Singing Dunes

[Henry Musikar]

Thanks to Jessica:
http://www.nytimes.com/2006/07/25/science/25find.html?_r=1&fta=y 

Since at least the time of Marco Polo, desert travelers have heard the songs
of the dunes, a loud - up to 115 decibels - deep hum that can last several
minutes. (You can listen to them here,
http://www.nytimes.com/packages/khtml/2006/07/24/science/20060725_FIND_FEATU
RE.html .) 
While the songs are steady in frequency, the dunes do not have perfect
pitch. At Sand Mountain, for example, dunes can sing slightly different
notes at different times, from B to C sharp.

http://tinyurl.com/onthedunes 

Henry Mu
Sr. IT Consultant
http://astore.amazon.com/tdcoccamsaxe-20/