The International Monitoring System

The CTBTO network:

The Infrasound Network:

The CTBTO uses infrasound stations to monitor the Earth mainly for atmospheric explosions.

The Radionuclide Network:

The CTBTO uses radionuclide monitoring to detect radioactive particles and noble gases (ie xenon) in the atmosphere.

The Hydroacoustic Network:

The Seismic Network:

CTBTO Tracks Fukushima’s Radioactive Release: