Source Specific Station Corrections (SSSCS) for International Monitoring System (IMS) Seismic Stations in North Africa, Middle East and Western Asia
To date, IDC regional travel time corrections have been successfully implemented for Fennoscandia and North America. Corrections and associated modeling errors to Pn, Pg, Sn, and Lg IASPEI91 travel time tables are specified on 1 by 1 degree latitude and longitude "source specific" grids wi...
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ftdtic:ADA529907 2023-05-15T16:11:57+02:00 Source Specific Station Corrections (SSSCS) for International Monitoring System (IMS) Seismic Stations in North Africa, Middle East and Western Asia McLaughlin, Keith North, Robert Bondar, Istvan Israelsson, Hans Yang, Xiaoping Kirichenko, Victor Kraev, Yury SCIENCE APPLICATIONS INTERNATIONAL CORP (SAIC) ARLINGTON VA 2000-09 text/html http://www.dtic.mil/docs/citations/ADA529907 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA529907 en eng http://www.dtic.mil/docs/citations/ADA529907 Approved for public release; distribution is unlimited. DTIC Seismology Numerical Mathematics Computer Programming and Software Seismic Detection and Detectors *SEISMOLOGICAL STATIONS *SEISMIC DATA *CORRECTIONS DATA ACQUISITION FAR EAST NORTH AFRICA EARTH MANTLE SURFACE TRUTH MIDDLE EAST SYMPOSIA SOURCES ASIA SSSC(SOURCE SPECIFIC STATION CORRECTIONS) IMS(INTERNATIONAL MONITORING SYSTEM) FENNOSCANDIA WESTERN ASIA IDC(INTERNATIONAL DATA CENTER) REB(REVIEWED EVENT BULLETINS) GT(GROUND TRUTH) Text 2000 ftdtic 2016-02-23T03:44:36Z To date, IDC regional travel time corrections have been successfully implemented for Fennoscandia and North America. Corrections and associated modeling errors to Pn, Pg, Sn, and Lg IASPEI91 travel time tables are specified on 1 by 1 degree latitude and longitude "source specific" grids within 20 degrees of each International Monitoring System (IMS) station. International Data Center (IDC) location software is configured to read and apply these grids when locating events in the Reviewed Event Bulletin (REB). In order to develop regional travel time corrections for IMS stations in North Africa, Middle East, and Western Asia, a consortium was formed of experts in IDC software integration/testing/validation, regional/global body/surface-wave tomography, tectonic regionalization, 3D ray-tracing, and ground truth (GT) data collection with the goal to improve location accuracy and precision while maintaining honest 90% coverage ellipses. The three-year R&D program will provide Source Specific Station Corrections (SSSCs) for all IMS primary and auxiliary seismic stations in the region. Corrections will be developed, tested, and validated in two phases. A preliminary set of SSSCs will be delivered and tested by late 2001. A refined set of SSSCs will be delivered and tested by early 2003. The preliminary set will develop corrections for surface sources only based on an initial preliminary regionalization and set of crustal and upper mantle models. The 3D model will be based on a hierarchy of global 3D models, regional models, and tectonic regionalization. Travel times will be computed by 3D ray tracing from each station to a grid of source locations. Modeling errors for the initial correction set may be conservatively large. Meanwhile, a concerted effort has begun to gather ground truth (GT) location data in the region for validation. All GT origins, GT arrivals, velocity models, regionalizations, SSSCs, and metadata will be delivered for testing and validation. Proceedings of the Annual DoD/DOE Seismic Research Symposium (22nd): Planning for Verification of and Compliance with the Comprehensive Nuclear-Test-Ban Treaty (CTBT) held in New Orleans, Louisiana on 13-15 September 2000. U.S. Government or Federal Rights. The original document contains color images. Text Fennoscandia Defense Technical Information Center: DTIC Technical Reports database Orleans ENVELOPE(-60.667,-60.667,-63.950,-63.950) |
institution |
Open Polar |
collection |
Defense Technical Information Center: DTIC Technical Reports database |
op_collection_id |
ftdtic |
language |
English |
topic |
Seismology Numerical Mathematics Computer Programming and Software Seismic Detection and Detectors *SEISMOLOGICAL STATIONS *SEISMIC DATA *CORRECTIONS DATA ACQUISITION FAR EAST NORTH AFRICA EARTH MANTLE SURFACE TRUTH MIDDLE EAST SYMPOSIA SOURCES ASIA SSSC(SOURCE SPECIFIC STATION CORRECTIONS) IMS(INTERNATIONAL MONITORING SYSTEM) FENNOSCANDIA WESTERN ASIA IDC(INTERNATIONAL DATA CENTER) REB(REVIEWED EVENT BULLETINS) GT(GROUND TRUTH) |
spellingShingle |
Seismology Numerical Mathematics Computer Programming and Software Seismic Detection and Detectors *SEISMOLOGICAL STATIONS *SEISMIC DATA *CORRECTIONS DATA ACQUISITION FAR EAST NORTH AFRICA EARTH MANTLE SURFACE TRUTH MIDDLE EAST SYMPOSIA SOURCES ASIA SSSC(SOURCE SPECIFIC STATION CORRECTIONS) IMS(INTERNATIONAL MONITORING SYSTEM) FENNOSCANDIA WESTERN ASIA IDC(INTERNATIONAL DATA CENTER) REB(REVIEWED EVENT BULLETINS) GT(GROUND TRUTH) McLaughlin, Keith North, Robert Bondar, Istvan Israelsson, Hans Yang, Xiaoping Kirichenko, Victor Kraev, Yury Source Specific Station Corrections (SSSCS) for International Monitoring System (IMS) Seismic Stations in North Africa, Middle East and Western Asia |
topic_facet |
Seismology Numerical Mathematics Computer Programming and Software Seismic Detection and Detectors *SEISMOLOGICAL STATIONS *SEISMIC DATA *CORRECTIONS DATA ACQUISITION FAR EAST NORTH AFRICA EARTH MANTLE SURFACE TRUTH MIDDLE EAST SYMPOSIA SOURCES ASIA SSSC(SOURCE SPECIFIC STATION CORRECTIONS) IMS(INTERNATIONAL MONITORING SYSTEM) FENNOSCANDIA WESTERN ASIA IDC(INTERNATIONAL DATA CENTER) REB(REVIEWED EVENT BULLETINS) GT(GROUND TRUTH) |
description |
To date, IDC regional travel time corrections have been successfully implemented for Fennoscandia and North America. Corrections and associated modeling errors to Pn, Pg, Sn, and Lg IASPEI91 travel time tables are specified on 1 by 1 degree latitude and longitude "source specific" grids within 20 degrees of each International Monitoring System (IMS) station. International Data Center (IDC) location software is configured to read and apply these grids when locating events in the Reviewed Event Bulletin (REB). In order to develop regional travel time corrections for IMS stations in North Africa, Middle East, and Western Asia, a consortium was formed of experts in IDC software integration/testing/validation, regional/global body/surface-wave tomography, tectonic regionalization, 3D ray-tracing, and ground truth (GT) data collection with the goal to improve location accuracy and precision while maintaining honest 90% coverage ellipses. The three-year R&D program will provide Source Specific Station Corrections (SSSCs) for all IMS primary and auxiliary seismic stations in the region. Corrections will be developed, tested, and validated in two phases. A preliminary set of SSSCs will be delivered and tested by late 2001. A refined set of SSSCs will be delivered and tested by early 2003. The preliminary set will develop corrections for surface sources only based on an initial preliminary regionalization and set of crustal and upper mantle models. The 3D model will be based on a hierarchy of global 3D models, regional models, and tectonic regionalization. Travel times will be computed by 3D ray tracing from each station to a grid of source locations. Modeling errors for the initial correction set may be conservatively large. Meanwhile, a concerted effort has begun to gather ground truth (GT) location data in the region for validation. All GT origins, GT arrivals, velocity models, regionalizations, SSSCs, and metadata will be delivered for testing and validation. Proceedings of the Annual DoD/DOE Seismic Research Symposium (22nd): Planning for Verification of and Compliance with the Comprehensive Nuclear-Test-Ban Treaty (CTBT) held in New Orleans, Louisiana on 13-15 September 2000. U.S. Government or Federal Rights. The original document contains color images. |
author2 |
SCIENCE APPLICATIONS INTERNATIONAL CORP (SAIC) ARLINGTON VA |
format |
Text |
author |
McLaughlin, Keith North, Robert Bondar, Istvan Israelsson, Hans Yang, Xiaoping Kirichenko, Victor Kraev, Yury |
author_facet |
McLaughlin, Keith North, Robert Bondar, Istvan Israelsson, Hans Yang, Xiaoping Kirichenko, Victor Kraev, Yury |
author_sort |
McLaughlin, Keith |
title |
Source Specific Station Corrections (SSSCS) for International Monitoring System (IMS) Seismic Stations in North Africa, Middle East and Western Asia |
title_short |
Source Specific Station Corrections (SSSCS) for International Monitoring System (IMS) Seismic Stations in North Africa, Middle East and Western Asia |
title_full |
Source Specific Station Corrections (SSSCS) for International Monitoring System (IMS) Seismic Stations in North Africa, Middle East and Western Asia |
title_fullStr |
Source Specific Station Corrections (SSSCS) for International Monitoring System (IMS) Seismic Stations in North Africa, Middle East and Western Asia |
title_full_unstemmed |
Source Specific Station Corrections (SSSCS) for International Monitoring System (IMS) Seismic Stations in North Africa, Middle East and Western Asia |
title_sort |
source specific station corrections (ssscs) for international monitoring system (ims) seismic stations in north africa, middle east and western asia |
publishDate |
2000 |
url |
http://www.dtic.mil/docs/citations/ADA529907 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA529907 |
long_lat |
ENVELOPE(-60.667,-60.667,-63.950,-63.950) |
geographic |
Orleans |
geographic_facet |
Orleans |
genre |
Fennoscandia |
genre_facet |
Fennoscandia |
op_source |
DTIC |
op_relation |
http://www.dtic.mil/docs/citations/ADA529907 |
op_rights |
Approved for public release; distribution is unlimited. |
_version_ |
1765997158980386816 |