Chiarle M., Mortara G., Nigrelli G., 2015, Evolution of the Arguerey and Breuil glaciers since the end of the Little Ice Age (Graian Alps, Italy), 19th Alpine Glaciology Meeting, Milano, 7-8 maggio 2015,
URL: http://www.cnr.it/prodotto/i/330240

This work aims to illustrate the evolution of the Arguerey and Breuil glaciers (La Thuile, Aosta Valley), from the end of the Little Ice Age (LIA) to the years 2000s. Glacier extent for specific time steps (1850, 1929, 1961, 1975, 1999, 2005) has been derived from topographic maps, orthophotos, and from data collected by the Italian Glaciological Committeeand by the Glariskalp Project. Acquired data were stored in a GIS, in order to allow a quantification of glaciers change over time. At the end of the LIA the Arguerey Glacier had an areal extent of about 2.26 km2_ in 2005 this glacier appeared fragmented in two main bodies, covering a total area of about 0.44 km2, with a reduction of 81% of the glaciated area over 150 years. At the end of the LIA the Breuil Glacier had an areal extent of about 3.39 km2_ in 2005 the glacier was subdivided in two bodies, for a total area of about 0.69 km2, with a reduction of 80% of the glaciated area in 150 years. A detailed reconstruction of glacier change through time will be provided. The above data will be completed with the most updated information gathered during the most recent glaciological surveys realized in the framework of the Italian Glaciological Committeeactivities. The evolutionary framework of the glaciers will be completed with a climatic characterization of the area in order to know the main climate elements and the monthly or seasonal variability of these. This work, carried out in the framework of the NextData project, aims to contribute to the knowledge of recent glacier evolution in the northwestern Italian Alps, also in support of studies on the impacts of climate change on high-altitude environments and resources.

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