Wendt A., G. Casassa, A. Rivera & J. Wendt. (2009) : "Reassessment of ice mass balance at Horseshoe Valley, Antarctica" Antarctic Science, 21(5), 505-513.

Horseshoe Valley (80º81'8"S, 81º82'2"W) is a 30 km wide glaciated valley at the south-eastern end of Ellsworth Mountains draining into the Hercules inlet, Ronne Ice Shelf. The ice at Horseshoe Valley has been considered stable; now we use Global Positioning System (GPS) measurements obtained betwe...


Koç N., Njåstad B., Armstrong R., Corell R.W., Jensen D.D., Leslie K.R., Rivera A., Tandong Y. & Winther J-G. (ed) (2009) : " Melting snow and ice: a call for action" Centre for Ice, Climate and Ecosystems, Norwegian Polar Institute, Tromso, Norway, 51 pp.

In this document we provide a brief overview of the response of snow and ice to a warming climate. Significant changes in sea ice cover, snow cover, lake and river ice cover, permafrost temperatures, glacier and ice sheet mass have been observed over the last decades. It appears that the changes ...


Corripio, J, R. Purves & A. Rivera (2008) : "Modeling climate-change impacts on mountain glaciers and water resources in the Central Dry Andes" In: ORLOVE, B., WIEGANDT, E. & LUCKMAN, B. (Eds.). Darkening Peaks: Glacier Retreat, Science and Society, University of California Press, USA, p. 126-135.

The Central Dry Andes form a high mountain barrier dividing Chile and Argentina between around latitude 31º and 35º S. They run north - south, reaching the highest elevations in the Southern Hemisphere: Aconcagua is 6,954 m a.s.l., while many other peaks rise over 6,000 m. Their slopes descend ab...


Pellicciotti, F., J. Helbing, A. Rivera, V. Favier, J. Corripio, J. Araos, J. Sicart, M Carenzo (2008) : "A study of the energy balance and melt regime on Juncal Norte Glacier, semi-arid Andes of central Chile, using melt models of different complexity" Hydrological Processes , 22, 3980 - 3997.

We use meteorological data from two automatic weather stations (AWS) on Juncal Norte Glacier, central Chile, to investigate theglacier–climate interaction and to test ablation models of different complexity. The semi-arid Central Andes are characterized by dry summers, with precipitation close to...


Rivera, A., F. Bown, C. Acuña, F. Ordenes (2008) : "Chilean glaciers as indicators of climate change" Terra Glacialis, 11, 193-207.

This work presents a summary of Chile’s present glacial environment and its most significant recent variations. Though the behaviour of some glaciers may be driven by non-climatic factors, the majority of them experienced a linear shrinkage and a generalized thinning as a result of both an increa...


Rivera, A., J. G. Corripio, B. Brock, J. Clavero & J. Wendt (2008) : "Monitoring ice capped active Volcán Villarrica in Southern Chile by means of terrestrial photography combined with automatic weather stations and GPS" Journal of Glaciology, 54(188), 920 - 930.

Volcán Villarrica (39º25' 12" S, 71º56'27" W; 2847ma.s.l.) is an active ice-capped volcano located in the Chilean lake district. The surface energy balance and glacier frontal variations have been monitored for several years, using automatic weather stations and satellite imagery. In recent field...


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