Underwater Sound from the RTC Pier { Underwater Acoustics Research Group }

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15-minute humming power, all years

Each point represents a fit to the fundamental humming frequency for a 15-minute sound file. Fits with error flags due to a low signal-to-noise ratio or frequency out of range were excluded. However, points with low intensities often represent accidental peaks from ship noise, rather than midshipman humming.

Blue points: 2009; red points: 2010.

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