Continuous Seismic Threshold Monitoring
Continuous threshold monitoring is a technique for using a seismic network to monitor a geographical area continuously in time. The method provides, at a given confidence level, a continuous assessment of the upper magnitude limit of possible seismic events that might have occurred in the target are...
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ftdtic:ADA256665 2023-05-15T15:11:14+02:00 Continuous Seismic Threshold Monitoring Ringdal, Frode Kvaerna, Tormod ROYAL NORWEGIAN COUNCIL FOR SCIENTIFIC AND INDUSTRIAL RESEARCH KJELLER 1992-05-31 text/html http://www.dtic.mil/docs/citations/ADA256665 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA256665 en eng http://www.dtic.mil/docs/citations/ADA256665 Approved for public release; distribution is unlimited. DTIC AND NTIS Seismology Nuclear Weapons *NUCLEAR EXPLOSION DETECTION *EARTHQUAKES *SEISMOLOGY FREQUENCY USSR NUCLEAR EXPLOSIONS DETECTION MONITORING NETWORKS EXPLOSIONS SEISMOLOGICAL STATIONS FINLAND SEISMIC ARRAYS NORWAY UNDERGROUND EXPLOSIONS SEISMIC DETECTION EXPLOSION EFFECTS SEISMIC DATA SIGNALS ATTENUATION FILTERS SEISMIC MONITORING REGIONAL ARRAYS SEISMIC MAGNITUDES NETWORK CAPABILITY THRESHOLD MONITORING NORESS(NORWEGIAN EXPERIMENTAL SMALL SUBARRAY) NOVAYA ZEMLYA ARCESS(ARCTIC EXPERIMENTAL SMALL SUBARRAY) FINESA(FINNISH EXPERIMENT SEISMIC ARRAY) SBI1 FISCAL YEAR 1992 PE62714E WUPL9A10DABH Text 1992 ftdtic 2016-02-22T12:18:16Z Continuous threshold monitoring is a technique for using a seismic network to monitor a geographical area continuously in time. The method provides, at a given confidence level, a continuous assessment of the upper magnitude limit of possible seismic events that might have occurred in the target area. Two approaches are presented. Site-specific monitoring: By focusing a seismic network on a specific target site, continuous threshold monitoring of that site is achieved. We optimize the monitoring capability by tuning the frequency filters and array beams to known characteristics from previous recorded events at the site. We define the threshold trace for the network as the continuous time trace of computed upper magnitude limits of seismic events in the target area at a 90% confidence level. Regional threshold monitoring: This involves conducting site-specific monitoring of a dense grid of geographical aiming points and requires the development of generic phase attenuation relationships for covering an extended geographical region. The study concludes that continuous threshold monitoring offers a valuable supplement to traditional seismic techniques used in nuclear test ban monitoring. The method may also be useful for monitoring earthquake activity at low magnitudes for sites of special interest, as well as for monitoring earthquake aftershock sequences. Text Arctic Novaya Zemlya Defense Technical Information Center: DTIC Technical Reports database Arctic Norway |
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Open Polar |
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Defense Technical Information Center: DTIC Technical Reports database |
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ftdtic |
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English |
topic |
Seismology Nuclear Weapons *NUCLEAR EXPLOSION DETECTION *EARTHQUAKES *SEISMOLOGY FREQUENCY USSR NUCLEAR EXPLOSIONS DETECTION MONITORING NETWORKS EXPLOSIONS SEISMOLOGICAL STATIONS FINLAND SEISMIC ARRAYS NORWAY UNDERGROUND EXPLOSIONS SEISMIC DETECTION EXPLOSION EFFECTS SEISMIC DATA SIGNALS ATTENUATION FILTERS SEISMIC MONITORING REGIONAL ARRAYS SEISMIC MAGNITUDES NETWORK CAPABILITY THRESHOLD MONITORING NORESS(NORWEGIAN EXPERIMENTAL SMALL SUBARRAY) NOVAYA ZEMLYA ARCESS(ARCTIC EXPERIMENTAL SMALL SUBARRAY) FINESA(FINNISH EXPERIMENT SEISMIC ARRAY) SBI1 FISCAL YEAR 1992 PE62714E WUPL9A10DABH |
spellingShingle |
Seismology Nuclear Weapons *NUCLEAR EXPLOSION DETECTION *EARTHQUAKES *SEISMOLOGY FREQUENCY USSR NUCLEAR EXPLOSIONS DETECTION MONITORING NETWORKS EXPLOSIONS SEISMOLOGICAL STATIONS FINLAND SEISMIC ARRAYS NORWAY UNDERGROUND EXPLOSIONS SEISMIC DETECTION EXPLOSION EFFECTS SEISMIC DATA SIGNALS ATTENUATION FILTERS SEISMIC MONITORING REGIONAL ARRAYS SEISMIC MAGNITUDES NETWORK CAPABILITY THRESHOLD MONITORING NORESS(NORWEGIAN EXPERIMENTAL SMALL SUBARRAY) NOVAYA ZEMLYA ARCESS(ARCTIC EXPERIMENTAL SMALL SUBARRAY) FINESA(FINNISH EXPERIMENT SEISMIC ARRAY) SBI1 FISCAL YEAR 1992 PE62714E WUPL9A10DABH Ringdal, Frode Kvaerna, Tormod Continuous Seismic Threshold Monitoring |
topic_facet |
Seismology Nuclear Weapons *NUCLEAR EXPLOSION DETECTION *EARTHQUAKES *SEISMOLOGY FREQUENCY USSR NUCLEAR EXPLOSIONS DETECTION MONITORING NETWORKS EXPLOSIONS SEISMOLOGICAL STATIONS FINLAND SEISMIC ARRAYS NORWAY UNDERGROUND EXPLOSIONS SEISMIC DETECTION EXPLOSION EFFECTS SEISMIC DATA SIGNALS ATTENUATION FILTERS SEISMIC MONITORING REGIONAL ARRAYS SEISMIC MAGNITUDES NETWORK CAPABILITY THRESHOLD MONITORING NORESS(NORWEGIAN EXPERIMENTAL SMALL SUBARRAY) NOVAYA ZEMLYA ARCESS(ARCTIC EXPERIMENTAL SMALL SUBARRAY) FINESA(FINNISH EXPERIMENT SEISMIC ARRAY) SBI1 FISCAL YEAR 1992 PE62714E WUPL9A10DABH |
description |
Continuous threshold monitoring is a technique for using a seismic network to monitor a geographical area continuously in time. The method provides, at a given confidence level, a continuous assessment of the upper magnitude limit of possible seismic events that might have occurred in the target area. Two approaches are presented. Site-specific monitoring: By focusing a seismic network on a specific target site, continuous threshold monitoring of that site is achieved. We optimize the monitoring capability by tuning the frequency filters and array beams to known characteristics from previous recorded events at the site. We define the threshold trace for the network as the continuous time trace of computed upper magnitude limits of seismic events in the target area at a 90% confidence level. Regional threshold monitoring: This involves conducting site-specific monitoring of a dense grid of geographical aiming points and requires the development of generic phase attenuation relationships for covering an extended geographical region. The study concludes that continuous threshold monitoring offers a valuable supplement to traditional seismic techniques used in nuclear test ban monitoring. The method may also be useful for monitoring earthquake activity at low magnitudes for sites of special interest, as well as for monitoring earthquake aftershock sequences. |
author2 |
ROYAL NORWEGIAN COUNCIL FOR SCIENTIFIC AND INDUSTRIAL RESEARCH KJELLER |
format |
Text |
author |
Ringdal, Frode Kvaerna, Tormod |
author_facet |
Ringdal, Frode Kvaerna, Tormod |
author_sort |
Ringdal, Frode |
title |
Continuous Seismic Threshold Monitoring |
title_short |
Continuous Seismic Threshold Monitoring |
title_full |
Continuous Seismic Threshold Monitoring |
title_fullStr |
Continuous Seismic Threshold Monitoring |
title_full_unstemmed |
Continuous Seismic Threshold Monitoring |
title_sort |
continuous seismic threshold monitoring |
publishDate |
1992 |
url |
http://www.dtic.mil/docs/citations/ADA256665 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA256665 |
geographic |
Arctic Norway |
geographic_facet |
Arctic Norway |
genre |
Arctic Novaya Zemlya |
genre_facet |
Arctic Novaya Zemlya |
op_source |
DTIC AND NTIS |
op_relation |
http://www.dtic.mil/docs/citations/ADA256665 |
op_rights |
Approved for public release; distribution is unlimited. |
_version_ |
1766342126893793280 |