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Debris slopes ventilation in the periglacial zone of the Tatra Mountains Poland and Slovakia The indicators


, : Debris slopes ventilation in the periglacial zone of the Tatra Mountains Poland and Slovakia The indicators. Cold Regions Science and Technology 74-75(none): 0-10

This paper examines environmental indicators of debris slopes ventilation in the periglacial zone of the Tatra Mountains. There were analysed geomorphological and meteorological influences on a ground surface temperature anomaly, hoarfrost, air ventilation funnels and snow melt windows, as well as locations of long-lying snow and permafrost patches. The results show that debris slope ventilation is a common phenomenon occurring in different periods of the year. Its range is influenced mainly by substratum porosity (ground and snow cover), and the difference between the pressure inside and outside this medium (pore and atmospheric air temperature/dense; wind velocity). The height of the slope ( chimney ) is less important. Some phenomena assumed to be evidences of slope ventilation are often connected with other factors influencing the thermal balance of the ground and the size of snow accumulation.Debris slope ventilation occur during the whole year. Its range is influenced by substratum porosity, temperature gradient and wind velocity. Slope ventilation is usually comprises the most porous near surface layer. Deeper air circulation occurs only inside considerably porous layers. Some phenomena assumed as evidences of slope ventilation are often connected with other factors..

US$19.90

DOI: 10.1016/j.coldregions.2012.01.007


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