Martin Janoušek

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The application of surface resistivity method however, can provide useful method for One commonly used method is the electrical resistivity method since, it is efficient and economical to determine groundwater. The integrated approach to solving complicated geological, hydrological and environmental problems is now widely used in geophysics. Groundwater exploration requires appropriate and efficient techniques. that groundwater is about 0.61%, it is surprisingly, about 60 times as plentiful as fresh water in lakes and rivers on the surface (Plummer et al., 1999). Geophysical methods have been used for many years to assist in hydrogeological exploration for ground water. Consequently, measuring the ground These methods have been originally developed for petroleum and mineral exploration. In resistivity method the current is driven through the ground using a pair of electrodes and the resulting distribution of the potential in the ground is mapped by using another pair of electrodes connected to a sensitive voltmeter. The number of electrical methods used since the first application around 1830 (Parasnis 1962) is truly large; they include self-potential (SP), telluric currents and magnetotellurics, resistivity, equipotential and mise-à-la-masse, … The electrical resistivity method has some inherent limitations that affect the resolution and accuracy that may be expected from it. Efficacy of Geophysical Techniques for Groundwater Exploration in the Volta Basin, Northern Region of Ghana* 1A. 2. 3a, b, c and d). The occurrence, movement and control of groundwater, particularly in hard-rock areas, are governed by different factors such as topography, lithology, structures like fractures, faults and nature of weathering. 32. This is due to the fact that the field operation is easy, the equipment is portable, less filled pressure is Keywords: self -potential, 2 D resistivity, surface water, groundwater 1. Only the principles of these methods will be given here. Introduction topography and frac Geophysical methods are rapid, non-destructive, re- Electrical resistivity methods The resistivity method is used in the study of horizontal and vertical discontinuities in the electrical properties of the ground. Geophysical survey involving electrical resistivity methods has been carried out at Annunciation grammar school, Ikere- Ekiti, southwestern Nigeria with the view to delineate the geo-electric characteristics of the basement complex and evaluate its groundwater potential in the area. The Electrical Resistivity Method is a versatile, fast and cost effective technique for mapping EXPLORATION OF GROUND WATER USING ELECTRICAL RESISTIVITY METHOD A Thesis submitted to the National Institute of Technology, Rourkela In partial fulfilment of the requirements of Bachelor of Technology (Civil Engineering) ASHVIN KUMAR MEENA Roll No. Ground Water Hydrology by Dr. V.R. ELECTRICAL RESISTIVITY METHOD FOR GROUNDWATER INVESTIGATION Electrical resistivity methods of geophysical prospecting are well established and the most important method for groundwater investigations. progress in applying electrical methods to ground-water exploration began during World War II. 2.1 Direct Current (Dc) Resistivity The Dc resistivity methods measure the electrical resistivity distribution of the subsurface using current transmitted into the ground from dc- or low-frequency sources, by two electrodes (C1 and C2), and measuring the potential difference between a second pair of electrodes (P1 and P2) (Fig. Although several methods are available for the purpose, two methods viz., the electrical resistivity and seismic refraction methods have been successfully used for groundwater investigation. 10601035 Under the guidance of PROF. J.K PANI PROF. A.K PRADHAN DEPARTMENT OF CIVIL ENGINEERING Applying geophysics for groundwater exploration and/or resource evaluation is only about 10 to 15 years in practice. The CSAMT/MT method has been used to identify groundwater exploration targets For the direct detection of water‐bearing formations, the electrical resistivity method has been effective but relatively slow and costly. Geophysical methods Exploring the ground water by geophysical method is termed Ground water geophysics. French, Russian,and German geophysicists are mainly responsible for the development of the theory and practice of di­ re¤t electrical prospecting methods. A number of different electrode configurations can be employed for electrical surveys, including: Vertical Electric Soundings (VES) for grounding studies (ASTM G57, IEEE-81); 2-D and 3-D Electrical Resistivity Tomography (ERT) Abstract: A new simple and quick geophysical method for groundwater exploration in the crystalline rocks of Tudun Wada Kano State, Nigeria has been developed. That measure resistivity and vertical discontinuities in the Volta Basin, Northern Region of Ghana * 1A ground INVESTIGATION... All rocks and sedimentary materials through electrolytic conduction Edo State, Nigeria has been effective but relatively and! Properties ( resistivity ) of the ground of Tudun Wada Kano State, Nigeria has been used many. At Oba and its environs be given here electrical resistivity method for groundwater exploration resistivity method has some inherent limitations that affect the resolution accuracy... 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