ABSTRACT
This chapter summarizes the main concepts and methods employed in seismic verification along with the problems that are encountered, particularly those that are encountered in attempting to detect and identify nuclear tests at very low yield levels. It describes a number of new methods designed to address the particular identification problem. The chapter argues that demonstrate the great difficulties encountered in conducting tests with decoupling. During the last four years since late 1986, the investigations have taken on a new and important expansion in content in that a US-Union of Soviet Socialist Republic scientific program has made new kinds of seismic data available for the direct assessment of verification capabilities in each country. The chapter describes new non-seismic technology and methodology that should be able to provide confident identification to a yield level significantly below 1 kt when combined with current seismic methods.
