An Investigation of the Cyclic Nature of the Ambient Noise within Lake Pend Oreille.

Abstract

Lake Pend Oreille ambient noise measurements were acquired during 1986 in support of Noise samples obtained 9 times a day were averaged over hourly, weekly, and monthly periods. Noise trends were summarized. Variations in noise level with times of day and season of the year correlate well with trends in weather patterns and recreational boating use. Daily averaged data clearly show the contribution of recreational boating to lake noise - as much as 10-15 dB average level increase for midday as compared to night. Weekly averages for weekend days are modestly higher (up to 50 dB) than mid-week days, again due to increased weekend use of the lake by recreational boating. Average seasonal trends are generally higher (up to 10 dB) during the summer months than in the winter months.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1987
Accession Number
ADA189296

Entities

People

  • Jonathan Cummings Ii

Tags

Communities of Interest

  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Acoustics
  • Ambient Noise
  • Amplifiers
  • Composite Materials
  • Computer Programs
  • Computers
  • Data Acquisition
  • Databases
  • Frequency Bands
  • Measurement
  • Noise
  • Operating Systems
  • Recording Systems
  • Sound Pressure
  • Spectra
  • Statistics
  • Tape Recorders

Fields of Study

  • Environmental science

Readers

  • Auditory Neuroscience/Auditory Physiology.
  • Maritime Security/Maritime Homeland Security
  • Mathematics or Statistics