Accession Number : ADA258936
Title : Evaluation of Regional Seismic Discriminants Using the Intelligent Seismic Event Identification System.
Descriptive Note : Semi-annual rept.,
Corporate Author : ENSCO INC SPRINGFIELD VA
Personal Author(s) : Baumgardt, Douglas ; Carney, Jeanne ; Maxson, Michael ; Carter, Sam
Report Date : 23 Oct 1992
Pagination or Media Count : 103
Abstract : In this study, the effectiveness of several regional waveform discriminants and processing methods are being evaluated using a large database of regional waveforms. ISEIS has been installed at the Center for Seismic Studies (CSS) where it is being used to process and analyze discriminants for seismic events formed by the Intelligent Monitoring System (IMS). The system has undergone a number of modifications to interface with the CSS databases and to improve the processing efficiency of the system in the CSS environment. Also, a number of new features have been added to facilitate the processing of the data and discrimination research, including automated feature extraction and processing, improved plotting displays for reviewing IMS and analyst phase identification, data viewing displays for reference events plotted in scatterplots, a new top-level display for viewing ISEIS processing results, multichannel coherence and deconvolution processing interfaces, and a research interface for multivariate classification using a simulated neural network approach.
Descriptors : *EXPLOSIONS , *NUCLEAR EXPLOSION DETECTION , *EARTHQUAKES , *SEISMIC SIGNATURES , DATA BASES , FREQUENCY , NUCLEAR EXPLOSIONS , HIGH FREQUENCY , NEURAL NETS , MONITORING , ARRAYS , SEISMIC DETECTION , MULTICHANNEL , SEISMIC ARRAYS , PLOTTING , DISCRIMINATION , IDENTIFICATION SYSTEMS , IDENTIFICATION , EFFICIENCY , NETWORKS , INTERFACES , MODIFICATION , PROCESSING , WAVEFORMS , COHERENCE
Subject Categories : Seismology
Distribution Statement : APPROVED FOR PUBLIC RELEASE