Discrimination Techniques for Regional Events at NORSAR Using a Single Site

Abstract

The purpose of this study was to determine the best discrimination technique for shallow earthquakes and presumed explosions occurring in the NORSAR first zone. Single-site instrument-corrected NORSAR short-period data was used for the analysis. The three discriminants investigated were: depth, phase energy ratios, and spectral splitting. The depth discriminant requires more accurate epicenter locations for the smaller events than is presently the case. The phase energy ratios appear to be an effective discriminant, but the spectral splitting discriminant needs a broader range of magnitudes before it can be evaluated.

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Document Details

Document Type
Technical Report
Publication Date
Dec 31, 1974
Accession Number
ADA015055

Entities

People

  • Ervin S. Becker
  • Philip R. Laun

Organizations

  • Texas Instruments

Tags

Communities of Interest

  • Energy and Power Technologies
  • Sensors

DTIC Thesaurus Topics

  • Accuracy
  • Air Force
  • Databases
  • Digital Data
  • Discrimination
  • Earthquakes
  • Epicenters
  • Explosions
  • Frequency
  • Frequency Bands
  • Identification
  • Measurement
  • Splitting
  • Surface Waves
  • Travel Time
  • Wave Power
  • Waves

Readers

  • Seismology