[278-4] Nuclear Comprehensive Test Ban Treaty Monitoring Network, 2023
To monitor compliance with a future treaty the CTBTO is establishing a network of 337 nuclear monitoring sites of which 305 have already been built and certified.
Large and small radiating dots represent the primary and auxiliary seismic monitoring sites, measuring waves traveling through the earth and identifying location, strength and nature of a seismic event. Squares show Infrasound monitoring sites, measuring atmospheric micro-pressure changes; triangles show hydroacoustic sites that monitor the ocean; small circles represent the radionuclide sensors measuring specific radionuclides as the provide evidence of a nuclear explosion.
[278-2] Nuclear Comprehensive Test Ban Treaty Monitoring Network, 2011
Locations of the seismic, hydroacoustic, infrasound, and radionuclide sensing facilities of the Comprehensive Nuclear-Test-Ban Treaty International Monitoring System, as well as The International Data Centre of the CTBTO, located in Vienna. As of 2005 the treaty is not yet in effect, pending ratification of all 44 states listed in Annex 2 of the treaty.
