enow.com Web Search

Search results

  1. Results from the WOW.Com Content Network
  2. Exploration geophysics - Wikipedia

    en.wikipedia.org/wiki/Exploration_geophysics

    Exploration geophysics is also used to map the subsurface structure of a region, to elucidate the underlying structures, to recognize spatial distribution of rock units, and to detect structures such as faults, folds and intrusive rocks. This is an indirect method for assessing the likelihood of ore deposits or hydrocarbon accumulations.

  3. Magnetotellurics - Wikipedia

    en.wikipedia.org/wiki/Magnetotellurics

    Magnetotellurics (MT) is an electromagnetic geophysical method for inferring the earth's subsurface electrical conductivity from measurements of natural geomagnetic and geoelectric field variation at the Earth's surface.

  4. Ground-penetrating radar - Wikipedia

    en.wikipedia.org/wiki/Ground-penetrating_radar

    Ground-penetrating radar (GPR) is a geophysical method that uses radar pulses to image the subsurface. It is a non-intrusive method of surveying the sub-surface to investigate underground utilities such as concrete, asphalt, metals, pipes, cables or masonry. [1] This nondestructive method uses electromagnetic radiation in the microwave band ...

  5. Geotechnical investigation - Wikipedia

    en.wikipedia.org/wiki/Geotechnical_investigation

    Surface exploration can include geologic mapping, geophysical methods, and photogrammetry, or it can be as simple as a geotechnical professional walking around on the site to observe the physical conditions at the site. To obtain information about the soil conditions below the surface, some form of subsurface exploration is required.

  6. Near-surface geophysics - Wikipedia

    en.wikipedia.org/wiki/Near-surface_geophysics

    Near-surface geophysics is the use of geophysical methods to investigate small-scale features in the shallow (tens of meters) subsurface. [1] It is closely related to applied geophysics or exploration geophysics. Methods used include seismic refraction and reflection, gravity, magnetic, electric, and

  7. Electrical resistivity tomography - Wikipedia

    en.wikipedia.org/wiki/Electrical_resistivity...

    A related geophysical method, induced polarization (or spectral induced polarization), measures the transient response and aims to determine the subsurface chargeability properties. Electrical resistivity measurements can be used for identification and quantification of depth of groundwater, detection of clays, and measurement of groundwater ...

  8. Reflection seismology - Wikipedia

    en.wikipedia.org/wiki/Reflection_seismology

    Reflection seismology (or seismic reflection) is a method of exploration geophysics that uses the principles of seismology to estimate the properties of the Earth's subsurface from reflected seismic waves. The method requires a controlled seismic source of energy, such as dynamite or Tovex blast, a specialized air gun or a seismic

  9. Geophysical imaging - Wikipedia

    en.wikipedia.org/wiki/Geophysical_imaging

    Geophysical imaging (also known as geophysical tomography) is a minimally destructive geophysical technique that investigates the subsurface of a terrestrial planet. [ 2 ] [ 3 ] Geophysical imaging is a noninvasive imaging technique with a high parametrical and spatio- temporal resolution . [ 4 ]