The Norwegian Seismic Array (NORSAR)

Abstract

The uptime of the NORSAR online detection processor system has averaged 91.9%, which represents an improvement of 3% compared to the previous period. Almost half of the downtime was due to problems in connection with the termination of the NOrSAR ARPANET circuit. The SPS has been working well and has caused less than 1% downtime. A total of 1681 events were reported in this period, giving a daily average of 9.2 events. The number of reported events per month varies from 210 in February to 363 in December. There have been no major breakdowns on the communications lines, but some lines have had periods with bad performance, especially the 02C line. The new DP system to be implemented on IBM 4331/MODCOMP is now, except for some EOC functions, ready. The communication problem between IBM 4331 and Modcomp has been solved, and test runs have been done with no errors. Some improvements in programs and some more testing still needs to be done before the new DP is ready to replace the current system. The research activity is briefly described with a summary of seven technical reports/papers prepared.

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1982
Accession Number
ADA126249

Entities

People

  • Joergen Torstveit

Organizations

  • Royal Norwegian Council for Scientific and Industrial Research

Tags

Communities of Interest

  • Energy and Power Technologies
  • Sensors
  • Weapons Technologies

DTIC Thesaurus Topics

  • Data Analysis
  • Detection
  • Detectors
  • Downtime
  • Eastern Europe
  • Frequency
  • Frequency Bands
  • Geometry
  • Measurement
  • Operating Systems
  • Phase Velocity
  • Plastic Explosives
  • Security
  • Seismic Arrays
  • Three Dimensional
  • Time Intervals
  • Travel Time

Readers

  • Computer Science.
  • Seismology
  • Technical Research and Report Writing.