Geophysics Articles

  • 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

  • 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

  • Case Study - The Oluz Mound Archaeological Site Investigation

    Amasya, Turkey The Oluz Mound is a very important ancient Turkish settlement with a history stretching back 4,500 years BC. Objective To help an on going arcaeological excavations and to show possible structural extensions or new remains on the side by using the Geophysical Electrical Resistivity Tomography (ERT) imaging method. ...


    By Advanced Geosciences, Inc.

  • Case Study - Construction Aggregate: Sand

    Geologic Mapping of Sand Unit Thickness Pyramid was contracted to perform an electrical resistivity survey across 230 acres of undeveloped land in North Carolina. The purpose of the survey was to quantify the lateral extents and approximate depth/thicknesses of sandy soils near the ground surface. The client was interested in the potential of the site to be utilized as a sand mine, and ...


    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.

  • Case Study - Land Slide Investigation

    The landslide occurred on March 30, 2011. The maximum rainfall (53.1 kg/m2) has been seen in this month during a year. There is igneous rock that composed of tuff, andesite, dasite and basalt on the top of metamorphic schist, graphitic schist and serpentine. There are also basalt and limestone blocks. These blocks were split by fault and moved. The landslide body is consisting of schist and ...


    By Advanced Geosciences, Inc.

  • Analyzing and representing Downhole information on a daily basis using ESdat and Encom Discover - Case Study

    GHD used ESdat to optimize data collection and analysis and minimize data handling when working with downhole data information. 3D data output was provided by Encom Discover. Overview GHD is an professional services consultancy – 6000+ staff and offices in Australia, Middle East, Asia & Americas.  GIS used extensively within GHD with a ...

  • Enhanced selectivity and capacity of clinoptilolite for Cd2+ removal from aqueous solutions by incorporation of magnetite nanoparticles and surface modification with cysteine

    In this study, magnetic zeolite (MZ) nanocomposite modified with cysteine was developed in order to enhance selectivity and capacity of clinoptilolite for cadmium ion. The prepared MZ nanocomposite is containing clinoptilolite and magnetite nanoparticles with weight ratio of 3:1. The synthesized nanocomposite was characterized by transmission electron microscopy, X-ray diffraction and ...


    By IWA Publishing

  • Quantitative pipe condition assessment with Pipe Penetrating Radar

    Abstract Pipe Penetrating Radar (PPR) is the underground in-pipe application of GPR, a non-destructive testing method that can detect defects and cavities within and outside mainline diameter (>18 in / 450mm) non-ferrous (reinforced concrete, vitrified clay, PVC, HDPE, etc.) pipes. The key advantage of PPR is the unique ability to map pipe wall thickness and deterioration including voids ...


    By SewerVUE

  • Adsorption of Pb2+ from aqueous solution using spinel ferrite prepared from steel pickling sludge

    In this paper, spinel ferrite with high crystallinity and high saturation magnetization was successfully prepared from steel pickling sludge by adding iron source and precipitator in the hydrothermal condition. The obtained spinel ferrite was characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), vibrating sample magnetometer (VSM), and Zeta potential ...


    By IWA Publishing

  • Removal of cadmium(II) ions from aqueous solution using Ni (15 wt.%)-doped α-Fe2O3 nanocrystals: equilibrium, thermodynamic, and kinetic studies

    The present publication investigates the performance of nanocrystalline Ni (15 wt.%)-doped α-Fe2O3 as an effective nanomaterial for the removal of Cd(II) ions from aqueous solutions. The nanocrystalline Ni-doped α-Fe2O3 powders were prepared by mechanical alloying, and characterized by X-ray diffraction and a ...


    By IWA Publishing

  • Activated charcoal–magnetic nanocomposite for remediation of simulated dye polluted wastewater

    Herein, we report a straightforward way to fabricate activated charcoal–magnetic nanocomposite (AC–MNC) by chemical precipitation for the sequestration of methylene blue (MB) from a simulated solution. The synthesised nanocomposite was characterised by Fourier transform infra-red (FTIR), Brunauer–Emmett–Teller (BET), transmission electron microscope (TEM) and ...


    By IWA Publishing

  • High–quality single–crystal diamond–graphite–diamond membranes and devices

    Implantation of hydrogen ions into synthetic single–crystal diamonds followed by subsequent high–temperature annealing and anodic etching of implanted crystals was used to obtain structurally perfect 30–nm thick diamond membranes with optically active NV− centres (area up to several tens mm²) appropriate for use in integral magnetometers and quantum–informatics optoelectronic ...


    By Inderscience Publishers

  • 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.

  • Preparation and characterization of iron oxide nanoparticles coated with chitosan for removal of Cd(II) and Cr(VI) from aqueous solution

    This study investigated the applicability of magnetite Fe3O4 nanoparticles coated with chitosan (CMNs) for the removal of some toxic heavy metals from simulated wastewater. Magnetic nanomaterials were synthesized using the co-precipitation method and characterized by transmission electron microscope, scanning electron microscope, X-ray diffraction, and Fourier transformer infrared ...


    By IWA Publishing

  • 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.

  • Human factor speeds up glacial melting

    The impact of human activity is melting the glaciers in the world’s mountain regions, and is doing so at an accelerating rate. Ben Marzeion, a climate scientist at the University of Innsbruck’s Institute of Meteorology and Geophysics, Austria, reports with colleagues in the journal ...


    By Climate News Network

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