Analysis of High Frequency Seismic Data
The focus of the research is on the detection, location, and identification of seismic events using high frequency seismic data. Data for these studies come primarily from the NORESS small aperture array in Norway and its high frequency (up to 125 Hz) central element, and the high-frequency stations...
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ftdtic:ADA231804 2023-05-15T16:12:18+02:00 Analysis of High Frequency Seismic Data Israelsson, Hans Suteau-Henson, Anne Ryall, Alan SCIENCE APPLICATIONS INTERNATIONAL CORP (SAIC) ARLINGTON VA CENTER FOR SEISMIC STUDIES 1990-10-01 text/html http://www.dtic.mil/docs/citations/ADA231804 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA231804 en eng http://www.dtic.mil/docs/citations/ADA231804 Approved for public release; distribution is unlimited. DTIC AND NTIS Seismic Detection and Detectors *SEISMIC DATA *HIGH FREQUENCY STATIONS SOURCES PEAK VALUES POSITION(LOCATION) RATIOS DETECTION PARAMETERS SECONDARY SIGNAL TO NOISE RATIO HARMONICS SEISMIC DETECTION IDENTIFICATION FREQUENCY BANDS SPECTRA RESPONSE LONG RANGE(DISTANCE) SIGNALS SCALING FACTOR SEISMIC WAVES DATA ACQUISITION INSTRUMENTATION SHORT RANGE(DISTANCE) EARTHQUAKES NORWAY ANTENNA ARRAYS TEST FACILITIES SOUTH(DIRECTION) ANTENNA APERTURES SWEDEN SEISMIC ARRAYS MINES(ORDNANCE) NORTHERN EUROPE PENINSULAS USSR FUNCTIONS *SEISMIC DETECTION NORESS(NORWEGIAN REGIONAL SEISMIC SYSTEM) SEISMIC DISCRIMINATION PE62714E WUGL8A10DAAT Text 1990 ftdtic 2016-02-22T22:04:04Z The focus of the research is on the detection, location, and identification of seismic events using high frequency seismic data. Data for these studies come primarily from the NORESS small aperture array in Norway and its high frequency (up to 125 Hz) central element, and the high-frequency stations installed close to the Eastern Kazakhstan test sites. The first section is an examination of the NORESS data to be used in this project. Mining is found to be a major source of seismic signal in Fennoscandia with large concentrations of activity on the Kola Peninsula, Southern Norway, and Central Sweden. In section three, a method is developed for estimating the rolloff and scaling parameter for corner frequency-seismic moment from spectral ratios of a suite of events from the same location and with the same source function. Section four contains studies of the characterization of earthquakes and mine blasts. Inter- event correlation of mine blasts is shown to constrain the relative locations of events to very small distances (100m at 15 Hz). The effect of scatter in the delays of ripple fired quarry blasts are examined theoretically and illustrate that a 20% scatter can significantly attenuate the secondary harmonics of the spectrum and reduce the signal-to-noise ratio of the primary peak. The final section is a short note on the instrument responses of the NRDC stations and the Special Data Collection System used to monitor the Nevada test site. Because the response of the two systems are similar in the teleseismic frequency band (1 to 3 Hz), magnitudes obtained from the two different system can be compared in a gross sense. Text Fennoscandia kola peninsula Defense Technical Information Center: DTIC Technical Reports database Kola Peninsula Norway |
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Open Polar |
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Defense Technical Information Center: DTIC Technical Reports database |
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ftdtic |
language |
English |
topic |
Seismic Detection and Detectors *SEISMIC DATA *HIGH FREQUENCY STATIONS SOURCES PEAK VALUES POSITION(LOCATION) RATIOS DETECTION PARAMETERS SECONDARY SIGNAL TO NOISE RATIO HARMONICS SEISMIC DETECTION IDENTIFICATION FREQUENCY BANDS SPECTRA RESPONSE LONG RANGE(DISTANCE) SIGNALS SCALING FACTOR SEISMIC WAVES DATA ACQUISITION INSTRUMENTATION SHORT RANGE(DISTANCE) EARTHQUAKES NORWAY ANTENNA ARRAYS TEST FACILITIES SOUTH(DIRECTION) ANTENNA APERTURES SWEDEN SEISMIC ARRAYS MINES(ORDNANCE) NORTHERN EUROPE PENINSULAS USSR FUNCTIONS *SEISMIC DETECTION NORESS(NORWEGIAN REGIONAL SEISMIC SYSTEM) SEISMIC DISCRIMINATION PE62714E WUGL8A10DAAT |
spellingShingle |
Seismic Detection and Detectors *SEISMIC DATA *HIGH FREQUENCY STATIONS SOURCES PEAK VALUES POSITION(LOCATION) RATIOS DETECTION PARAMETERS SECONDARY SIGNAL TO NOISE RATIO HARMONICS SEISMIC DETECTION IDENTIFICATION FREQUENCY BANDS SPECTRA RESPONSE LONG RANGE(DISTANCE) SIGNALS SCALING FACTOR SEISMIC WAVES DATA ACQUISITION INSTRUMENTATION SHORT RANGE(DISTANCE) EARTHQUAKES NORWAY ANTENNA ARRAYS TEST FACILITIES SOUTH(DIRECTION) ANTENNA APERTURES SWEDEN SEISMIC ARRAYS MINES(ORDNANCE) NORTHERN EUROPE PENINSULAS USSR FUNCTIONS *SEISMIC DETECTION NORESS(NORWEGIAN REGIONAL SEISMIC SYSTEM) SEISMIC DISCRIMINATION PE62714E WUGL8A10DAAT Israelsson, Hans Suteau-Henson, Anne Ryall, Alan Analysis of High Frequency Seismic Data |
topic_facet |
Seismic Detection and Detectors *SEISMIC DATA *HIGH FREQUENCY STATIONS SOURCES PEAK VALUES POSITION(LOCATION) RATIOS DETECTION PARAMETERS SECONDARY SIGNAL TO NOISE RATIO HARMONICS SEISMIC DETECTION IDENTIFICATION FREQUENCY BANDS SPECTRA RESPONSE LONG RANGE(DISTANCE) SIGNALS SCALING FACTOR SEISMIC WAVES DATA ACQUISITION INSTRUMENTATION SHORT RANGE(DISTANCE) EARTHQUAKES NORWAY ANTENNA ARRAYS TEST FACILITIES SOUTH(DIRECTION) ANTENNA APERTURES SWEDEN SEISMIC ARRAYS MINES(ORDNANCE) NORTHERN EUROPE PENINSULAS USSR FUNCTIONS *SEISMIC DETECTION NORESS(NORWEGIAN REGIONAL SEISMIC SYSTEM) SEISMIC DISCRIMINATION PE62714E WUGL8A10DAAT |
description |
The focus of the research is on the detection, location, and identification of seismic events using high frequency seismic data. Data for these studies come primarily from the NORESS small aperture array in Norway and its high frequency (up to 125 Hz) central element, and the high-frequency stations installed close to the Eastern Kazakhstan test sites. The first section is an examination of the NORESS data to be used in this project. Mining is found to be a major source of seismic signal in Fennoscandia with large concentrations of activity on the Kola Peninsula, Southern Norway, and Central Sweden. In section three, a method is developed for estimating the rolloff and scaling parameter for corner frequency-seismic moment from spectral ratios of a suite of events from the same location and with the same source function. Section four contains studies of the characterization of earthquakes and mine blasts. Inter- event correlation of mine blasts is shown to constrain the relative locations of events to very small distances (100m at 15 Hz). The effect of scatter in the delays of ripple fired quarry blasts are examined theoretically and illustrate that a 20% scatter can significantly attenuate the secondary harmonics of the spectrum and reduce the signal-to-noise ratio of the primary peak. The final section is a short note on the instrument responses of the NRDC stations and the Special Data Collection System used to monitor the Nevada test site. Because the response of the two systems are similar in the teleseismic frequency band (1 to 3 Hz), magnitudes obtained from the two different system can be compared in a gross sense. |
author2 |
SCIENCE APPLICATIONS INTERNATIONAL CORP (SAIC) ARLINGTON VA CENTER FOR SEISMIC STUDIES |
format |
Text |
author |
Israelsson, Hans Suteau-Henson, Anne Ryall, Alan |
author_facet |
Israelsson, Hans Suteau-Henson, Anne Ryall, Alan |
author_sort |
Israelsson, Hans |
title |
Analysis of High Frequency Seismic Data |
title_short |
Analysis of High Frequency Seismic Data |
title_full |
Analysis of High Frequency Seismic Data |
title_fullStr |
Analysis of High Frequency Seismic Data |
title_full_unstemmed |
Analysis of High Frequency Seismic Data |
title_sort |
analysis of high frequency seismic data |
publishDate |
1990 |
url |
http://www.dtic.mil/docs/citations/ADA231804 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA231804 |
geographic |
Kola Peninsula Norway |
geographic_facet |
Kola Peninsula Norway |
genre |
Fennoscandia kola peninsula |
genre_facet |
Fennoscandia kola peninsula |
op_source |
DTIC AND NTIS |
op_relation |
http://www.dtic.mil/docs/citations/ADA231804 |
op_rights |
Approved for public release; distribution is unlimited. |
_version_ |
1765997583033958400 |