Extraction of Long-Period Bodywaves

Abstract

A polarization filter for long-period bodywaves was developed and tested on 100 events from the Kurile Islands and measured at the Guam Seismic Research Observatory. Fifty percent detection thresholds before processing were m sub b = 5.5 and 5.1 for P and S waves, respectively, and were unchanged by the filter unless a substantial false alarm rate was allowed, when the P threshold was reduced to m sub b = 5.0. There is evidence that this poor performance is due to the data set used.

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Document Details

Document Type
Technical Report
Publication Date
Nov 14, 1977
Accession Number
ADA053602

Entities

People

  • Stephen S. Lane

Organizations

  • Texas Instruments

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Adaptive Filters
  • Air Force
  • Contracts
  • Data Sets
  • Detection
  • Detectors
  • Distribution Functions
  • Earthquakes
  • Extraction
  • False Alarms
  • Frequency
  • Kurile Islands
  • Probability
  • Radiation Patterns
  • Surface Waves
  • Warning Systems
  • Waves

Readers

  • Mathematics or Statistics
  • Seismology