resistivity data Articles
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Underground fracture detection case study
This underground fracture detection survey was completed by ZZ Resistivity Imaging Pty. Ltd. Two 12m electrode spacing 32-core cables were used to collect resistivity data. Then the data is coversed into true resistivity distribution images. Figure below clearly shows the glide plane is located between high (red) and low resistivity (green) zones. ...
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A new categorisation method of resistivity instruments
This paper presents a new categorisation method of resistivity instrument: Conventional arrays-oriented resistivity instruments (conventional instruments) vs. Comprehensive array-oriented resistivity instruments (comprehensive instruments). The conventional instruments were designed for conventional array data collections. The comprehensive instruments were designed for universal resistivity ...
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The amount of data FlashRES can collect in one hour
FlashRES can collect over 62k data points in one hour. Some of the 62k data however may not be useful to the operator. Operator needs assess the geological data to find which part of the resistivity data is less useful. ZZ provides data filtering software to filter unwanted data points for operators. FlashRES resistivity meter records the whole three curves for each current pair. Users can ...
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Hydrogeophysics: VLF / SuperSting multi-electrode electrical resistivity surveys
PROJECT: VLF and multi-electrode SuperSting surveys at a large tract of farmland LOCATION: California (specific location is Confidential, per client's request) PROJECT DESCRIPTION: Designed and performed a reconnaissance VLF survey and subsequent exploratory SuperSting 84-electrode geophysical surveys across a suspected water-bearing trend occurring within a large tract of farmland at a ...
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Superior abrasion resistance demanded by sump cleaning
Acquired by a open pit mining company located in the Minas Gerais province for a slurry application (up to 60% solids concentration) in a sedimentation sump, the Grindex Bravo 60 pump lived up to its name, proving it's the ideal solution for a wide range of similar installations. In this case the Bravo 60 pump replaced a conventional dredging installation with several notable advantages, among ...
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Using Resistivity for Basalt Site Characterization - Case Study
Purpose A mining company in Turkey hoped to determine existing and new alternative basalt zones at an existing basalt mining site by using Electrical Resistivity Imaging (ERI). Process Our client, Ali Karan, used 84 electrodes spaced at 10 meters and two lines 5 meters apart inside the study area. The dipole-gradient array was used to collect the 2D electrical resistivity imaging data ...
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Hydrogeophysics (Groundwater Geophysics): SuperSting R8 multi-electrode electrical resistivity surveys at a closed refinery
PROJECT: Multi-electrode SuperSting geophysical surveys at a complex abandoned petroleum refinery site in Montana LOCATION: Montana (specific location is Confidential, per client's request) PROJECT DESCRIPTION: Designed and performed SuperSting 56-electrode geophysical surveys across approximately 50 acres of land that once supported a long-established liquid fuels and gas refinery. The ...
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The Vane Cone: A New Device for Soil Shear Strength Measurement
A considerable number of in-situ tests have been devised for measuring field soil shear strength parameters. These tests include, among many others, cone penetration and vane shear devices. The conventional form of each of these two devices controls the type of soil deformation, which may limit the use of the measured soil shear resistance data. In this study both vane and cone devices were ...
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Potential soil characteristics for riverbank filtration using 2-D ground resistivity in Kota Lama Kiri, Kuala Kangsar
Identifying the subsurface profile for riverbank/bed filtration (RBF) using conventional methods such as drilled boreholes is usually labor intensive, costly and acquires only 1-D profiling. Hence, a 2-D ground resistivity method was used as an alternative to obtain a 2-D subsurface profile by extending to 200 m length at Kota Lama Kiri, Kuala Kangsar, Perak site area. Four resistivity survey ...
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Groundwater-recharge estimation using a surface electrical resistivity method in the Himalayan foothill region, India
A new method for the estimation of groundwater recharge is presented using a surface resistivity method and isotope technique. A linear relationship was obtained between the resistivity of the unsaturated top layer and the recharge estimated using a tritium tagging technique for the piedmont zone in the Himalayan foothill region, India. The relation can be used for the estimation of recharge ...
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Compare popular resistivity meters with FlashRES
Although most resistivity meters nowadays can collect resistivity, IP and SP data and most of these systems are multi-channal resistivity meters, there is still a technical gap between traditional and next generation resistivity meters. FlashRES has six to 8 times more channel than traditional system, this means larger data quantity, which could help the resistivity inversion image generated ...
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Use of geological mapping tools to improve the hydraulic performance of SuDS
Most cities in Denmark are situated on low permeable clay rich deposits. These sediments are of glacial origin and range among the most heterogeneous, with hydraulic conductivities spanning several orders of magnitude. This heterogeneity has obvious consequences for the sizing of sustainable urban drainage systems (SuDS). We have tested methods to reveal geological heterogeneity at field scale ...
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The Sting Cave
Summary: A cave had been detected by Gasch & Associates Inc. at the 4T ranch north of Austin, Texas. In order to test the cave detection capability of the Sting memory earth resistivity meter and the newly developed Swift automatic multi-electrode system, a dipole-dipole resistivity profile was measured over the known cave. After collecting the data with the Sting/Swift system a ...
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Landslide Investigation in Turkey - Case Study
After a landslide, how do you know it’s safe to build again? In 2011, after a record-setting month of rainfall, a landslide devastated the infrastructure and roads near Cankiri in Northern Turkey, effectively cutting the highway from two cities. Fortunately, the landslide occurred in the evening, and there were no casualties. Our client, the Geophysical Modeling Group from ...
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Panama Canal: Boat Towed 3D Resistivity Surveys - Case Study
The Panama Canal Authority (ACP) needed to expand the canal in order to accommodate larger ships (and more traffic)—but first, they needed to know two things: what types of sediment loads needed to be dredged out—and more importantly—how much these loads would cost. That’s where AGI marine resistivity imaging methods come in. For two months in 2008, a team used boat-towed ...
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Identification of Archeological Remnants
Czorsztyn Castle, Poland 2D Electrical Imaging Objective Study area was within the ruins of the 14th century Czorsztyn Castle, located in the boundaries of Pieniny National Park (southern Poland). The main goal of this research was to check if one of the stone wall residues continues under the ground surface. Additionally, an attempt was made to identify other geoelectrical anomalies that may ...
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Geophysical and physicochemical characterization of organic waste contamination of hydrolithofacies in the coastal dumpsite of Akwa Ibom State, southern Nigeria
Geophysical and physicochemical methods were carried out to examine the effect of leachate on groundwater in a dumpsite location in Akwa Ibom State, Nigeria. This was done to ascertain the level of organic contamination in the wells located in the study area. The analysis of water samples from boreholes close to the dumpsite was done to constrain the interpretation of electrical resistivity ...
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Pullout Resistance of Steel Geogrids with Weathered Clay as Backfill Material
The pullout resistance of welded steel geogrid reinforcement embedded in poor-quality, cohesive-frictional backfill material such as weathered clay was investigated. Laboratory pullout tests were conducted on various reinforcement sizes, mesh geometry, and compaction conditions of the backfill material. Field pullout tests were also conducted to investigate the pullout resistance of ...
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3D Heap Leach Monitoring - Case Study
3D Electrical Imaging Objective Study was performed at a Heap Leach Copper Mining site in Chile to determine dry and saturated zones in order to improve the irrigation at the Heap Leach Copper Mining and increase the production of concentrate of Copper. Layout The surveys were performed on 25th of February 2015 in Chile with AGI SuperSting WiFi R8 RES/IP instrument with 56 ...
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Application of radiomagnetiotelluric method case study
Investigations of the landfill of industrial wastes by the RMT method The test site is the landfill of the coal ashes from power plants. The landfill was closed about 5 years ago. Material of the landfill is represented by powder-like particles and granules with the cross sizes from several millimeters up to the first centimeters. Wastes fill in a V-shaped valley of a stream (Fig. 1). The top ...
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