Fifteen-minute recordings with the underwater microphone, near the shore end of the pier. The frequency range is 0 to 500 Hz. Click on a spectrogram for a blowup with labeled axes.
11:21 to 11:36
11:45 to 12:00
12:01 to 12:16
12:18 to 12:33
The broad-band noise lasting about 5 minutes and centered at 12:28 is the prop noise from a tanker, passing by on its way to the Chevron refinery in Richmond.
12:34 to 12:49
13:11 to 13:26
13:27 to 13:42
13:44 to 13:59
14:21 to 14:36
14:59 to 15:14
15:15 to 15:30
15:32 to 15:47
15:49 to 16:04
16:07 to 16:22
16:23 to 16:37