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Electric Potential and Fréchet Derivatives for a Uniform Anisotropic Medium with a Tilted Axis of Symmetry

Greenhalgh, S. ; Marescot, L. ; Zhou, B. ; Greenhalgh, M. ; Wiese, T.

In: Pure and Applied Geophysics, 2009, vol. 166, no. 4, p. 673-699

Resistivity inversion in 2-D anisotropic media: numerical experiments

Wiese, Timothy ; Greenhalgh, Stewart ; Zhou, Bing ; Greenhalgh, Mark ; Marescot, Laurent

In: Geophysical Journal International, 2015, vol. 201, no. 1, p. 247-266

Internal structure and permafrost distribution in two alpine periglacial talus slopes, Valais, Swiss Alps

Scapozza, Cristian ; Lambiel, Christophe ; Baron, Ludovic ; Marescot, Laurent ; Reynard, Emmanuel

In: Geomorphology, 2011, vol. 132, no. 3-4, p. 208-221

In order to determine the spatial extension and the characteristics of permafrost within alpine talus slopes, two sites located in the western part of the Swiss Alps were studied using borehole drilling and electrical resistivity tomography (ERT) profiles. Three boreholes were drilled along an upslope–downslope transect in both talus slopes. In both sites, frozen sediments are present only in...

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

Hilbich, Christin ; Marescot, L. ; Hauck, Christian ; Loke, M. H. ; Mäusbacher, R.

In: Permafrost and Periglacial Processes, 2009, vol. 20, no. 3, p. 269-284

The inversion and interpretation of electrical resistivity tomography (ERT) data from coarse blocky and ice-rich permafrost sites are challenging due to strong resistivity contrasts and high contact resistances. To assess temporal changes during ERT monitoring (ERTM), corresponding inversion artefacts have to be separated from true subsurface changes. Appraisal techniques serve to analyse an ERTM...