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Details

Regional Body-Wave Discrimination Research.

DE200515013192

Publication Date	2000
Personal Author	Walter, W. R.; Rodgers, A.; Mayeda, K.; Taylor, S.
Page Count	16
Abstract	Monitoring the world for potential nuclear explosions requires identifying them by their expected seismic signatures and discriminating them from earthquakes and other sources of seismic waves. Large events can often be successfully identified by the Ms:mb discriminant. In order to monitor small events short-period regional waveform data recorded within 2000 km wiIl be needed because of poor signal-to-noise at large distances and/or long-periods. Many studies have shown that short-period regional body wave phases have excellent discrimination power down to very small magnitudes when used at various nuclear tests sites. In order to broaden the application of these regional body wave techniques, we are developing size-, distance- and location-based corrections to apply to the regional data to allow wider data comparison and better discrimination performance. Building on prior work, we are developing a revised Magnitude and Distance Amplitude Correction (MDAC) procedure.
Keywords	Seismic waves Seismic detection Monitoring Seismic data Nuclear explosion detection Seismic signatures Wave propagation Velocity Earthquakes Nuclear explosions Wave forms Identification Amplitude
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Lawrence Livermore National Lab., CA.; Department of Energy, Washington, DC.
Supplemental Notes	Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200525

Regional Body-Wave Discrimination Research.

Regional Body-Wave Discrimination Research.
DE200515013192

Publication Date	2000
Personal Author	Walter, W. R.; Rodgers, A.; Mayeda, K.; Taylor, S.
Page Count	16
Abstract	Monitoring the world for potential nuclear explosions requires identifying them by their expected seismic signatures and discriminating them from earthquakes and other sources of seismic waves. Large events can often be successfully identified by the Ms:mb discriminant. In order to monitor small events short-period regional waveform data recorded within 2000 km wiIl be needed because of poor signal-to-noise at large distances and/or long-periods. Many studies have shown that short-period regional body wave phases have excellent discrimination power down to very small magnitudes when used at various nuclear tests sites. In order to broaden the application of these regional body wave techniques, we are developing size-, distance- and location-based corrections to apply to the regional data to allow wider data comparison and better discrimination performance. Building on prior work, we are developing a revised Magnitude and Distance Amplitude Correction (MDAC) procedure.
Keywords	Seismic waves Seismic detection Monitoring Seismic data Nuclear explosion detection Seismic signatures Wave propagation Velocity Earthquakes Nuclear explosions Wave forms Identification Amplitude
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Lawrence Livermore National Lab., CA.; Department of Energy, Washington, DC.
Supplemental Notes	Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200525