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(Article of periodic en Anglais - 2014)

Document title

Evaluation of trenching, ground penetrating radar (GPR) and electrical resistivity tomography (ERT) for sinkhole characterization

Authors(s) and Affiliation(s)

CARBONEL D. (1) ; RODRÍGUEZ V. (1) ; GUTIÉRREZ F. (1) ; MCCALPIN J.P. (2) ; LINARES R. (3) ; ROQUÉ C. (4) ; ZARROCA M. (3) ; GUERRERO J. (1) ; SASOWSKY I. (5) ;
(1) Dept. de Ciencias de la Tierra, Universidad de Zaragoza, Zaragoza, ESPAGNE
(2) Geo-Haz Consulting Inc., Crestone, ETATS-UNIS
(3) Dept. de Geología, Universidad Autónoma, Barcelona, ESPAGNE
(4) Àrea de Geodinàmica Externa i Geomorfologia, Univ., Girona, ESPAGNE
(5) Dept. of Geology and Environmental Science, Univ., Akron, ETATS-UNIS

Abstract

This paper explores the suitability and advantages of combining the trenching technique with geophysical surveys [ground penetrating radar (GPR) and electrical resistivity tomography (ERT)] for sinkhole characterization in a mantled karst area. The approach is applied to 2 active sinkholes concealed by anthropogenic deposits and formed by contrasting subsidence mechanisms; collapse and sagging. The stratigraphic and structural relationships observed in the trench were then used to infer the spatial evolution of the sinkholes (e.g. enlargement), their kinematic behavior (episodic versus progressive), and to differentiate discrete subsidence events and their associated magnitude. Numerical dates were used to estimate average subsidence rates and the recurrence of subsidence events. Such integrated data sets may be used as an objective basis to forecast the future behavior of potentially damaging sinkholes and to assess the associated hazard and risk

Source

Article of periodic

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

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

Millesime : 2014, vol. 39, no2 [pp. 214-227]

Bibliographic references : 1 p.

Collation : 9 fig.

Language

Anglais

INIST-CNRS, Cote INIST : 17355

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/esp.3440

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2014
Refdoc record number (ud4) : 28518522 : Permanent link - XML version
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