posted on Sep, 9 2012 @ 08:52 AM
Biologists at the University of Washington's Marine Biology program believe the source of the noise may be the male midshipman fish, which can be
found in a local waterway.
The midshipman fish lets out a distinctive mating call that sounds like a drone and can go on for hours as males compete against each other for female
attention. Researchers believe the mating calls may be bouncing off ships and buildings, amplifying the sound.
But scientists attempting to record the strange hum on Friday were unable to pinpoint the source of the noise.
Typical Midshipman Type II male calls are divided into: short grunts that last for milliseconds or are produced in a series of grunts called a
“grunt train,” mid-duration growls, and long duration advertisement hums that can last up to an hour.
These calls can be recorded naturally. They can also be produced in a laboratory, a procedure known as “fictive calling” In nature, two muscles
contracting on the swim bladder produce these sounds. In the lab, sounds are produced by a stimulating electrode placed on the periaqueductal gray
(PAG) and a recording electrode placed on the occipital nerve that leads to the sonic muscles of the
Although Midshipman fish have been known to wake houseboat owners, I find it highly unlikely that even an entire school of fish could produce such a
sound that "bounces off buildings and ships" and permeates through-out an entire section of a city on and off for 2 days.
If this explanation is the most like cause of the "West Seattle Hum" then why has it not occurred during every previous mating season to the point of
keeping residents awake for hours at a time.
Apparently a similar sound occurred in 2009 but a failed attempt was made in determining the cause.
Could this have a more sinister explanation - perhaps something to do with H.A.A.R.P?
Is it related to other mysterious sounds heard around the world that has left scientists baffled?
Can our Seattle based ATS members weigh in here - lets hear what you have to say.
edit on 9-9-2012 by Sublimecraft because: (no reason given)