electromagnetic  search
SNA valid term through 1977.
electromagnetic field  search
UFfield, electromagnetic
RTgeophysical methods
 geophysical surveys
 electrical field
 magnetic field
 magnetotelluric methods
 electromagnetic induction
 potential field
 synchrotron radiation
electromagnetic induction  search
RTelectrical field
 electromagnetic field
 electromagnetic logging
 electromagnetic methods
 magnetic field
SNAlso search induction AND electromagnetic. Added to Thesaurus in 1981.
electromagnetic logging  search
BTwell-logging
 .electromagnetic logging
RTgeophysical methods
 geophysical surveys
 electrical methods
 electromagnetic methods
 electromagnetic induction
 magnetic logging
 SQUID
 transient methods
SNBefore 1978, also search well-logging AND electromagnetic.
electromagnetic methods  search
BTgeophysical methods
 .electromagnetic methods
UFelectromagnetic prospecting
RTimpedance
 geophysical surveys
 Green function
 electrical methods
 crosshole methods
 broad-band spectra
 dipole-dipole methods
 laser methods
 frequency domain analysis
 electromagnetic induction
 electromagnetic logging
 electromagnetic survey maps
 induction
 lida
SNFor surveys, search with geophysical surveys and an area. For surveys, also index geophysical surveys and the area.
electromagnetic prospecting  search
USEelectromagnetic methods
electromagnetic radiation  search
NTultraviolet radiation
RTcosmic rays
 dosimetry
 electromagnetic waves
 emissivity
 gamma rays
 interplanetary space
 luminescence
 magnetic field
 particles
 radio-wave methods
 radioactivity
 solar wind
 synchrotrons
 X-rays
electromagnetic seismographs  search
BTseismographs
 .electromagnetic seismographs
SNAdded to Thesaurus in 1981.
electromagnetic survey maps  search
BTmaps
 .electromagnetic survey maps
RTgeophysical survey maps
 electromagnetic methods
SNAlso search maps AND geophysical surveys AND electromagnetic methods with area. Added to Thesaurus in 1985.
electromagnetic waves  search
RTbackscattering
 Doppler effect
 eikonal equation
 electrical field
 electromagnetic radiation
 magnetic field
 meteorology
 propagation
 radio-wave methods
 waves