The level of deterrence provided by data from the SPITS seismometer array to possible violations of the Comprehensive Test Ban in the Novaya Zemlya region
The yield threshold at which a fully decoupled explosion can be identified has been a recurring issue in the debate on whether the Comprehensive Nuclear Test Ban (CTB) can be adequately verified. Here, we assess this yield threshold for the Novaya Zemlya (NZ) and Kola Peninsula regions by analysing...
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fthighwire:oai:open-archive.highwire.org:gji:146/2/425 2023-05-15T15:39:12+02:00 The level of deterrence provided by data from the SPITS seismometer array to possible violations of the Comprehensive Test Ban in the Novaya Zemlya region Bowers, David Marshall, Peter D. Douglas, Alan 2001-08-01 00:00:00.0 text/html http://gji.oxfordjournals.org/cgi/content/short/146/2/425 https://doi.org/10.1046/j.1365-246x.2001.01462.x en eng Oxford University Press http://gji.oxfordjournals.org/cgi/content/short/146/2/425 http://dx.doi.org/10.1046/j.1365-246x.2001.01462.x Copyright (C) 2001, Oxford University Press Articles TEXT 2001 fthighwire https://doi.org/10.1046/j.1365-246x.2001.01462.x 2013-05-27T12:32:55Z The yield threshold at which a fully decoupled explosion can be identified has been a recurring issue in the debate on whether the Comprehensive Nuclear Test Ban (CTB) can be adequately verified. Here, we assess this yield threshold for the Novaya Zemlya (NZ) and Kola Peninsula regions by analysing seismograms from six small body wave magnitude ( m b ≤3.5) seismic disturbances recorded at regional distances (1050<Δ<1300 km) by the seismometer array at Spitsbergen (SPITS). Multiple filter analysis of the seismograms shows clear high-frequency P n ( f ≥14 Hz), except from a calibration explosion on the Kola Peninsula. From four of the disturbances studied we observe clear high-frequency S n the explosion showed no clear high-frequency S n and the data from the remaining disturbance was potentially contaminated by a data glitch. Frequency-domain analysis indicates that the P n and S n attenuation across the Barents Sea is similar to that observed across stable tectonic regions (shields). We define a spectral magnitude for the 2.5–3.5 Hz passband that is tied to teleseismic m b from NZ explosions; the six disturbances considered have 2.3≤ m b ≤3.5. Three-component data are available from SPITS for four of the disturbances considered (including the explosion). From the explosion the S/P ratios on the vertical ( Z ), radial ( R ) and tangential ( T ) components (in the 3.0–6.0 Hz passband) are all less than unity. The S/P ratios for the same passband on the Z component from the remaining three disturbances are less than unity, but the ratios on the R and T components are significantly greater than unity. We argue that S/P ratios (3.0–6.0 Hz passband) of less than unity on all of the Z, R and T components at SPITS may indicate a potential treaty violation in the Kola Peninsula and NZ regions. The temporal variation of seismic noise, in the 3.0–6.0 Hz passband, at SPITS suggests that our three-component S/P criterion will be effective 95 per cent of the time for disturbances with m b ≥2.8. We suggest that m b = ... Text Barents Sea kola peninsula Novaya Zemlya Spitsbergen HighWire Press (Stanford University) Barents Sea Kola Peninsula Geophysical Journal International 146 2 425 438 |
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Articles Bowers, David Marshall, Peter D. Douglas, Alan The level of deterrence provided by data from the SPITS seismometer array to possible violations of the Comprehensive Test Ban in the Novaya Zemlya region |
topic_facet |
Articles |
description |
The yield threshold at which a fully decoupled explosion can be identified has been a recurring issue in the debate on whether the Comprehensive Nuclear Test Ban (CTB) can be adequately verified. Here, we assess this yield threshold for the Novaya Zemlya (NZ) and Kola Peninsula regions by analysing seismograms from six small body wave magnitude ( m b ≤3.5) seismic disturbances recorded at regional distances (1050<Δ<1300 km) by the seismometer array at Spitsbergen (SPITS). Multiple filter analysis of the seismograms shows clear high-frequency P n ( f ≥14 Hz), except from a calibration explosion on the Kola Peninsula. From four of the disturbances studied we observe clear high-frequency S n the explosion showed no clear high-frequency S n and the data from the remaining disturbance was potentially contaminated by a data glitch. Frequency-domain analysis indicates that the P n and S n attenuation across the Barents Sea is similar to that observed across stable tectonic regions (shields). We define a spectral magnitude for the 2.5–3.5 Hz passband that is tied to teleseismic m b from NZ explosions; the six disturbances considered have 2.3≤ m b ≤3.5. Three-component data are available from SPITS for four of the disturbances considered (including the explosion). From the explosion the S/P ratios on the vertical ( Z ), radial ( R ) and tangential ( T ) components (in the 3.0–6.0 Hz passband) are all less than unity. The S/P ratios for the same passband on the Z component from the remaining three disturbances are less than unity, but the ratios on the R and T components are significantly greater than unity. We argue that S/P ratios (3.0–6.0 Hz passband) of less than unity on all of the Z, R and T components at SPITS may indicate a potential treaty violation in the Kola Peninsula and NZ regions. The temporal variation of seismic noise, in the 3.0–6.0 Hz passband, at SPITS suggests that our three-component S/P criterion will be effective 95 per cent of the time for disturbances with m b ≥2.8. We suggest that m b = ... |
format |
Text |
author |
Bowers, David Marshall, Peter D. Douglas, Alan |
author_facet |
Bowers, David Marshall, Peter D. Douglas, Alan |
author_sort |
Bowers, David |
title |
The level of deterrence provided by data from the SPITS seismometer array to possible violations of the Comprehensive Test Ban in the Novaya Zemlya region |
title_short |
The level of deterrence provided by data from the SPITS seismometer array to possible violations of the Comprehensive Test Ban in the Novaya Zemlya region |
title_full |
The level of deterrence provided by data from the SPITS seismometer array to possible violations of the Comprehensive Test Ban in the Novaya Zemlya region |
title_fullStr |
The level of deterrence provided by data from the SPITS seismometer array to possible violations of the Comprehensive Test Ban in the Novaya Zemlya region |
title_full_unstemmed |
The level of deterrence provided by data from the SPITS seismometer array to possible violations of the Comprehensive Test Ban in the Novaya Zemlya region |
title_sort |
level of deterrence provided by data from the spits seismometer array to possible violations of the comprehensive test ban in the novaya zemlya region |
publisher |
Oxford University Press |
publishDate |
2001 |
url |
http://gji.oxfordjournals.org/cgi/content/short/146/2/425 https://doi.org/10.1046/j.1365-246x.2001.01462.x |
geographic |
Barents Sea Kola Peninsula |
geographic_facet |
Barents Sea Kola Peninsula |
genre |
Barents Sea kola peninsula Novaya Zemlya Spitsbergen |
genre_facet |
Barents Sea kola peninsula Novaya Zemlya Spitsbergen |
op_relation |
http://gji.oxfordjournals.org/cgi/content/short/146/2/425 http://dx.doi.org/10.1046/j.1365-246x.2001.01462.x |
op_rights |
Copyright (C) 2001, Oxford University Press |
op_doi |
https://doi.org/10.1046/j.1365-246x.2001.01462.x |
container_title |
Geophysical Journal International |
container_volume |
146 |
container_issue |
2 |
container_start_page |
425 |
op_container_end_page |
438 |
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1766370681988055040 |