Application of Advanced Methods for Identification and Detection of Nuclear Explosions from the Asian Continent.

摘要

The underlying theme of the approach to the seismic discrimination problem is the development of deterministic computational models which predict the teleseismic ground motion from earthquakes and nuclear explosions. This theoretical data base is then used to evaluate existing discriminants and to design new discriminants based on expected differences between earthquakes and nuclear explosions in the teleseismic field. For the most part, the computer models required to generate this data base are completed. Equivalent elastic sources from both earthquakes and nuclear explosions are being generated and these sources are then propagated to teleseismic distances. Furthermore, a new discriminant is being evaluated which promises to obviate the requirement for surface wave recording and reduce the magnitude at which discrimination is possible to (m sub b) approximately = 4.0.