geophysics Articles
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The complementarity of H/V and dispersion curves - Case Study
A new paper has been published on the complementarity of the H/V and dispersion curves, with practical insights (Geophysics, Nov. 2016). Write us (support@moho.world) for further ...
By MoHo s.r.l.
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Unexploded ordinance case study
Jacksonville, Florida A geophysical investigation was conducted at a World War II era bombing range in the eastern United States. The site was approximately 2,000 feet by 300 feet in plan dimension. Historical information indicated that MK23 practice bombs, 2.75” rockets, and 100 pound practice bombs were used at the site. The purpose of the geophysical investigation was to determine the ...
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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. It is ...
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Reservoir Monitoring in Delvina, Albania Monitoring - Case Study
Reservoir Monitoring At the end of December 2011, STREAM OIL&GAS Ltd had planned to apply the technique of hydraulic acid fracturing in the Well D-12 of the Delvina block, aiming to increase the well’s natural gas productivity rate. In this context, Seismotech Geophysical Solutions was asked to monitor and analyze the possible microseismic activity on this area, related to the ...
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Passive Seismic Identifies a Meteorite Crater in Western Australia - Case Study
Western Australia An intriguing presentation given by dr. Jayson Meyers (Resource Potential, Perth, Australia) that illustrates how passive seismic and other geophysical methods identify a young meteorite crater in Archaean greenstone of the Coolgardie Goldfield (Western Australia). ...
By MoHo s.r.l.
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Technology Array Enables Linked Surveys above and below the Surface
Consultants at GEL Geophysics LLC, a geophysical and subsurface utility engineering consulting firm based in Charleston, South Carolina, in collaboration with the Ontario, California, office of David Evans and Associates Inc., a professional consulting firm, have combined existing surveying technology to create a system that is far more than a sum of its parts. The innovation is a multi-sensor ...
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Glossary of Typical Oilfield Geophysics Terms
A abnormal events absorbing boundary conditions absorptance absorption absorption band accelerometer acoustic acoustic basement acoustic coupler acoustic ...
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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 was performed along ...
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Geophysical modelling of the Catalan magnetic anomaly: study of the crustal structure of the Gulf of Lion margin - Case Study
As part of a research project (the OROGEN project, carried out jointly with TOTAL and INSU-CNRS), BRGM has drawn on datasets from the French Gravimetric Database and the French Airborne Geophysical Database to study and model the geological structure that causes the Catalan magnetic anomaly. The need One of the main aims of the OROGEN research project is to improve knowledge of the processes ...
By BRGM
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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 ...
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Integrated assessment: rhetoric of models and perceptions of world futures
Integrated assessment of climate change implies the construction of models describing the very complex interactions among economic processes, geochemical or geophysical phenomena and ecological processes at the Earth level. This attempt is unprecedented in the history of science. To build models of a unique, very large and extremely complex object, the whole Earth, supposes the definition of ...
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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 piping apparently left from a previous gas ...
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Technology array enables linked surveys above and below the surface
CONSULTANTS at GEL Geophysics LLC, a geophysical and subsurface utility engineering consulting firm based in Charleston, South Carolina, in collaboration with the Ontario, California, office of David Evans and Associates Inc., a professional consulting firm, have combined existing surveying technology to create a system that is far more than a sum of its parts. The innovation is a multi-sensor ...
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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 ...
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Cole-Cole Inversion of Telluric Cancelled IP Data
SUMMARY: Induced Polarisation, like all geophysical methods, suffers from the presence of noise. Of the many sources of noise, tellurics can often be one of the most problematic to remove. An effective method of removing telluric noise has been trialed on dipole-dipole data acquired by MIM Exploration’s proprietary MIMDAS system, during routine surveying in NE South Australia. The ...
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Technology Array Enables Linked Surveys Above and Below the Surface - Civil Engineering Magazine
CONSULTANTS at GEL Geophysics LLC, a geophysical and subsurface utility engineering consulting firm based in Charleston, South Carolina, in collaboration with the Ontario, California, office of David Evans and Associates Inc., a professional consulting firm, have combined existing surveying technology to create a system that is far more than a sum of its parts. The innovation is a multi-sensor ...
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Governance, socio-economic and geophysical indices for determining water-related disaster risk
Governance, socio-economic and geophysical indicators are indispensable measures of risk for water-related disasters leading to a better disaster risk mitigation and management for sustainable development. Water-related disaster countermeasures are weak in non-OECD (Organisation for Economic Co-operation and Development) countries, thus higher economic losses and younger fatalities are ...
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Residential sinkhole investigation csae study
Hernando County, Florida Geophysical techniques are commonly used as part of geotechnical investigations for sinkhole claims of residential structures. GeoView, Inc. has performed thousands geophysical surveys for residential sinkhole investigations throughout Florida, Tennessee and Georgia. The investigations involve performing ground penetrating radar (GPR) and/or electrical resistivity ...
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Electromagnetic detection of a 410-km-deep melt layer in the southwestern United States.
A deep-seated melt or fluid layer on top of the 410-km-deep seismic discontinuity in Earth’s upper mantle, as proposed in the transition-zone ‘waterfilter’ hypothesis, may have significant bearing on mantle dynamics and chemical differentiation. The geophysical detection of such a layer has, however, proved difficult. Magnetotelluric and geomagnetic depth sounding are geophysical methods ...
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Smart Exploration - new ways of exploring subsurface
Smart Exploration is an ambitious project, funded under the EU’s Horizon2020 Research and Innovation Programme, responding to call for “New solutions for sustainable production of raw materials – New sensitive exploration technologies”. The project’s main objective is “developing cost-effective, environmentally-friendly geophysical solutions for mineral ...
By SkyTEM ApS
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