geophysical survey Articles

  • Geophysics: Refraction / ReMi surveys at a proposed wind farm

    PROJECT: Refraction and ReMi geophysical surveys at a proposed Wind Farm LOCATION: West of Ellensburg, Washington PROJECT DESCRIPTION: Designed and performed seismic refraction / ReMi surveys at 22 proposed Wind Turbine Generator sites for the primary purpose of obtaining shear-wave (Vs) and compressional-wave (Vp) velocities. This information enabled ...


    By ECA Geophysics

  • Geotechnical Geophysics: ReMi survey at a hazardous waste landfill.

    PROJECT: ReMi surveys at a closed waste disposal site LOCATION: The Dalles, Oregon PROJECT DESCRIPTION: Designed and performed ReMi Surveys at a closed 8-acre waste disposal site to passively measure microtremors within the upper 55 feet of the subsurface, in order to determine the depth to competent (non-rippable) basalt ...


    By ECA Geophysics

  • Geotechnical Geophysics: ReMi surveys for retail store expansions

    PROJECT: Refraction Microtremor (ReMi) surveys at active national chain stores LOCATIONS: Wenatchee, Washington / Woodinville, Washington / Yakima, Washington PROJECT DESCRIPTION: Designed and performed ReMi Surveys for active retail properties to passively measure microtremors within the upper 100 feet (30 meters) of the subsurface, in order to acquire ...


    By ECA Geophysics

  • Electrotelluric Geophysical Exploration

    Noted petroleum geologist Jack Elam writes about the abilities of Geophysic's patented electrotelluric tool known as the Petro-Sonde.  It's ability to give the client the depth, thickness and contents of a pay zone without the need for boreholes first.  By far the most advanced surveying tool on the market today the Petro-Sonde has been used in thousands of surveys all across the globe. ...


    By Geophysics International

  • Geotechnical Geophysics: Seismic refraction and refraction microtremor (ReMi) surveys

    ReMi Surveys are superior to MASW Surveys in the following ways: Ambient (ie, traffic and aircraft) “noise” is a hindrance to MASW surveys, yet is readily embraced / utilized by “passive” ReMi surveys Longer ReMi data records (ie, 30 seconds vs 8 seconds or less with MASW) capture lower frequency events We introduce high frequency impulsive energy that ...


    By ECA Geophysics

  • Integrated Geophysics: Magnetic / EMI surveys at an air force base

    PROJECT: EMI and Magnetic surveys at closed waste disposal sites LOCATION: Holloman Air Force Base near Alamogordo, New Mexico PROJECT DESCRIPTION: Designed and performed total-field magnetometer surveys in tandem with EM-31 terrain conductivity (EMI) surveys of approximately 53 acres of closed landfills at an Air Force base in New Mexico.  Survey ...


    By ECA Geophysics

  • Integrated Geophysics: GPR and EMI surveys at an air force site in the Mojave desert

    PROJECT: GPR and EMI surveys at closed waste disposal sites LOCATION: Cuddeback Air-to-Ground Gunnery Range in the Mojave Desert near Ridgecrest, California PROJECT DESCRIPTION: Designed and performed a GPR survey in tandem with an EM-31 terrain conductivity survey of nine closed landfilling areas at an abandoned Air Force gunnery range located in the ...


    By ECA Geophysics

  • Integrated Geophysics: Magnetic and EMI surveys at a solid waste landfill

    PROJECT: Magnetic and EMI surveys at a closed municipal solid waste landfill site LOCATION: Pasco, Washington PROJECT DESCRIPTION: Designed and performed a total-field magnetometer survey in tandem with an EM-31 terrain conductivity survey of a closed municipal solid waste landfill located east of Pasco, Washington.  Survey was designed to detect ...


    By ECA Geophysics

  • Integrated Geophysics: GPR and metal detection surveys at a retail facility

    PROJECT: GPR and EMI surveys at an active Safeway grocery store parking lot LOCATION: Rapid City, South Dakota PROJECT DESCRIPTION: Designed and performed a GPR survey in tandem with an EM-61 metal detection survey of a parking lot for a Safeway store in Rapid City, South Dakota. Surveys were designed to detect buried metallic and non-metallic drums and ...


    By ECA Geophysics

  • Integrated Geophysics: GPR and EMI surveys at an air force base

    PROJECT: GPR and EMI surveys at closed metallic waste disposal sites LOCATION: Hill Air Force Base Annex near Ogden, Utah PROJECT DESCRIPTION: Designed and performed a GPR survey in tandem with an EM-31 terrain conductivity survey regarding two suspected Mg/Th aeronautical debris dump sites at an Air Force base in Utah.  Survey was designed to ...


    By ECA Geophysics

  • Integrated Geophysics: EMI and ReMi surveys at a hazardous waste landfill

    PROJECT: EMI and ReMi surveys at a closed hazardous waste disposal site LOCATION: The Dalles, Oregon PROJECT DESCRIPTION: Designed and performed a 5-ft spaced EMI survey in tandem with ReMi surveys at a closed 8-acre waste disposal site. The goals of this integrated geophysical investigation were to 1) detect landfill boundaries, 2) identify locations ...


    By ECA Geophysics

  • Miscellaneous surveys

    This is a collection of various cases where the 2D resistivity imaging method pioneered by Advanced Geosciences Inc have been successfully applied. Click on a section below ...


    By Advanced Geosciences, Inc.

  • The Mycenaean drainage works of north Kopais, Greece: a new project incorporating surface surveys, geophysical research and excavation

    The attempt to drain the Kopais Lake was one of the most impressive and ambitious technical works of prehistoric times in Greece, inspiring myths and traditions referring to its construction and operation. The impressive remnants of the Mycenaean hydraulic works represent the most important land reclamation effort during prehistoric Greek antiquity, thus attracting the attention of the ...


    By IWA Publishing

  • Environmental surveys

    This is a collection of various cases where the 2D resistivity imaging method pioneered by Advanced Geosciences Inc have been successfully applied. ...


    By Advanced Geosciences, Inc.

  • 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 ...


    By ECA Geophysics

  • Integrated Geophysics: Combining methods to obtain a better perspective

    The combined information from different geophysical surveying methods often allows ECA's geophysicists to provide interpretations with much greater confidence. Magnetics with Electromagnetic Induction (EMI) GPR with Magnetics and/or EMI GPR with Metal Detection (EMI or EM-61) Seismic with EMI ...


    By ECA Geophysics

  • Archaeological survey 2

    The site of the Meadows’ Wesleyan Cemetery in the Adelaide is thought to contain more than 130 unmarked graves. This site initially had a chapel constructed on it in 1840 and the first burial in 1855.  The initial chapel was replaced by a more substantial stone building in 1856.  Burials continued in this cemetery sporadically until the 1940’s although the site became less ...

  • Archeological surveys case study

    This is a collection of various cases where the 2D resistivity imaging method pioneered by Advanced Geosciences Inc have been successfully applied. Click on a section below and you will be shown a full 2D resistivity imaging brochure detailing the case in question. Acknowledgement: These cases have been submitted by satisfied customers whom we thank for permission to publish ...


    By Advanced Geosciences, Inc.

  • Electromagnetic (EMI) surveys

    EMI (EM-34) surveyDesigned and performed an EM-34 soil conductivity (soil mapping) survey of a 26-acre wood-waste landfill in Omak, Washington.  This soil mapping survey was designed to detect buried drums at a depth of 60 feet and was augmented by a total-field magnetometer survey. While employed with the Arkansas Department of Environmental Quality (ADEQ), performed approximately 40 ...


    By ECA Geophysics

  • MT & Gravity Survey in Delvina, Albania - Case Study

    MT & Gravity Survey In November 2012, SeismoTech s.ltd. was awarded a Gravity and Magnetotelluric survey in the Delvina Area (SW Albania), by Stream Oil & Gas Ltd. The scope of this project was to enrich with additional geophysical information the Delvina Gas field area, in order to conclude on optimum locations for well-drilling. The Delvina Gravity and ...


    By SeismoTech Ltd

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