geophysics equipment Articles

  • 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

  • Application of high-resolution geophysical methods in submarine pipeline inspection

    High-resolution marine geophysical equipment employed includes single beam echo sounder (SBES), multi-beam echo sounder (MBES), sub-bottom profiler (SBP) and side scan sonar (SSS). By employing SBES, the reflection curve in shallow water reveals the real condition of pipeline; while in deep water, the reflection or diffraction curve can't reveal the real condition. Compared with SBES, MBES is ...


    By Inderscience Publishers

  • Ground-Penetrating Radar (GPR)n WA, ID, SD, WY, AK

    Utilizing state-of-the-art equipment, ECA Geophysics utilizes GPR to assist clients in the following ways: Locate shallow metallic (and nonmetallic) pipes, drums and tanks Utility and rebar locating Locate buried infrastructure and voids ...


    By ECA Geophysics

  • A novel approach for providing potable water in rural Sodwana Bay, northern Kwazulu-Natal, South Africa

    Many people living in the Sodwana area of South Africa do not have access to potable water. Groundwater is the best source of fresh water for the rural community. Potable water in the Zululand coastal plain, Sodwana, South Africa can be enhanced by: (i) providing detailed information on the aquifer system using geophysics; (ii) providing information on groundwater quality and its efficient ...


    By IWA Publishing

  • Non-intrusive site investigation (UXO, CWM concerns)

    BEACON personnel used global positioning system (GPS) equipment to map out site locations. The soil-gas data clearly identified source areas of Trichloroethene (TCE) as well as other compounds of concern. The results showed the location of chlorinated contamination, which correlated well with data from a geophysical survey. While the flux chambers were in the field, more than nine inches of rain ...

  • Geo Drilling International: Hands-On

    Boart Longyear has launched a core-orientation system made for drillers, by drillers Although critical for mapping exploration and minesite development, core orientation is part of the drilling process that has experienced only incremental product improvements through small changes to the process and equipment. Boart Longyear has now introduced TruCore, a first-inindustry integrated ...


    By Boart Longyear Inc.

  • 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 ...

  • Mapping sediment thickness case study

    Polk County, Florida Bathymetric and sub-bottom surveys were conducted within a clay settling pond at a Phosphate mine in Central Florida. Prior to the geophysical survey, a depression or slump had formed along the northern dam of the pond. The purpose of the study was to map various sediment layers within the pond to help determine if the depressions or slumps were related to sinkhole ...


    By GeoView, Inc.

  • Case study -Norfolk County Council tackle groundwater contamination with low-flow

    Geotech low flow groundwater analysis equipment has enabled quick and easy access to samples at 2m intervals down a 28m screen in deep boreholes. Elizabeth Guilford of Norfolk County Council hired the low flow kit from Geotech and used it on a Norfolk CC landfill where leachate contamination of groundwater was suspected. Samples taken at 2m intervals close to elevation of the suspected ...


    By Geotech

  • Norfolk CC tackle groundwater contamination with low-flow

    Quick and easy access in deep wells Geotech low flow groundwater analysis equipment has enabled quick and easy access to samples at 2m intervals down a 28m screen in deep boreholes. Elizabeth Guilford of Norfolk County Council hired the low flow kit from Geotech and used it on a Norfolk CC landfill where leachate contamination of groundwater was suspected. Samples taken at 2m intervals ...


    By Geotech

  • Borehole logging case study

    Corozal, Puerto Rico GeoView was tasked to conduct borehole geophysical logging of at a groundwater extraction well in the rural area of the Municipality of Corozal, Puerto Rico. Prior groundwater tests indicated possible contamination of the groundwater. The study area was primarily underlain by stratified, mostly dark gray basaltic tuff, andesite and basalt porphyry rocks assigned to ...


    By GeoView, Inc.

  • Utility Locating and Mapping at a Power plant case study

    An expansion was planned at a power plant in west central Florida. As part of the design build plan, all of the utilities within the proposed building footprint had to be located and mapped. There were two phases of the investigation. Utility designation was the first phase. This involved studying existing as-builts, performing site walkthroughs with plant personnel in order to ascertain a ...


    By GeoView, Inc.

  • Distributed Thermal-Acoustic Data Integration

    Silixa has developed a technique called Distributed Thermal Acoustics (DTA) to monitor simultaneously the thermal and acoustic profile along a hybrid optical fibre cable in submarine environments. Using its world leading distributed fibre optic technology (ULTIMATM DTS and iDASTM) Silixa deployed an optical fibre cable along the seabed and across the water column in an active gas seepage ...


    By Silixa Ltd

  • Remediation of DNT drum disposal area.

    In 1991, an abandoned drum disposal area was discovered in a small ravine known as the Wash 3 tributary at the Apache Powder Superfund Site near Benson, Arizona. The 110-gallon steel drums were found to have been used to store 2,4- and 2,6-dinitrotoluene (DNT) that was purchased for experimental formulation of a composite explosive for the mining industry in the 1955 to early 1960's timeframe. ...


    By Hargis + Associates Inc

  • Stimulation Data Analysis is Underway

    Another busy field season at Newberry wrapped up at the end of November. The pumps, piping and other equipment has been put in storage and the well is shut in for the winter. Over the next few months we’ll be analyzing the data collected during stimulation and working with the Department of Energy to move forward with the project. The next stage in the Newberry EGS Demonstration project ...


    By AltaRock Energy, Inc.

  • Scanning proposed borehole locations for Utilities case study

    Environmental and engineering firms often are tasked with performing soil borings for monitor well installation as part of a Phase II Environmental Site Assessment. This task becomes more challenging when the borings are to be installed in gasoline stations, right of ways or other areas where there are numerous underground utilities that are either unmarked or not properly located. GeoView can ...


    By GeoView, Inc.

  • S2C2 Inc. utilizes EQuIS, RockWorks and ArcGIS implementing the Triad approach

    When implementing the Triad Approach, S2C2 Inc. (S2C2) relies upon EarthSoft’s EQuIS,ESRI’s ArcGIS and Rockware’s RockWorks software toptimize the management andvisualization of large data sets. The USEPA’s Triad Approach incorporates the following threecomponents: systematic planning, real-time measurements and dynamic work strategies. Theprimary goal of this approach is tstreamline site ...


    By EarthSoft, Inc

  • Risk assessment and brownfields-determining exposure to site contaminants

    The USEPA’s Brownfields Program was developed to facilitate the rehabilitation of contaminated property for re-development. EPA has set forth criteria that must be met for a revitalized property to be used for residential, commercial or industrial purposes. The main thrust of these criteria is the long-term protection of residents or visitors (including shoppers and business employees). As ...

  • Algiz XRW Assists scientists on the Frozen arctic sea - Case Study

    With help from the Algiz XRW portable rugged notebook computer from Handheld Group, two scientists hosted the Arctic Science Field Logistics project from autumn to spring 2013-14, providing researchers from around the world a unique opportunity to collect scientific data in a remote Arctic location. This rugged notebook assisted with recording and storing scientific data, keeping open lines of ...


    By Handheld UK and Ireland Ltd

  • Gravity Method

    Gravity survey - Brett D. Smith thesis area, Colorado School of Mines - 1984Designed and performed multiple-traverse surveys across the geologic boundary between the Eastern Klamath Mountains / Cascade Range provinces. Elevation surveying of gravity stations was performed utilizing non-GPS elevation surveying equipment. All survey "loops" were properly closed and double checked for accuracy ...


    By ECA Geophysics

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