Geophysical Monitoring Articles

  • Keynote presenter previews NGWA Conference on Hydrogeophysics and Deep Groundwater

    Andrea Croskrey, PG, of the Texas Water Development Board will give the keynote presentation at the NGWA Conference on Hydrogeophysics and Deep Groundwater, March 20-21 in Denver, Colorado. Focusing on the use of geophysics—from remote sensing to borehole applications—for groundwater studies, the conference also ...

  • Methods used to carry out six roadway investigations of sinkholes

    Abstract Karst conditions are a prevalent problem impacting many roads, bridges and highways of the United States. Six case-histories present an overview of investigations made to determine the presence of karst (sinkholes and cavities) and their possible impact on existing or new construction. These six case-histories represent projects which range from reconnaissance investigations to ...


    By Geonics Limited

  • Use of Electromagnetic Induction Tools in salinity assessment/appraisals in eastern Colorado

    Abstract Electromagnetic induction (EMI) is a relatively low-cost and rapid method for measuring, assessing spatially soil salinity. The two studies were conducted to evaluate data obtained with a single-frequency (EM38 meter) and multi-frequency (GEM300 sensor) EMI instruments and to relate apparent conductivity measured by these instruments with the more conventional conductivity of the ...


    By Geonics Limited

  • Geophysical applications to solid waste analysis

    Abstract: Case studies of regional landfills show that electromagnetic geophysical methods can accurately and inexpensively define boundaries and thickness of waste. Degradation of putrescible solid waste generates conductive leachate that can be imaged with a frequency-domain terrain conductivity meter. Terrain conductivity measurements can be modified through a simple algorithm based upon ...


    By Geonics Limited

  • UXO discrimination using time domain electromagnetic induction

    Introduction An explosive ordnance is a munition that is either launched or fired with the intent of detonation at a specified target. An unexploded ordnance (UXO) is an explosive ordnance that, due to some malfunction, remains undetonated. As a result, the ordnance can be found at the ground surface, partially buried, or buried at a depth of up to 8 m beneath the surface. Practical and ...


    By Geonics Limited

  • Using Electromagnetic induction to characterize soils - Case Study

    Electrical conductivity measurements have been used for years to determine salinity and moisture in soils. Probes were inserted directly into the soil to determine how well the soil conducted an applied current. This process was slow and labor-intensive and was usually reserved for scientific studies. A more recent technique for measuring conductivity is electromagnetic induction (EM), a ...


    By Geonics Limited

  • KASTHEW GEOTECH DRILLING SOLUTIONS CO. UGANDA LTD (EAST AFRICA)

    KASTHEW GEOTECH Solutions Co. Uganda Ltd. offers Geophysical and Hydro-geological surveys, Water well drilling, coring and Geotechnical with services (works, Consultation, project supervision and contracting) across the East African Region. KASTHEW GEOTECH WORKS / SERVICES;- 1.    SITE INVESTIGATIONS (Dam sites, Bridges, Roads, Buildings, Quarries, Mines, Windmills, Towers) ...

  • New Geotechnical Tiltmeter with MEMS Technology

    Introducing the 850 MEMS Tuff Tilt Series, the latest addition to Jewell Instruments’ electrolytic tiltmeter line for geophysical & geotechnical applications. This versatile, rugged, weatherproof tiltmeter is a low-cost alternative to most sensors ...


    By Eneco

  • Arctic Polar Research - A Global Responsibility

    Due to climate change and geopolitical trends, the Polar Regions (particularly the Arctic) are increasingly becoming the focus of scientific, political, and economic interests. Much of the global climate is driven by forces that originate in the Arctic. The Arctic sea ice is receding faster than climate models have predicted, and the movement of freshwater into and around the Arctic plays an ...

  • Seismic refraction for weather zone assessment in vibroseismic processing

    Refraction seismic measurements for the determination of the seismic velocities in the shallow subsurface have been performed close to Valence (F) for our partner Partner Gallego Technic Geophysics. 44 profiles with a length of 240m have been acquired in August 2016. Seismic velocities of the shallow geological layers and the bedrock could be determined to a depth of up to 25m. Results from ...


    By Geo2X

  • With fit-for-purpose CMM fixturing we save 50% of the inspection time - Case Study

    Yeovil Precision Castings (YPC) Limited manufactures production quantities of high-quality investment castings in air and vacuum. It supplies to customers in aerospace, medical, power generation, vehicle components, safety equipment, railway and general engineering. To meet its customer demand for more thorough batch sampling, the company has invested in two DCC co-ordinate measuring ...


    By Renishaw plc

  • UncerTZ Consortium - Time to Depth Conversion Evolved

    Near the end of 2015 Geovariances committed itself into building a new, sophisticated tool for Time to Depth conversion in Reservoir Characterization. The challenges petitioned by the consortium partners were not easy. It included features such as: more choices in conversion (and less of a “black box”), uncertainty characterization, inclusion of faults in the conversion procedure, ...


    By Geovariances

  • Case Study - 28 MW Dual-Flash Power Plant

    Brady Hot Springs, Nevada, USA – 1992 GDA was a partial owner in this successful project and was responsible for exploration and development of the resource. As Manager of Wellfield Development, GDA recommended the comprehensive wellfield development plan, formulated the exploration program, supervised surface geological mapping and geophysical surveys for siting production and injection ...

  • 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 ...


    By Advanced Geosciences, Inc.

  • 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

  • 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 ...


    By Advanced Geosciences, Inc.

  • Searching for Archeological Anomalies in the Oluz Mound - Case Study

    The History Of The Oluz Mound The Oluz Mound near Amasya, Turkey, is a very important ancient Turkish settlement with a history stretching back to 4,500 B.C. For archaeologists, this site in Central Turkey is an exciting opportunity to discover not just the area’s history, but the history of the birthplace of civilizations. ...


    By Advanced Geosciences, Inc.

  • Case Study - Pipeline Subsidence

    Looking for sinkholes Pyramid Environmental recently performed a geophysical investigation for the National Park Service at Carlsbad Caverns National Park in Carlsbad, NM. The survey used electrical resistivity mapping (ER) to look for potential underground caves or caverns near an area designated for the construction of an underground utility line. A 2D resistivity survey ...


    By Advanced Geosciences, Inc.

  • 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 ...


    By Advanced Geosciences, Inc.

  • Case Study - Remedial Investigation - Former Vickers Refinery, Potwin, Kansas

    MWH carried out this comprehensive investigation in order to characterize soil, geology, surface water, and groundwater and identify possible source areas and potential contaminant migration pathways. Additionally, this investigation evaluated hydraulic pathways and the interaction between aquifers, evaluate the performance of the recovery wells, and evaluate groundwater and surface water ...


    By EI LLC

Need help finding the right suppliers? Try XPRT Sourcing. Let the XPRTs do the work for you