24 Seismological methods of monitoring compliance with the comprehensive nuclear test ban treaty

Discrepancies Between Prototype International Data Centre, International Seismological Centre & USGS Seismic Magnitudes

“…This work was and still is done in the context of international efforts at verification of the Comprehensive Nuclear-Test-Ban Treaty (CTBT), which when it was finalized in 1996 determined that the seismic monitoring network of the International Monitoring System (IMS) would consist of 50 primary stations contributing data continuously to an International Data Centre (IDC) in Vienna, plus 120 auxiliary stations that recorded continuously but contributed data to the IDC only on request (Richards, 2002).…”