Seismic methods

Advanced Geophysical Services (AGS) provides non-intrusive subsurface investigation services for environmental, engineering, and construction projects. Formed through the acquisition of Advanced Geological Services by EPI Geophysics, AGS brings over 30 years of experience in geophysical investigations and subsurface characterization, with in-house licensed Professional Geologists and experienced geophysicists. The company supports projects across Pennsylvania, New Jersey, New York, Connecticut, Delaware, Maryland, and beyond.

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borehole geophysicselectrical resistivityGround Penetrating Radarmicrogravityoil tank sweepsubsurface investigationutility locating and mapping

Global Geophysics provides a full range of marine, terrestrial and borehole geophysical services to communities including aggregates and quarry, archaeological investigation, civil engineering, communication, construction, dam construction and safety, geotechnical engineering, groundwater exploration, mining, port and harbor development, power and energy, transportation, tunneling, vessel and aircraft recovery, and waste management. Based in Redmond, WA, USA.

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bathymetryBorehole GPRBorehole LoggingBorehole seismic methodsCoring and SamplingCrosshole Resistivityelectrical resistivityElectromagneticsGravityInduced Polarization ImagingMagnetic MethodMagnetometryMarine Seismic ReflectionMarine Seismic RefractionNewton GradiometerResistivity ImagingSide-Scanning SonarTime Domain ReflectrometryUnderwater Video