925, are lat – er discussed. The researches carried out by VAW/ETH on Belvedere and Nordend glaciers are also reviewed, as strongly documenting the recent fluctuations of Ghiacciaio del Nordend. Th e climatic data available for this Alps area are quit e poor , so that the glacier response to climate can just be guessed as ord er of magnitude. The estimated glacier response time to the climatic fluctuations is then checked on the base of a simple empiric formula , the result of which is in substanti al agreement. Eventually a comparison of the respons e time of Nordend, Belvedere and Nord delle Locce glaciers is attempted; it clearly results the response time dependance on the physical parameters which characterize each of the three glaciers, under the same climatic conditions.

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