Site characterization through electrical properties of the ground itself. Download groundwater exploration surface geophysical methods electric resistivity withdrawal PPT for free. View and Download PowerPoint Presentations on ELECTRICALRESISTIVITY METHOD OF GEOPHYSICAL EXPLORATION PPT. See our Privacy Policy and User Agreement for details. well known method used in groundwater exploration. Exploration for Groundwater Aquifers, using Vertical Electrical Sounding (VES) method, in Wad Hamid area – River Nile State, Sudan Mohammed Adam Ginaya1, Abbas Musa Yagoob2 Department of Water Resources Engineering, College of Water Engineering & Environment, Sudan … BY Electrical Method Electrical resistivity method is based on the difference in the electrical conductivity or the electrical resistivity of different soils. Mysore. Common applications of resistivity surveying Groundwater exploration Mineral exploration, detection of cavities Oil exploration Waste site exploration Electrical methods employ a variety of measurements within the Earth. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. 2-Induced Polarization (IP) - This is an active method that is commonly done in conjunction with DC Resistivity. View Geophysical Study Resistivity Method PPTs online, safely and virus-free! I have published numerous papers on various subjects, including geophysical methods for the detection of underground voids, road radar for pavement investigations, geophysical methods for seismic site classification, and the use of electrical resistivity methods for the aggregate industry. See our User Agreement and Privacy Policy. If you continue browsing the site, you agree to the use of cookies on this website. To best understand how electrical resistivity surveys for groundwater exploration work today, it’s important to understand where resistivity testing began. Groundwater Exploration Methods In contrast, electrical and seismic methods can detect vertical, as well as lateral, contrasts of resistivity You can change your ad preferences anytime. 54. Note the low resistivity (about 0.2 ohm•m) of sea water due to the relatively high salt content. Centre for Advanced Studies in Earth Science, 1- Passive Techniques. Looks like you’ve clipped this slide to already. Electrical Resistivity Method (ERM) is one of geophysical tool that offer very attractive technique for subsurface profile characterization in larger area. 1. The electrical resistivity survey and electromagnetic methods have been used in groundwater studies because of the close A resistivity contrast between the target and the background geology must exist. Now customize the name of a clipboard to store your clips. GEOPHYSICAL We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. Clipping is a handy way to collect important slides you want to go back to later. The resistivity of subsurface rock formations is one of the physical properties determined through the process of logging that is performed on most oil and gas wells, utilizing instrumentation inserted into the wellbore. 1 Electrical Resistivity Method: In this method the electrical resistivity of the formations is measured by passing a current. Although there is … The electrical resistivity method is most widely accepted and used in ground water exploration. We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. Brothers Conrad and Marcel Schlumberger performed the very first investigation of how electrical current moves through the ground and what you can detect using an electrical resistivity survey in the early 1900s. • Resistivity method • Induced polarization method (IP) • Self-potential (SP) method ... • Exploration of metalliferous mineral deposits • Detection of water circulation into the ground • Monitoring dams or tank integrity. Lecture 13-electrical method -field procedure, Customer Code: Creating a Company Customers Love, Be A Great Product Leader (Amplify, Oct 2019), Trillion Dollar Coach Book (Bill Campbell). If you continue browsing the site, you agree to the use of cookies on this website. The method allows a quantitative result to be obtained by using a controlled source of specific dimensions. The resistivity of rock formation gives an indication of the presence of groundwater. Find PowerPoint Presentations and Slides using the power of XPowerPoint.com, find free presentations about ELECTRICALRESISTIVITY METHOD OF GEOPHYSICAL EXPLORATION PPT. The resistivity method is used in the study of horizontal and vertical discontinuities in the electrical properties of the ground. The concept of formation resistivity plays an important part in log analysis. Applicable alternative technique in groundwater exploration such as ERM which complement with existing conventional method may produce comprehensive and convincing output thus effective in terms of cost, time, data coverage and … 1. Learn new and interesting things. 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). This makes the resistivity method an ideal technique for mapping the saline and fresh water interface in coastal areas. 2- Active Techniques. Surface electrical resistivity surveying is based on the principle that the distribution of electrical potential in the ground around a current-carrying electrode depends on the electrical resistivities and distribution of the surrounding soils and rocks. Get ideas for your own presentations. Studies have showed that groundwater could be explored using electrical resistivity methods (Olorunfemi and Fasoyi, 1993; Olasehinde, 1999; Alile et al., 2008). 1- DC Resistivity - This is an active method that employs measurements of electrical potential associated with subsurface electrical current flow generated by a DC. As for groundwater potentiality, the second … See our User Agreement and Privacy Policy. GEOPHYSICAL INVESTIGATION ELECTRICAL METHODS. There is no wholly satisfactory electrical system from the standpoint of resolution of subsurface resistivity configuration at the required scale, depth of … Resistivity and Induced Polarization (IP) are commonly-used geophysical survey methods for measuring the electrical properties of subsurface rock. Many are downloadable. 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. Share yours for free! INVESTIGATION If you continue browsing the site, you agree to the use of cookies on this website. ELECTRICAL METHODS. Electrical Resistivity Tomography (ERT) is a versatile method in the geophysics toolbox; suitable for a broad range of applications and environments such as groundwater prospecting and contamination, mineral exploration, geological mapping and geotechnical investigations. 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