Joint Geological and Geophysical Research Station
| Joint Geological and Geophysical Research Station | |
|---|---|
| Part of United States Atomic Energy Detection System | |
| Schwarz Crescent, Alice Springs, Northern Territory, Australia | |
Detachment 421 marker outside the station (2020) | |
| Site information | |
| Type | Seismic monitoring and nuclear-detonation detection station |
| Code | Station ID ASAR |
| Owner | United States Air Force / Australian Department of Defence |
| Operator | Air Force Technical Applications Center (AFTAC) |
| Controlled by | United States Air Force |
| Open to the public | No |
| Condition | Operational |
| Primary mission | Nuclear detonation detection; regional seismology |
| Location | |
JGGRS Location in the Northern Territory JGGRS JGGRS (Australia) | |
| Coordinates | 23°41′33″S 133°53′0″E / 23.69250°S 133.88333°E |
| Site history | |
| Built | 1955 |
| Built by | United States Air Force and Bureau of Mineral Resources |
| In use | 1955 – present |
| Garrison information | |
| Garrison | Detachment 421, 709th Technical Maintenance Squadron |
The Joint Geological and Geophysical Research Station (JGGRS) is a seismic monitoring and nuclear detonation detection system operated by the United States Air Force (USAF) in cooperation with Australia. Located at the foot of ANZAC Hill in Alice Springs, Northern Territory, it was established in 1955 as part of a global network to identify clandestine underground nuclear explosions. The station is affiliated with the Preparatory Commission for the Comprehensive Nuclear-Test-Ban Treaty Organization (CTBTO) and additionally provides seismic data to support Australian hazard-monitoring programs. It is one of several acknowledged joint U.S.–Australian military intelligence installations.