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A note on ground thermal regimes and global solar radiation at 4720 m a.s.l., High Andes of Argentina

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  • Hans Happoldt
  • Lothar Schrott

Abstract

The near‐surface ground thermal regime at 4720 m a.s.l. is described and assessed in terms of its daily and annual fluctuations (frost cycles, freezing and thawing depths, etc.). Correlation between solar radiation and soil temperature in the uppermost parts of the soil is caused by intense radiation (mean annual value of 22.3 MJ m−2 d−1). Surface soil temperatures show an enormous amplitude (>50 °C in a depth of O.1 m) and frost cycles occur almost throughout the year. The seasonally frozen ground extends to only 1.5 m in depth. Le régime thermique du sol se décrit par ses variations journalières et annuelles (cycles de gel, profondeur de gel et de dégel, etc.). On a pu établir une étroite corrélation entre le rayonnement solaire et la température du sol dans ses couches supérieures. Etant donné l'intensité du rayonnement (valeur annuelle moyenne: 22.3 MJ m−2 jour−1), la température du sol montre de fortes amplitudes (> 50 °C à une profondeur de 0.1 m) et les cycles de gel se produisent quasiment tout au long de l'année. Le gel saisonnier pénètre jusqu'à 1.5 m dans le sol.

Suggested Citation

  • Hans Happoldt & Lothar Schrott, 1992. "A note on ground thermal regimes and global solar radiation at 4720 m a.s.l., High Andes of Argentina," Permafrost and Periglacial Processes, John Wiley & Sons, vol. 3(3), pages 241-245, July.
  • Handle: RePEc:wly:perpro:v:3:y:1992:i:3:p:241-245
    DOI: 10.1002/ppp.3430030312
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