Geophysical Services
Why Geophysics?
Because regarless of the possible application — engineering, environmental, or archeological — high resolution geophysical methods offer non-invasive methods to help “see what you’ve been missing” in the subsurface. A client calls and needs to find voids under an airport runway ASAP. Or your firm needs to delineate the boundaries of a contaminant plume that is thought to be flowing from a landfill. Or you need to know how deep the bedrock is for your foundation design. In situations like these, the job needs to be done quickly and efficiently. That’s the benefit of geophysics. Geophysical surveys can provide accurate and timely answers to questions with a minimum amount of disturbance to the surface of a site. In essence, geophysics allows you to “see below the surface” without having to excavate large areas or drill an inordinate number of boreholes.
Environmental Geophysics | ||||||||
Objective | GPR | Seismic | Resistivity | Electro- magnetic |
Magnetic | VLF | PUL | Borehole Logging |
Locate underground storage tanks, utilities, and other buried structures | ||||||||
Determine depth of water table | ||||||||
Locate possible contaminant pathways | ||||||||
Map extent of contaminant plume/debris | ||||||||
Characterize bedrock topography, depth, and properties | ||||||||
Engineering Geophysics/Geotechnical Investigations | ||||||||
Objective | GPR | Seismic | Resistivity | Electro- magnetic |
Magnetic | VLF | PUL | Borehole Logging |
Determine subsurface conductivity structure | ||||||||
Determine thickness of concrete of pavement | ||||||||
Characterize bedrock topography, depth, and properties | ||||||||
Detect/locate utilities and voids | ||||||||
Locate bedrock fractures | ||||||||
Archaeological Geophysics | ||||||||
Objective | GPR | Seismic | Resistivity | Electro- magnetic |
Magnetic | VLF | PUL | Borehole Logging |
Locate individual buried objects | ||||||||
Detect subsurface voids | ||||||||
Locate grave sites | ||||||||
Detect/delineate former foundations | ||||||||
Determine location of former ground surfaces | ||||||||
Determine boundaries of former human occupation |