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

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Plots of 15-minute midshipman humming intensity

The sound intensity in the first harmonic of the mating hum is shown .

2009. Click HERE for monthly plots.
2010. Click HERE for monthly plots.
All years.
Diel distribution in humming power, for the 2009 mating season. Converted to local time (PST), the humming jumps up in the 8:00-to-9:00 PM bin, and the last strong humming is from 5:00 to 6:00 AM. No wonder that people sleeping in houseboats were annoyed!
More diel plots.
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