Simulation of the Detection and Location Capability of Regional Seismic Networks in the Soviet Union
Final rept. 1 Jan 1989-31 Dec 1990
SCIENCE APPLICATIONS INTERNATIONAL CORP SAN DIEGO CA
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The main objective of this two-year project is to assess the treaty monitoring capability of existing and proposed seismic networks in the Soviet Union. We estimate the number of in-country single stations or arrays that are required to monitor nuclear explosion testing to a threshold of 1 kt. This corresponds to an approximate magnitude of 2.5 if the explosion is fully- decoupled. We estimate that 10 internal NORESS-type arrays or 30 internal IRIS- type single stations are required to achieve a 90 detection threshold of ML 2.5 throughout the Soviet Union. However, only 15 in-country single stations are needed to reach this threshold in regions of bedded or domed salt e.g., regions for which full-decoupling is feasible. These estimates are based on detection of 3 phases involving at least 2 stations, which gives location uncertainties or 20 km at the 90 confidence level.
- Government and Political Science