Using thermal imagings in the study of periglacial forms and processes

Petru URDEA

Abstract


Periglacial morphogenetic domain is marked by the presence of landforms whose genesis and evolution is closely related to thermal conditions. It goes without saying therefore of interest to know the thermal characteristics of these periglacial landforms. To achieve this objective, the use of  clasical thermometers is also expensive and laborious process, but in our opinion, the most expeditious way is to use a infrared termocamera. Tacking into account that radiant temperature of the Earth surface is a a function of their internal temperature or kinetic temperature, and their ability to emit radiation, strongly dependent on the thermal properties of the material - with physical and compositional differences -, we consider that a thermal image can also reveal just some of the differences in the morphological structures. Energy flux that occurs at topographic surface interactions with the atmosphere cause individualization of microclimates, with implications for the appearance and development of the periglacial morphogenetic processes like creep, fros heaving, solifluction, thermal sorting and weathering. A way of understanding of these processes and highlighting small-scale differentiation knowing as much detail as possible, is knowing the thermal image, thermal imprint of each microform. 


Keywords


periglacial forms and processes

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DOI: http://dx.doi.org/10.4316/GEOREVIEW.2012.0.0.264