Spotlight Geophysical Services: Resolving Earth's Complexities
About Us
Contact Us


Geophysical methods are applied to a variety of geotechnical and environmental applications.  They are most effectively used at the initial stages of a site characterization effort to guide invasive follow-up and to provide a reconnaissance over large areas.  Geophysical methods are also used to provide very detailed data within a localized area.

Spotlight provides geophysical services for these applications:

  • Karst (sinkhole) investigations
  • Geologic hazard assessments
  • Groundwater resource mapping
  • Foundation and rippability surveys
  • Canal seepage investigations
  • Contaminant mapping
  • Harbor development
  • Subsurface structure locating
  • Water bottom mapping and hazard identification
  • Abandoned mine investigations
  • Power plant siting
  • Highway and infrastructure assessments
  • Soil resistivity measurements
  • Dam safety assessments
  • Coal flyash mapping
Utility mapping, Sinkhole mapping, Sinkhole detection

MASW, Seismic refraction, marine refraction, rippability survey

Application Summaries

Download our PDFs to learn more about these application areas.

Application Description Learn More
Karst Investigations Karst is a term used to describe surface landforms and subsurface features related to the dissolution of soluble rock such as limestone and gypsum.
Marine Geophysics Marine Geophysics describes a broad range of geophysical methods that are applied in marine environments or in lakes, canals, and rivers.
Environmental Assessment Geophysical measurements are an important part of a variety of environmental assessments that range from small Phase I/II investigations to regional contaminant migration mapping.
Geotechnical Measurements Geophysical measurements are used to obtain in-situ values of geotechnical and engineering parameters such as seismic velocity, elastic parameters, and electrical resistivity.
Seismic Site Classifications Geophysical measurements are an effective method to obtain Vs30 values for seismic site classification.
Coal Ash Mapping Geophysical methods can be employed to effectively map the lateral boundaries and thickness of coal ash in ponds and landfills.
Sinkhole survey, Karst consulting, Pre-dredging survey Contaminant mapping, seismic survey,seismic reflection survey, seismic surface waves Canal seepage, Dam geophysics, Dam geophysical, Engineering geophysics, GPR