Search SEDIS
| Data sets | Publications | Expeditions | Thesaurus |
radioactiv  |
|---|
| radioactivation analysis | |
|---|---|
| USE | activation analysis |
| radioactive decay | |
|---|---|
| UF | decay, radioactive |
| RT | absolute age |
| isotopes | |
| SN | Before 1978, search decay AND radioactive. |
| radioactive elements | |
|---|---|
| USE | radioactive isotopes |
| radioactive fallout | |
|---|---|
| USE | fallout |
| radioactive materials | |
|---|---|
| SN | Not a valid GeoRef index term after 1968. See isotopes; radioactivity; radioactive tracers; radioactive waste; radioactive isotopes. |
| radioactive minerals | |
|---|---|
| SN | Not a valid GeoRef index term after 1970. See radioactivity; minerals. |
| radioactive tracers | |
|---|---|
| RT | aerosols |
| Chernobyl nuclear accident | |
| ground water | |
| hydrogeology | |
| hydrology | |
| isotopes | |
| radioactivity | |
| surface water | |
| tracers | |
| radioactive waste repositories | |
|---|---|
| SN | Not a valid term for GeoRef. After 1993, see storage or underground storage or radioactive waste, waste disposal, or waste disposal sites. |
| radioactive-waste disposal | |
|---|---|
| SN | Not a valid GeoRef index term after 1970. Used in subfile N. After 1992, use radioactive waste with waste disposal or waste disposal sites. Also see storage or underground storage. |
| radioactivity | |
|---|---|
| RT | alpha rays |
| alpha-ray spectroscopy | |
| autoradiography | |
| beta rays | |
| Chernobyl nuclear accident | |
| cosmic rays | |
| dosimetry | |
| electromagnetic radiation | |
| engineering geology | |
| fallout | |
| fission tracks | |
| gamma rays | |
| gamma-gamma methods | |
| gamma-ray methods | |
| gamma-ray spectroscopy | |
| heat | |
| SN | For natural or induced radioactivity. Before 1972, also search nucleosynthesis. Before 1978, also search radiometric; radiometry. |
| radioactivity exploration | |
|---|---|
| SN | Not a valid GeoRef index term after 1971. Used in subfiles G and N. Now use radioactivity or radioactivity methods. |
| radioactivity logging | |
|---|---|
| SN | Not a valid GeoRef term after 1970. Used in subfile N. Use well-logging and radioactivity. |
| radioactivity methods | |
|---|---|
| BT | geophysical methods |
| .radioactivity methods | |
| RT | geophysical surveys |
| radioactivity | |
| dosimetry | |
| radon emanometry | |
| gamma-ray methods | |
| radioactivity survey maps | |
| liquid scintillation methods | |
| neutron methods | |
| SN | For surveys, search with geophysical surveys and an area. For surveys, also index geophysical surveys and the area. |
| radioactivity survey maps | |
|---|---|
| BT | maps |
| .radioactivity survey maps | |
| RT | geophysical survey maps |
| radioactivity methods | |
| SN | Also search maps AND geophysical surveys AND radioactivity methods with area. Added to Thesaurus in 1985. |