NORSAR Research and Development - 1 July 1972-30 June 1973

Abstract

The report covers the period 1 Jul 1972 - 30 June 1973 which characterized by continuous improvements in event detection and location performance during routine operation of the array. The research efforts were aimed at improving the event detectability, and the potential exploitation of wave scattering effects for improving NORSAR's event detection and classification capabilities. Work completed and in progress is presented. The first section deals with seasonal and diurnal noise level fluctuations plus changes in the character of the noise. Next, different types of array beamforming and optimum signal estimation techniques are discussed. The importance of so-called intrinsic time and amplitude anomalies or wave scattering (Chernov) effects in array data processing are also demonstrated. Finally, work on seismic verification problems is discussed briefly.

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1973
Accession Number
AD0773320

Entities

People

  • E. S. Husebye

Organizations

  • Royal Norwegian Council for Scientific and Industrial Research

Tags

Communities of Interest

  • Energy and Power Technologies
  • Materials and Manufacturing Processes
  • Sensors
  • Space

DTIC Thesaurus Topics

  • Bandpass Filters
  • Correlation Techniques
  • Data Processing
  • Data Science
  • Databases
  • Detection
  • Detectors
  • Event Detection
  • False Alarms
  • Frequency
  • Information Science
  • New York
  • Seismic Arrays
  • Seismic Waves
  • Surface Waves
  • Travel Time
  • Wave Propagation

Readers

  • Seismology
  • Systems Analysis and Design
  • Technical Research and Report Writing.