Attenuation of Regional Phases in Fennoscandia and Estimates of Arrival Time and Azimuth Uncertainty Using Data Recorded by Regional Arrays
The primary objective of this project is to simulate the detection and location capability of seismic networks that include regional stations and arrays in and around the Soviet Union. This report summarizes several studies of important issues for normalizing these simulations. Initial application i...
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ftdtic:ADA230163 2023-05-15T16:12:12+02:00 Attenuation of Regional Phases in Fennoscandia and Estimates of Arrival Time and Azimuth Uncertainty Using Data Recorded by Regional Arrays Sereno, Jr, Thomas J. SCIENCE APPLICATIONS INTERNATIONAL CORP SAN DIEGO CA 1990-09 text/html http://www.dtic.mil/docs/citations/ADA230163 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA230163 en eng http://www.dtic.mil/docs/citations/ADA230163 Approved for public release; distribution is unlimited. DTIC AND NTIS Seismic Detection and Detectors *SEISMIC DETECTION NORTHERN EUROPE USSR STATIONS SIMULATION PROPAGATION SOURCES POSITION(LOCATION) UNCERTAINTY DETECTION NETWORKS PARAMETERS SITES ARRAYS ACCURACY CAVITIES SENSITIVITY GEOLOGY ESTIMATES TIME SURFACES LEVEL(QUANTITY) DECOUPLING MAPS NOISE NORWAY ARRIVAL AZIMUTH EURASIA SEISMIC ARRAYS TECTONICS SEISMOLOGICAL STATIONS DATA BASES COUPLING(INTERACTION) SEISMIC DISCRIMINATION PE62714E Text 1990 ftdtic 2016-02-22T17:56:30Z The primary objective of this project is to simulate the detection and location capability of seismic networks that include regional stations and arrays in and around the Soviet Union. This report summarizes several studies of important issues for normalizing these simulations. Initial application is to data recorded by the NORESS and ARCESS arrays in Norway because of the size and quality of the data set and the fact the independence networks provide accurate locations of regional events. Azimuth and arrival time uncertainty are estimated for data recorded by these arrays to normalize simulations and location capability. The normalized simulation method is used to predict the detection and location capability of NORESS and ARCESS. These simulations are compared to the capability actually achieved by these arrays to validate the normalization. This method is shown to give accurate results for NORESS and ARCESS, so it can determine the sensitivity to network parameters (e.g., number stations, number of arrays versus single stations, noise levels, etc). The next step is to extrapolate the NORESS/ARCESS results to predict the capability of hypothetical networks in the Soviet Union. However, it is important to include lateral variations in propagation characteristics to simulate capability for such a large area. Therefore, a tectonic map of Eurasia is used to develop a 5 X 5 deg propagation grid. Source coupling is also important for accurate simulations, so a map of the surface geology of Eurasia is used as a guide to identify potential sites for cavity decoupling (e.g., regions of bedded or domed salt). Text Fennoscandia Defense Technical Information Center: DTIC Technical Reports database Norway |
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Open Polar |
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Defense Technical Information Center: DTIC Technical Reports database |
op_collection_id |
ftdtic |
language |
English |
topic |
Seismic Detection and Detectors *SEISMIC DETECTION NORTHERN EUROPE USSR STATIONS SIMULATION PROPAGATION SOURCES POSITION(LOCATION) UNCERTAINTY DETECTION NETWORKS PARAMETERS SITES ARRAYS ACCURACY CAVITIES SENSITIVITY GEOLOGY ESTIMATES TIME SURFACES LEVEL(QUANTITY) DECOUPLING MAPS NOISE NORWAY ARRIVAL AZIMUTH EURASIA SEISMIC ARRAYS TECTONICS SEISMOLOGICAL STATIONS DATA BASES COUPLING(INTERACTION) SEISMIC DISCRIMINATION PE62714E |
spellingShingle |
Seismic Detection and Detectors *SEISMIC DETECTION NORTHERN EUROPE USSR STATIONS SIMULATION PROPAGATION SOURCES POSITION(LOCATION) UNCERTAINTY DETECTION NETWORKS PARAMETERS SITES ARRAYS ACCURACY CAVITIES SENSITIVITY GEOLOGY ESTIMATES TIME SURFACES LEVEL(QUANTITY) DECOUPLING MAPS NOISE NORWAY ARRIVAL AZIMUTH EURASIA SEISMIC ARRAYS TECTONICS SEISMOLOGICAL STATIONS DATA BASES COUPLING(INTERACTION) SEISMIC DISCRIMINATION PE62714E Sereno, Jr, Thomas J. Attenuation of Regional Phases in Fennoscandia and Estimates of Arrival Time and Azimuth Uncertainty Using Data Recorded by Regional Arrays |
topic_facet |
Seismic Detection and Detectors *SEISMIC DETECTION NORTHERN EUROPE USSR STATIONS SIMULATION PROPAGATION SOURCES POSITION(LOCATION) UNCERTAINTY DETECTION NETWORKS PARAMETERS SITES ARRAYS ACCURACY CAVITIES SENSITIVITY GEOLOGY ESTIMATES TIME SURFACES LEVEL(QUANTITY) DECOUPLING MAPS NOISE NORWAY ARRIVAL AZIMUTH EURASIA SEISMIC ARRAYS TECTONICS SEISMOLOGICAL STATIONS DATA BASES COUPLING(INTERACTION) SEISMIC DISCRIMINATION PE62714E |
description |
The primary objective of this project is to simulate the detection and location capability of seismic networks that include regional stations and arrays in and around the Soviet Union. This report summarizes several studies of important issues for normalizing these simulations. Initial application is to data recorded by the NORESS and ARCESS arrays in Norway because of the size and quality of the data set and the fact the independence networks provide accurate locations of regional events. Azimuth and arrival time uncertainty are estimated for data recorded by these arrays to normalize simulations and location capability. The normalized simulation method is used to predict the detection and location capability of NORESS and ARCESS. These simulations are compared to the capability actually achieved by these arrays to validate the normalization. This method is shown to give accurate results for NORESS and ARCESS, so it can determine the sensitivity to network parameters (e.g., number stations, number of arrays versus single stations, noise levels, etc). The next step is to extrapolate the NORESS/ARCESS results to predict the capability of hypothetical networks in the Soviet Union. However, it is important to include lateral variations in propagation characteristics to simulate capability for such a large area. Therefore, a tectonic map of Eurasia is used to develop a 5 X 5 deg propagation grid. Source coupling is also important for accurate simulations, so a map of the surface geology of Eurasia is used as a guide to identify potential sites for cavity decoupling (e.g., regions of bedded or domed salt). |
author2 |
SCIENCE APPLICATIONS INTERNATIONAL CORP SAN DIEGO CA |
format |
Text |
author |
Sereno, Jr, Thomas J. |
author_facet |
Sereno, Jr, Thomas J. |
author_sort |
Sereno, Jr, Thomas J. |
title |
Attenuation of Regional Phases in Fennoscandia and Estimates of Arrival Time and Azimuth Uncertainty Using Data Recorded by Regional Arrays |
title_short |
Attenuation of Regional Phases in Fennoscandia and Estimates of Arrival Time and Azimuth Uncertainty Using Data Recorded by Regional Arrays |
title_full |
Attenuation of Regional Phases in Fennoscandia and Estimates of Arrival Time and Azimuth Uncertainty Using Data Recorded by Regional Arrays |
title_fullStr |
Attenuation of Regional Phases in Fennoscandia and Estimates of Arrival Time and Azimuth Uncertainty Using Data Recorded by Regional Arrays |
title_full_unstemmed |
Attenuation of Regional Phases in Fennoscandia and Estimates of Arrival Time and Azimuth Uncertainty Using Data Recorded by Regional Arrays |
title_sort |
attenuation of regional phases in fennoscandia and estimates of arrival time and azimuth uncertainty using data recorded by regional arrays |
publishDate |
1990 |
url |
http://www.dtic.mil/docs/citations/ADA230163 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA230163 |
geographic |
Norway |
geographic_facet |
Norway |
genre |
Fennoscandia |
genre_facet |
Fennoscandia |
op_source |
DTIC AND NTIS |
op_relation |
http://www.dtic.mil/docs/citations/ADA230163 |
op_rights |
Approved for public release; distribution is unlimited. |
_version_ |
1765997466841251840 |