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The goal of the Contrails project is to help preserve and disseminate the technical record of 20th century aerospace research, highlighting in particular the research endeavors of the Illinois Tech community.

Discriminatory Analysis Applied to Classification of Seismic Phenomena

Report Number: AFOSR-3172
Author(s): Gunther, P.
Corporate Author: Illinois Inst. of Tech. Armour Research Foundation
Date of Publication: 1962-06-30
Pages: 76
Contract: AF 49(638)1066
Original AD Number: AD 458600

Abstract:
This study proposes a mathematical-statistical model for discrimination between earthquakes and nuclear explosions. The initial formulation defines the source parameters relating to geometry of the focus and of the source mechanism, the earth layering and heterogeneity parameters, and the principal types of waves that are propagated. A method of analysis of seismograms is proposed which can extract information from sources not ordinarily used, namely arrival times and amplitudes of secondary body phases. The principal problem areas relating to identification of phases and precision station calibration are discussed in detail. Finally, methods for probabil1ty evaluation of the discrimination procedures are discussed.

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