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What is the Comprehensive Test Ban Treaty (CTBT), and what is the role of seismology in monitoring it?

On September 10, 1996, the United Nations General Assembly voted 158-3 to approve a treaty prohibiting all nuclear tests. The Comprehensive Test Ban Treaty has been signed by 130 nations - including the United States. President Clinton signed the agreement on September 24, 1996.

Seismology is one of several fields which plays a role in monitoring the Comprehensive Test Ban Treaty. Underground nuclear explosions produce seismic waves with unique characteristics which allow the discrimination between explosions and earthquakes.

Learn more: UC Berkeley: Automated Moment Tensor Software for Monitoring the Comprehensive Test Ban Treaty

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