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Processes controlling rapid temperature variations on rock surfaces

Auteur(s) et Affiliation(s)

MOLARO, J.L.
Space Science Division, NASA Ames Research Center, Moffett Field, Etats-Unis
MCKAY, P.
Space Science Division, NASA Ames Research Center, Moffett Field, Etats-Unis


Description :
In arid environments, thermal oscillations are an important source of rock weathering. Measurements of temperature have been made on the surface of rocks in a desert environment at a sampling interval of 0.375 s, with simultaneous measurements of wind speed, air temperature, and incoming shortwave radiation. Over timescales of hours, the temperature of the rock surface was determined primarily by shortwave radiation and air temperature, while rapid temperature variations at intervals of seconds or less, were determined by wind speed. Results and discussion about the maximum values of temperature change and the threshold of the thermal stress on a rock.


Type de document :
Article de périodique

Source :
Earth surface processes and landforms, issn : 0197-9337, 2010, vol. 35, n°. 5, p. 501-507, nombre de pages : 7, Références bibliographiques : 22 ref.

Date :
2010

Editeur :
Pays édition : Royaume-Uni, Chichester, Wiley

Langue :
Anglais
Droits :
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