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Title: Evaluation of national seismograph network detection capabilities: Final report. Volume 2

Abstract

This final report presents detection thresholds, detection probabilities, and location error ellipse projections for the US National Seismic Network (USNSN) with and without real-time cooperative stations in the eastern US. Network simulation methods are used with spectral noise levels at stations in the USNSN and other stations to simulate the processes of excitation, propagation, detection, and processing of seismic phases. The USNSN alone should be capable of detecting 4 or more P waves for shallow crustal earthquakes in nearly all of the eastern and central US at the magnitude 3.8 level. When real-time cooperative stations are used in conjunction with the USNSN, the network should be capable of detecting 4 or more P waves from events 0.2 to 0.3 magnitude units lower. The planned expansion of the USNSN and cooperative stations should improve detection levels by an additional 0.2 to 0.3 magnitudes units in many areas. Location uncertainties for the USNSN should be significantly improved by addition of real-time cooperative stations. Median error ellipses for magnitude 4.5 earthquakes in the eastern and central US depend strongly upon location, but uncertainties should be less than 100 square km in the central US and degrade to 200 square km or more offshoremore » and to the south and north of the international boundaries. Close cooperation with the Canadian National Network should substantially improve detection thresholds and location uncertainties along the Canadian border.« less

Authors:
; ;  [1]
  1. Maxwell Technologies - Federal Div., San Diego, CA (United States)
Publication Date:
Research Org.:
US Nuclear Regulatory Commission (NRC), Washington, DC (United States). Div. of Engineering Technology; Maxwell Technologies - Federal Div., San Diego, CA (United States)
Sponsoring Org.:
Nuclear Regulatory Commission, Washington, DC (United States)
OSTI Identifier:
548639
Report Number(s):
NUREG/CR-6448-Vol.2; MFD-TR-97-15804
ON: TI98001230; TRN: AHC29724%%40
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: Oct 1997
Country of Publication:
United States
Language:
English
Subject:
58 GEOSCIENCES; SEISMIC ARRAYS; PROGRESS REPORT; PERFORMANCE; SEISMIC DETECTION; LIMITING VALUES; EARTHQUAKES; SEISMIC P WAVES; EXCITATION; DATA ANALYSIS; COMPUTERIZED SIMULATION

Citation Formats

McLaughlin, K L, Barker, T G, and Bennett, T J. Evaluation of national seismograph network detection capabilities: Final report. Volume 2. United States: N. p., 1997. Web. doi:10.2172/548639.
McLaughlin, K L, Barker, T G, & Bennett, T J. Evaluation of national seismograph network detection capabilities: Final report. Volume 2. United States. https://doi.org/10.2172/548639
McLaughlin, K L, Barker, T G, and Bennett, T J. 1997. "Evaluation of national seismograph network detection capabilities: Final report. Volume 2". United States. https://doi.org/10.2172/548639. https://www.osti.gov/servlets/purl/548639.
@article{osti_548639,
title = {Evaluation of national seismograph network detection capabilities: Final report. Volume 2},
author = {McLaughlin, K L and Barker, T G and Bennett, T J},
abstractNote = {This final report presents detection thresholds, detection probabilities, and location error ellipse projections for the US National Seismic Network (USNSN) with and without real-time cooperative stations in the eastern US. Network simulation methods are used with spectral noise levels at stations in the USNSN and other stations to simulate the processes of excitation, propagation, detection, and processing of seismic phases. The USNSN alone should be capable of detecting 4 or more P waves for shallow crustal earthquakes in nearly all of the eastern and central US at the magnitude 3.8 level. When real-time cooperative stations are used in conjunction with the USNSN, the network should be capable of detecting 4 or more P waves from events 0.2 to 0.3 magnitude units lower. The planned expansion of the USNSN and cooperative stations should improve detection levels by an additional 0.2 to 0.3 magnitudes units in many areas. Location uncertainties for the USNSN should be significantly improved by addition of real-time cooperative stations. Median error ellipses for magnitude 4.5 earthquakes in the eastern and central US depend strongly upon location, but uncertainties should be less than 100 square km in the central US and degrade to 200 square km or more offshore and to the south and north of the international boundaries. Close cooperation with the Canadian National Network should substantially improve detection thresholds and location uncertainties along the Canadian border.},
doi = {10.2172/548639},
url = {https://www.osti.gov/biblio/548639}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1997},
month = {10}
}