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First in situ tests of a new electrostatic resistivity meter
Author(s) -
Flageul Sébastien,
Dabas Michel,
Thiesson Julien,
Rejiba Fayçal,
Tabbagh Alain
Publication year - 2013
Publication title -
near surface geophysics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.639
H-Index - 39
eISSN - 1873-0604
pISSN - 1569-4445
DOI - 10.3997/1873-0604.2012063
Subject(s) - electrical resistivity and conductivity , metre , electrical resistivity tomography , geology , mineralogy , electrical engineering , engineering , physics , astronomy
If field applications of the electrostatic method are limited to roughly the first ten metres due to the necessity of staying in a low‐induction number domain, the possibilities it opens in urban area surveying, dry hole resistivity logging, non‐destructive testing and laboratory studies of the complex resistivity justify the design of a new multi‐frequency resistivity meter presenting a very low‐input capacitance and high‐phase sensitivity. After a first series of sample measurements in the laboratory, the new resistivity meter was tested in two different field contexts: the mapping of building remains in a Gallo‐Roman archaeological site under a flat meadow and the assessment of the thickness of anthropogenic layers in a town. The first test allowed a direct comparison with previous galvanic resistivity measurements and proved a very good agreement between the magnitude and spatial distribution of electrical resistivity. The second test established its reliable measuring abilities in a disturbed environment.