ML 114737

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Paul O Thompson
Jul 1963

    Geography
  • United States
    California
    Locality
  • waterbody:North Pacific Ocean W from: San Clemente Island
No locations found with lat/long
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  • Mono
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NOTES: See Naval Electronics Lab research report 1290, "Marine Biological Sound West of San Clemente Island: Diurnal Distributions and Effects on Ambient Noise Level durng July 1963." Report dated 24May1965, in file under Thompson. Report presents an analysis of several of these sounds; however, it's unknown exactly which of these sounds (catalog numbers 114731 through 114749) are the ones analyzed in this report. This sound is referenced in the text as the Low-Frequency Groan, and is a 4-7 second slow downsweep from around 80 Hz to 20 Hz (extremely difficult to hear due to noise) [1Jul2003 CAB] SEAOCEAN

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