Global Network Tracks Nuclear Activity in Iran, But No Nuclear Test Detected

The International Monitoring System (IMS) is a global network of over 300 monitoring facilities that uses seismic, infrasound, hydroacoustic, and radionuclide technologies to detect nuclear explosions anywhere in the world. In this case, 25 of our seismic stations picked up two seismic events on October 5 in the Semnan province of northern Iran. Our team in Vienna then analysed data and found that these events were consistent with previous earthquakes in the region, in 2015 and 2018. Using this data, our analysts can distinguish natural events from possible nuclear test explosions, and we share this reliable, verified data with all our member-states. This contributes to countering the spread of misinformation.