resistivity method

resistivity method

[‚rē‚zis′tiv·əd·ē ‚meth·əd]
(engineering)
Any electrical exploration method in which current is introduced in the ground by two contact electrodes and potential differences are measured between two or more other electrodes.
References in periodicals archive ?
The major principle of electrical resistivity method is based on the behaviour of the earth to the flow of electrical current.
Specific topics include causes of house subsidence in an area adjacent to Illinois' sinkhole plain, applying the electrical resistivity method in steeply dipping karst terrane, instrumentation and preliminary results from probing the plumbing of Wakulla Spring, water level variation and predicting the Pingshan Sinkhole in Guizhou in southwestern China, the numerical analysis of embankments supported by geosynthetics over drilled shafts in karst terrains, and gypsiferous soils as an engineering problem.
The resistivity method is often used to study the problem of the seawater encroachment.
The electrical resistivity method will furnish information on the surface geology unobtainable by other methods in groundwater studies.
The main advantage of the resistivity method over sampling are: specific consideration of the actual water content at time of measurement, minimal disturbance of the natural soil structure and chemical composition, and a reduced spatial variability due to the possibility of repeated measurements at one spot.
The electrical resistivity method involved using the vertical electrical sounding (VES) technique while horizontal profiling was adopted for the magnetic method.
The electrical resistivity method, of all the surface geophysical methods, has been applied most widely in ground water exploration studies (Ballukray, 1996, Majumdar et.
The early 1900's brought about the development of the electrical resistivity method in deciphering groundwater potential.
The values of electrical resistivity assigned to the rectangular prisms of the proposed model were chosen according to the Standard Guide of Using the Direct Current Resistivity Method for Subsurface Investigation(DesignationD6431-99).
The basic concept of electrical resistivity method is to demarcate higher resistivity zones within the low electrical resistivity rocks at the sub surface.
In general, the resistivity method involves measuring the electrical resistivity of earth materials by introducing an electrical current into the ground and monitoring the potential field developed by the current.
The anomalies found in every profile demonstrates the effectivity of the electric resistivity method in the survey of underground structures since it is possible to observe a good resolution of geometry and depth, providing Civil engineers with an reliable alternative in the analysis of foundations, piping, ducts, or underground structures.