Search SEDIS
| Data sets | Publications | Expeditions | Thesaurus | 
| air  | |
|---|---|
| RT | air-water interface | 
| atmosphere | |
| background level | |
| Clean Air Act | |
| critical load | |
| pollution | |
| air fields  | |
|---|---|
| USE | airports | 
| air guns  | |
|---|---|
| UF | airguns | 
| RT | instruments | 
| acoustical methods | |
| geophysical methods | |
| seismic methods | |
| SN | Added to Thesaurus in 1985. | 
| air-sea interface  | |
|---|---|
| UF | interface, air-sea | 
| RT | oceanography | 
| aerosols | |
| atmosphere | |
| meteorology | |
| air-water interface | |
| atmospheric transport | |
| boundary interactions | |
| interfaces | |
| air-water interface  | |
|---|---|
| UF | water-air interface | 
| RT | air-sea interface | 
| air | |
| interfaces | |
| water | |
| SN | Use air-sea interface if applicable. | 
| Aira Caldera  | |
|---|---|
| BT | Asia | 
| .Far East | |
| ..Japan | |
| ...Kyushu | |
| ....Kagoshima Japan | |
| .....Aira Caldera | |
| RT | Ontake | 
| Sakura-jima | |
| SN | Kagoshima Prefecture, Kyushu, S Japan. | 
| airborne  | |
|---|---|
| SN | A valid index term through 1977. After 1977, use airborne methods. | 
| airborne methods  | |
|---|---|
| NT | AVHRR | 
| AVIRIS | |
| RT | aeromagnetic maps | 
| aircraft | |
| geophysical methods | |
| geophysical surveys | |
| ground methods | |
| magnetic methods | |
| multispectral scanner | |
| photogeology | |
| remote sensing | |
| SAR | |
| SLAR | |
| thematic mapper | |
| total-field methods | |
| vertical-gradient methods | |
| SN | Before 1978, also search airborne. | 
| Airborne Visible-Infrared Imaging Spectrometer  | |
|---|---|
| USE | AVIRIS | 
| aircraft  | |
|---|---|
| RT | airborne methods | 
| ash clouds | |
| flight | |
| geologic hazards | |
| safety | |
| volcanic risk | |
| SN | For ground facilities, use airports. Also search aviation safety if applicable. | 
| airfields  | |
|---|---|
| USE | airports | 
| airglow  | |
|---|---|
| SN | As of 1981, no longer a valid term. Usually out of scope for GeoRef. Used with ionosphere. | 
| airguns  | |
|---|---|
| USE | air guns | 
| airports  | |
|---|---|
| UF | air fields | 
| airfields | |
| aviation facilities | |
| RT | pollution | 
| engineering geology | |
| environmental geology | |
| land use | |
| military facilities | |
| SN | Indexed with military facilities if applicable. | 
| Airy waves  | |
|---|---|
| BT | elastic waves | 
| .Airy waves | |
| RT | seismology | 
| waves | |
| seismic waves | |
| surface waves | |