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Seismic Refraction Services
35 services found
by:Spotlight Geophysical Services based inDoral, FLORIDA (USA)
Seismic refraction is a geophysical method used to determine the seismic compression-wave (P-wave) velocity structure of the subsurface. Seismic P-waves are generated on the surface, propagate through the soil and rock, and are recorded by geophones at known distances from the source. Since P-waves are the fastest portion of the ...
by:GEOSPECTRUM S.C. based inKrakow, POLAND
Refraction tomography bases on the classic seismic refraction studies. Classical refraction gives good results in the ground with relatively low variable structure and layers (which differ significantly in velocities of seismic waves). In contrast, tomography can localize more complex structures where ...
by:GEOSPECTRUM S.C. based inKrakow, POLAND
Refraction technique was the first major geophysical technique used for the exploration or deep oilbearing layers. Currently, it is widely used in detailed studies of shallow ...
by:United Consulting based inNorcross, GEORGIA (US) (USA)
Unexpectedly encountering rock during site development can be very costly to a well-balanced job budget. United Consulting utilizes the seismic refraction technique to assist our clients in avoiding this costly encounter by providing “up-front” information as to where rock and/or partially weathered rock may affect grading ...
by:Spotlight Geophysical Services based inDoral, FLORIDA (USA)
Marine seismic refraction is a method to determine the seismic P-wave velocity structure of the subsurface. The P-wave velocity is related to the hardness of the sub-bottom materials and can be used to map the top-of-rock, determine the dredgeability of sub-bottom materials, and identify anomalous conditions. Seismic P-waves are ...
by:Ninyo & Moore based inSan Diego, CALIFORNIA (USA)
The refraction microtremor (RE/MI) technique utilizes Rayleigh waves. The technique can be employed with traditional seismic refraction to obtain engineering properties and simultaneously ...
by:Ninyo & Moore based inSan Diego, CALIFORNIA (USA)
This method is a variation of the seismic refraction method employing a downhole tri-axial geophone and a surface energy source or a downhole source. The energy propagates from the source to the downhole tri-axial geophone and can be recorded as compression and/or shear waves. This method provides detailed layer velocity information and the data can be used to ...
by:Earth Resources Technology, Inc. (ERT) based inLaurel, MARYLAND (USA)
ERT geophysicists use a variety of geophysical survey and detection technologies for the detection and/or mapping of munitions and explosives of concern (MEC), landfills, subsurface structures, contamination plumes, and archaeological remains. The technologies include ground penetrating radar, seismic refraction, electrical resistivity, magnetic/electromagnetic, ...
by:AQUA DRILLING INC based inSAN JUAN, PUERTO RICO
Our project typically involve construction, grouting, piles, deep foundations, shallow foundations, micropiles, geopiers, vibroflotation, liquefaction, sinkhole, sinkholes, karstic, karstic terrain, mogote, landslide, mogotes, landslides, caves, caverns, electric resistivity, seismic refraction, seismic reflection, tomography, dams, well camera ...
by:Jaca & Sierra Testing Laboratories Psc. based inSan Juan, PUERTO RICO
Deep Auger Borings with soil sampling and testing by Standard Penetration Test (SPT) Earthwork monitoring and fill density testing with nuclear gauges Plate Bearing Tests and CBR Ground Penetrating Radar (GPR) Downhole Seismic Tests Crosshole Seismic Tests Seismic Refraction Resistivity Ground Water Pumping Tests Piezometer ...
by:Nova Geophysical Services (NOVA) based inDouglaston, NEW YORK (USA)
Electomagnetic(EM) Survey 5.Comprehensive Subsurface Utility Location (CSUL) 6. Microgravity Surveying 7. Microseismic Monitoring 8. Seismic Refraction Surveying 9. Time Domain Electromagnetic Surveying (TDEM) 10. Conquest Concrete ...
by:Park Seismic LLC based inShelton, CONNECTICUT (USA)
Park Seismic provides services in data processing and reporting in MASW surveys for various types of projects (wind-turbine, soil, void, bedrock, weak zones, buried boundaries, etc.). For cost-effective and time-efficient purposes, field surveys are usually performed by a local geophysical company with experience in zultichannel seismic surveys ...
by:GeoView, Inc. based inSt. Petersburg, FLORIDA (USA)
GeoView employs three methods for studying the geologic strata and objects buried beneath the seafloor. These include Sub-bottom profiling, Marine Seismic Refraction and Marine Seismic Reflection. GeoView owns and operates an Edgetech sub-bottom profiler. It generates a swept frequency source to produce a high resolution image of the sub-bottom ...
Manufactured by:Geophex, Ltd. based inRaleigh, NORTH CAROLINA (USA)
Geophex has extensive corporate experience conducting gravity, magnetic, electrical, electromagnetic, seismic reflection and refraction, and GPR surveys. Geophysical investigations can often reduce remediation costs by avoiding unnecessary intrusive activity. We also fly airborne geophysical surveys using electromagnetic, magnetic, and other sensors. ...
by:Clear Stone Geo (CSG) based inSpokane, WASHINGTON (USA)
Geophysics can be a powerful non-destructive tool in gaining valuable subsurface insight. With over a decade of experience Clear Stone Geo excels in several geophysical method and ...
by:Geotec Engineering & Environmental Geophysics Ltd based inrishon letzion, ISRAEL
A seismic survey is based on an energy source that excites seismic (elastic) waves in the subsurface. The seismic waves propagate in the subsurface and are reflected or refracted in the interfaces between mediums, having a different seismic velocity. The reflected and refracted waves are recorded ...
by:ClearView Geophysics Inc. based inBrampton, ONTARIO (CANADA)
ClearView Geophysics Inc. offers geophysical consulting and surveys as part of your geotechnical investigations. Geophysical surveys are routinely used for geotechnical investigations. Various methods and instruments are used for locating and describing subsurface features and structures that will impact construction designs. Geophysical techniques can be used for: void detection, crane pad ...
by:GeoSoils Inc. based inCarlsbad, CALIFORNIA (USA)
GSI provides geologic studies both as part of engineering projects and as individual geologic projects. These studies include assessments of geologic hazards such as landsliding, fissuring, faulting, excavation characteristics of rock units, hydrogeotogy, and geologic characteristics of subsurface conditions, including downslope soil creep and ...
by:Converse Consultants based inMonrovia, CALIFORNIA (USA)
Most construction projects require a geotechnical study, commonly referred to as a “soils report”. The purpose of the study is to identify the geological features and hazards of the site and to determine the engineering properties of the earth materials. A geotechnical study begins with a review of geological maps and reports to determine the geological setting of the site and to ...
by:ECS Corporate Services, LLC based inChantilly, VIRGINIA (USA)
ECS develops geotechnical exploration programs in support of each client’s project. We know that what’s below the surface can be as crucial and complex as the structure it supports. Our team approach to geotechnical engineering extends beyond simply providing engineering data. We educate our clients about the risks and benefits of the engineering recommendations we ...