Contact Information

Ronald Green, Ph.D.
(210) 522-5305
rgreen@swri.org

James Prikryl
(210) 522-5667
jprikryl@swri.org

Geophysical Techniques

Image: DC electrical resistivity used to map variations in Near-Surface geologic strata

DC electrical resistivity used to map variations in Near-Surface geologic strata


Image: Magnetics with integrated differential GPS used to map buried volcanic centers, dikes, and faults in Western United States

Magnetics with integrated differential GPS used to map buried volcanic centers, dikes, and faults in Western United States


Image: Transient electromagnetics (TEM) used to detect depth and thickness of geologic and hydrologic units

Transient electromagnetics (TEM) used to detect depth and thickness of geologic and hydrologic units

Cost-effective techniques for rapid, accurate, and comprehensive geophysical mapping of the Earth's subsurface have been developed at Southwest Research Institute (SwRI). These geophysical techniques use:

Each geophysical method targets different properties and specific depths. The geophysical method chosen for a site depends on:

  • Geologic strata
  • Investigation depth
  • Resolution required
  • Anticipated electrical and magnetic contrasts

When integrated, these geophysical methods can offer greater insight into geophysical subsurface characteristics than when used alone.

Related Terminology

electrical resistivity  •  electromagnetics  •  environmental geophysics  •  geophysics  •  gravity  •  ground conductivity  •  ground-penetrating radar  •  induced polarization  •  magnetics  •  Near-Surface geophysics resistivity  •  surface-based geophysics  •  transient electromagnetics

Benefiting government, industry and the public through innovative science and technology
Southwest Research Institute® (SwRI®), headquartered in San Antonio, Texas, is a multidisciplinary, independent, nonprofit, applied engineering and physical sciences research and development organization with 10 technical divisions.

04/15/14