Le Quesne C., C. Acuña, J. Boninsegna, A. Rivera, & J. Barichivich  (2009) : "Long-term glacier variations in the Central Andes of Argentina and Chile, inferred from historical records and tree-ring reconstructed precipitation" Palaeogeography, Palaeoclimatology, Palaeoecology, 281, 334 - 344.

Snow and ice in the Central Andes of Chile and Argentina (33–36 °S) are the major source of water for the highly populated regions near the cities of Santiago and Mendoza. However, our knowledge of the forces driving the general glacier retreat in the region is limited. In order to obtain a long-...


Zamora R., D. Ulloa, G. García, R. Mella, J. Uribe, J. Wendt, A. Rivera, G. Gacitúa & G. Casassa.  (2009) : "Airborne radar sounder for temperate ice: initial results from Patagonia" Journal of Glaciology, 55 (191), 507-512.

We describe the development of a low-frequency airborne radar specifically designed forthe sounding of temperate ice. The system operates at a central frequency of 1 MHz and consists of animpulse transmitter with an output volt age up to 5000 V and a digital receiver with a maximum gain of 80 dB....


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...


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