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(Article of periodic en Anglais - 2009)

Document title

Applicability of electrical resistivity tomography monitoring to coarse blocky and ice-rich permafrost landforms

Authors(s) and Affiliation(s)

HILBICH C. (1) ; MARESCOT L. (2) ; HAUCK C. (3) ; LOKE M.H. (4) ; MÄUSBACHER R. (1) ;
(1) Geographical Inst., Univ., Jena, ALLEMAGNE
(2) Inst. of Geophysics, ETH, Zurich, SUISSE
(3) Dep. of Geosciences, Univ., Fribourg, SUISSE
(4) Geotomo Software, Penang, Gelugor, MALAISIE

Abstract

In this paper, the AA. aim to evaluate whether information provided by time-lapse ERT measurements in coarse blocky terrain is reliable enough to assess long-term permafrost degradation. They use different appraisal approaches : calculation of the depth of investigation (DOI) index and analysis of the resolution matrix in terms of formal model resolutions, and extend their application to repeated ERT surveys with the aim of analysing the possibility of differentiating between the signal (i.e. the temporal resistivity change) and the uncertainties induced by data acquisition (noise), inversion (artefacts) and interpretation. In addition, they apply synthetic modelling to demonstrate the usefulness of the DOI and resolution matrix techniques for the analysis of ERTM data, and to evaluate the internal structure of Murtèl rockglacier (Swiss Alps) that provides an example of coarse blocky surface conditions and massive ice beneath

Source

Article of periodic

published at : Permafrost and periglacial processes / ISSN 1045-6740 / CODEN PEPPED

Editor : Wiley, Chichester - ROYAUME-UNI (1990)

Millesime : 2009, vol. 20, no3 [pp. 269-284]

Bibliographic references : 1,5 p.

Collation : 6 fig., 1 tabl.

Language

Anglais

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/ppp.652

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