IGB

Connexion

(Article of periodic en Anglais - 2013)

Document title

Critical assessment of the 2°C min-1 threshold for thermal stress weathering

published at : Southern African geomorphology : looking back, moving forward

Authors(s) and Affiliation(s)

BOELHOUVERS J. (1) ; JONSSON M. (1) ;
(1) Dept. of Social and Economic Geography, Univ., Uppsala, SUEDE

Abstract

Rock surface temperature changes in excess of 2°C min-1 have been argued to result in permanent strain in rock. The single threshold value and the supposed importance of a rate of 2°C min-1 rock temperature change is rejected, based on lack of a sufficient empirical basis, contrasting results from acoustic emission studies, varying strength properties of different rock types, lack of data on actual strain resulting from short-term temperature variations, and lack of notable long-term weathering effects in Nordic environments. Based on the presented discussion, the role of thermal shock weathering in cold regions is questioned and renewed emphasis is placed on the importance of absolute temperature and measurement of strain, as well as spatial temperature gradients

Source

Thematical fascicle

published at : Geografiska annaler. Series A. Physical geography / ISSN 0435-3676 / CODEN GAPGAP

Editor : Svenska sällskapet för antropologi och geografi, Stockholm - SUEDE (1965)

Millesime : 2013, vol. 95, no 4 [pp. 285-293]

Bibliographic references : 1 p.

Collation : fig., tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 2704 A

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1111/geoa.12026

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2014
Refdoc record number (ud4) : 28164058 : Permanent link - XML version
Powered by Pxxo