PEnum_GeophysicalSurveyMethod

Natural language names

Constants

Name	Description
REFLECTION_SEISMIC	Using seismic waves reflected from the interface between formations having different physical properties to map geological structures and/or stratigraphic features.
REFRACTION_SEISMIC	Using the refraction of seismic waves on geology layers and rock/soil units to characterize subsurface geologic conditions.
SURFACEWAVE_SEISMIC	Using seismic waves that travel along (or near to) the surface to assess the surface wave velocity in the subsurface.
PASSIVE_SEISMIC	Using listening capabilities only, that is, no seismic energy is added by the investigator.
OTHER_SEISMIC	Any other type of seismic survey method.
ELECTRICAL	Introducing current into the ground and measuring the distribution of the resulting potential in the ground to map electrical properties in the subsurface.
ELECTROMAGNETIC	Detecting the electromagnetic properties of the subsurface by inducing low-frequency electromagnetic fields within the subsurface and measuring the response of earth's materials.
RADAR	Using radar pulses to image the subsurface.
GRAVITY	Measuring variations in the gravitational field of the earth to detect the density changes of subsurface bodies.
MAGNETIC	Measuring variations in the magnetic field of the earth which are related to changes of structures or magnetic susceptibility in the subsurface.
NMR	Measuring magnetic resonance signals from proton-containing fluids (e.g. water, hydrocarbons) in the earth's subsurface.