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(Article of periodic en Anglais - 2011)

Document title

Assessment of doline geometry using geophysics on the Quercy plateau karst (South France)

Authors(s) and Affiliation(s)

VALOIS R. (1) ; CAMERLYNCK C. (1) ; DHEMAIED A. (1) ; GUERIN R. (1) ; HOVHANNISSIAN G. (2) ; PLAGNES V. (1) ; REJIBA F. (1) ; ROBAIN H. (2) ;
(1) Univ. Pierre et Marie Curie -Paris 6, UMR 7619 Sisyphe, Paris, FRANCE
(2) Institut de Recherche pour le Développement (IRD) Centre Ile-de-France, BONDY, FRANCE

Abstract

In this study, three depressions in South France (Orniac, Lot) were identified and characterized using combined geophysical methods. Apparent conductivity mapping allows precise definition of dolines corresponding to topographic depressions. It also reveals other dolines that are hidden by soil cover. Electrical resistivity and seismic refraction tomography provide detailed cross-sections. Even though the dolines studied are close one to another, they exhibit great variability in shape and content. Moreover, time-lapse data show that the most saturated regions are on the edges of the first doline. Such information helps to evaluate human impacts and forecast potential groundwater contamination

Source

Article of periodic

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

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

Millesime : 2011, vol. 36, no9 [pp. 1183-1192]

Bibliographic references : 31 ref.

Collation : 11 fig.

Language

Anglais

INIST-CNRS, Cote INIST : 17355

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/esp.2144

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2011
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