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(Article of periodic en Anglais - 2008)

Document title

Tafoni development in a cryotic environment : an example from Northern Victoria Land, Antarctica

Authors(s) and Affiliation(s)

STRINI A. (1) ; GUGLIELMIN M. (2) ; HALL K. (3) ;
(1) Earth Sciences Dept., Univ., Milano, ITALIE
(2) DBSF, Insubria Univ., Varese, ITALIE
(3) Dept. of Geography, Geoinformatics and Meteorology, Univ., Pretoria, AFRIQUE DU SUD

Abstract

This paper does not discuss the origin of tafoni but rather attempts to contribute to understanding the processes involved in their growth. In particular, the paper aims to analyse the role of the thermal regime and of the wind in the development of these features. Geomorphological characterization of more than 60 tafoni in three different Antarctic sites (two coastal and one inland) between 74 and 76°S with sampling of weathering products and salt occurrences are described together with thermal data (on different surfaces) and wind speed recorded in different periods of the year in a selected tafone close to the Italian Antarctic station. The data suggest that there is no single key factor that drives the tafoni development, although thermal stress seems the most efficient process. While both salt weathering and thermal stress appear active in this cryotic environment, these are azonal processes and are therefore active in other climatic areas

Source

Article of periodic

published at : Earth surface processes and landforms / ISSN 0197-9337 / CODEN ESPLDB

Editor : Wiley, Chichester - ROYAUME-UNI (1981)

Millesime : 2008, vol. 33, no10 [pp. 1502-1519]

Bibliographic references : 50 ref.

Collation : 11 fig., 6 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 17355

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/esp.1620

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2009
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