Accession Number:

ADA235950

Title:

Simulation of the Detection and Location Capability of Regional Seismic Networks in the Soviet Union

Descriptive Note:

Final rept. 1 Jan 1989-31 Dec 1990

Corporate Author:

SCIENCE APPLICATIONS INTERNATIONAL CORP SAN DIEGO CA

Personal Author(s):

• Sereno, Jr, Thomas J.

Report Date:

1991-03-01

Pagination or Media Count:

131.0

Abstract:

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.

Descriptors:

• *USSR
• *DETECTION
• *SEISMOLOGICAL STATIONS
• STATIONS
• NETWORKS
• NUCLEAR EXPLOSION TESTING
• TREATIES
• EXPLOSIONS
• MONITORING
• SIMULATION

Subject Categories:

• Government and Political Science
• Seismology

Distribution Statement:

APPROVED FOR PUBLIC RELEASE