Character of Vertical-Component Signals at High-Gain, Long-Period Stations and Signal Interference on Seismic Detection Networks

Abstract

The amplitude and period of over 600 long-period vertical-component seismic signals were measured at regular intervals in order to characterize the LR signal and its coda. Signal envelopes out to 20 minutes after LR onset were found to vary considerably, but coda amplitudes decayed rather uniformly with time. Using average signal and coda parameters and randomly-generated events, a program which simulates long-period signal interference at seismic stations was devised to predict interference effects on network detection statistics. Increasing the size of a network should not increase the number of reported events with interference at any M sub s, but lowering the station thresholds will increase this number at lower M sub s values.

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Document Details

Document Type
Technical Report
Publication Date
Jul 21, 1975
Accession Number
ADA015969

Entities

People

  • D. H. Von Seggern
  • M. F. Tillman

Tags

Communities of Interest

  • Energy and Power Technologies
  • Sensors

DTIC Thesaurus Topics

  • Background Noise
  • Databases
  • Detection
  • Dispersions
  • Earth Models
  • Earthquakes
  • Gain
  • High Gain
  • Islands
  • Love Waves
  • Measurement
  • Models
  • Personality
  • Rayleigh Waves
  • Simulations
  • Surface Waves
  • Waves

Fields of Study

  • Engineering

Readers

  • Mathematics or Statistics
  • Radio communications and signal processing.
  • Seismology