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Monitoring of Mountain Permafrost in the Central Andes, Cordon del Plata, Mendoza, Argentina

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  • Dario Trombotto
  • Enrique Buk
  • José Hernández

Abstract

Sixty per cent of the Rio Blanco basin (54 km2), located between 32°54′ and 33°01′S and between 69°27′ and 69°15′W, in the Cordón del Plata, Frontal Cordillera, can be considered to be periglacial. The most important forms in the area are rock glaciers, two of which, Morenas Coloradas and El Salto, are active down to 3400 and 3600 m ASL respectively. The rock glaciers are not in equilibrium with the present climate since the mean annual air temperature is 1.6°C at 3560 m ASL and the 0°C air isotherm is calculated to be at 3860 m ASL. A third landform is the cryoplanation surface Lagunita del Plata which, at an elevation of approximately 4000 m ASL, has a mean annual temperature of −2°C and contains bodies of insular permafrost. © 1997 John Wiley & Sons, Ltd. Soixante pour cent du bassin du Rio Blanco (54 km2), situé entre 32°54′ et 33°01′S et entre 69°27′ et 69°15′ ouest, dans le “Cordon del Plata, Frontal Cordillera” peuvent être considérés comme périglaciaires. Les formes les plus importantes de la région sont des glaciers rocheux dont deux d'entre eux, “Morenas Coloradas” et “El Salto”, sont actifs respectivement jusqu'à 3400 m et 3600 m d'altitude. Les glaciers rocheux ne sont pas en équilibre avec le climat actuel bien que la température moyenne actuelle de l'air est de 1.6 °C à 3560 m et que l'isotherme de l'air est, par calcul, estimée se trouver à 3860 m d'altitude. Une troisième forme est la surface de cryoplanation “Lagunita del Plata” qui, à une altitude d'approximativement 4000 m au dessus du niveau de la mer, a une température moyenne annuelle de −2°C et contient de îlots de pergélisol. © 1997 John Wiley & Sons, Ltd.

Suggested Citation

  • Dario Trombotto & Enrique Buk & José Hernández, 1997. "Monitoring of Mountain Permafrost in the Central Andes, Cordon del Plata, Mendoza, Argentina," Permafrost and Periglacial Processes, John Wiley & Sons, vol. 8(1), pages 123-129, January.
  • Handle: RePEc:wly:perpro:v:8:y:1997:i:1:p:123-129
    DOI: 10.1002/(SICI)1099-1530(199701)8:13.0.CO;2-M
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    1. Sally Rangecroft & Andrew J. Suggitt & Karen Anderson & Stephan Harrison, 2016. "Future climate warming and changes to mountain permafrost in the Bolivian Andes," Climatic Change, Springer, vol. 137(1), pages 231-243, July.

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