Julia-unidentified-sound-spectrogram.jpg

Summary

Description
English: A spectrogram of the mystery sound "Julia" recorded by the NOAA hydrophone array in 1999. Original source is here: http://www.pmel.noaa.gov/vents/acoustics/sounds/julia.html
Date
Source Acoustic Monitoring Program - US National Oceanic and Atmospheric Administration
Author US National Oceanic and Atmospheric Administration
Permission
( Reusing this file ) 		PD-USGOV-NOAA

The sound was recorded at approximately 15° S, 98° W

Licensing

Public domain
This image is in the public domain because it contains materials that originally came from the U.S. National Oceanic and Atmospheric Administration , taken or made as part of an employee's official duties.

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depicts

inception

1 March 1999