What is the role of seismology in monitoring the Comprehensive Test Ban Treaty?
Seismology is one of several fields which plays a role in monitoring the CTBT. Underground nuclear explosions produce seismic waves with unique characteristics which allow the discrimination between explosions and earthquakes.
Learn more: UC Berkeley
A possible explosion of magnitude 5.3 occurred in North Korea on September 9, 2016 at 00:30:01 UTC (9:00 am local time).