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Image NameProcessing & Interpretation

Data analysis and interpretation requires not only a fundamental understanding of the geophysical techniques but also a thorough appreciation of the targets and purpose of the survey. Since the 1970’s WGI and its staff have applied a wide variety of geophysical techniques to site characterization with hydrogeologic, geotechnical or remediation targets.

Below is a table which outlines the technique applicability of WGI's experience with geophysical techniques and targets.
( click to see full table )

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Techniques Targets
Surface:Geologic layeringInfrastructure
Seismic Refraction (P&S wave)HydrostratigraphyTanks
Seismic Reflection (P&S wave)FracturesUXO (land, underwater)
Ground Penetrating RadarKarstGroundwater Plumes
Resistivity ImagingSaltwater IntrusionWells and casings
Terrain ConductivityAquifers / AquitardsPlume monitoring
High Resolotion TDEMArcheologicalDrums
MagneticsFill ThicknessPipes
VLF / VLF-RWater DepthSoil Contamination
Marine SurveysSub bottomLeachate
Borehole:Engineering PropertiesLandfill Limits
High Resolution TemperatureIce WallsLiner Integrity
ConductivityRipabilityUXO Target zones
Acoustic/Optical TeleviewerRebarFoundations
SonicClay ContentForensics
NeutronBuried valleysGraves
DensityWell ConstructionConcrete Condition
CaliperPermafrostConstruction Parameters
VideoDam SitesSeptic Systems
Cross Hole ApplicationsRepository AssessmentSite Comparisons
Technique Applicability
Consistently Frequently Occasionally
Hover over techniques or the targets for applicability using the above key