Howell, Benjamin F., Jr. Department of Geological Sciences, Pennsylvania State University, University Park, Pennsylvania.
Last reviewed:September 2018
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- Subdivisions of geophysics
- Solid-earth geophysics
- Hydrospheric geophysics
- Planetary science
- Overlapping fields
- Exploration and prospecting
- Related Primary Literature
- Additional Reading
The study of the Earth’s physical properties using the principles and practices of physics. Geophysics is distinguished from geology by its use of instruments to make direct and indirect measurements of the phenomena being studied in contrast to the more direct observations of geology. A few examples of geophysical instrumentation are seismometers, tiltmeters, creepmeters, strainmeters, gravimeters, magnetometers, as well as resistivity meters and other electromagnetic and magnetotelluric instrumentation (see illustration). See also: Earth; Geology; Geoelectricity; Magnetometer; Seismographic instrumentation
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