Low Rumbling sound outside (Tucson, Oro Valley: 2013, house, construction)

[tumamoc]

You know, the Nogales-Rio Rico-Sahuarita-Tucson drug tunnel .

[cazboy]

Ghadji1, relax. What you're hearing is a natural phenomenon that happens all over the world. The "Taos Hum" is just one of many other examples - it happens in Egypt all the time. It happens where sand dominates the landscape, and it's just a manifestation of piezoelectricity. Some aspects of the phenomenon is still partially unexplained, but the gist of it is this: sand is composed of several minerals, including tiny pieces of quartz. When you squeeze a quartz crystal, a tiny bit of electrical potential is created. So in a sand dune, the sand under the surface is being compressed under its own weight and when the top of the dune shifts slightly from the wind, trillions of little quartz crystals are being triggered to release a tiny bit of electrical potential - and some of that potential is released as an audible sound. There is tons of information about this phenomenon, and here is just one of them: click here.

Hope that helps.

[jksn75]

tumamoc...drug smugglers have never constructed a tunnel into Tucson or Sahuarita. I would say it would be almost impossible. They keep the tunnels small and short to move drugs right across the border. They pop up through houses near the border or through a small hole in the ground. Perhaps you were just kidding?

[azdr0710]

Originally Posted by jksn75

Perhaps you were just kidding?

tumamoc very definitely was kidding!....never take a low, rumbling sound underground too seriously.....

[jksn75]

I figured so, but then again people never cease to amaze me

[Flodari]

Hi, you should report this low frequency hum to Linda Moulton Howe at Earthfiles.com. She speaks on Coast to Coast AM radio show and is an investigative reporter on "all things strange." I'm interested in this Tucson hum, since I plan on moving to Tucson and am very sensitive to noise. Low frequency noise (LFN) is the most stressful and damaging to humans (and, as you can see by your cats, animals).

[Home_Kid]

i hear low freq stuff at night, its a low db level, i think is a pool pump in my neighborhood. during the day background noise level is too high for me to hear low freq, but at night it can be annoying. i am in marana though.

[motormaker]

Interesting article on the web this AM.

Mysterious hum driving people crazy around the world - NBC News.com

[Magnolia44]

Cazboy is right on, google it, it is a fascinating phenomenon! I think first noticed in Saudi Arabia, makes sense...

[Marcy1210]

Originally Posted by motormaker

Interesting article on the web this AM.

Mysterious hum driving people crazy around the world - NBC News.com

Interesting that the "hum" has only been around for 40 years, and is mostly heard by people 55-70. The youngest of the "hearers" would have been about 15 when the hums were first heard, and the oldest about 30. What would cause the hum to suddenly be noticed and why that age group? What happened in the UK, US and Australia in the early 70's? I'd go with aliens.