Ping Alan



I hope this shows up for you Alan.
It is a photo of Mt. St. Helen's taken at sunrise.
The caption reads:

MT. St. Helen's, continues to spew ash, while it is forming a lava dome
in the crater and still having minor tremors. Here, in this sunrise
shot, she appears to be blowing smoke rings (and anything so benign is
welcomed, given recent history.)

What forms the "smoke rings" is the air flowing over the mountain
getting pushed up higher as it goes up and over the top. The moisture
content and initial temperature are just right so that the moisture
condenses from a vapor to small particles at the higher altitude. When
the moving air moves past the peak and comes down again, the particles
evaporate back to an invisible vapor. The two "pancakes" describe that
there are two layers of air for which this is happening, thus making
this awesome picture possible.




--



{ Disclaimer: Non Existent words contained within this poast
were created in response to the Paperwork Reduction Act.}
{If you have a problem with that,
take it to the Environmentalists Complaint Dept.}


A Free Thinker.

JPEG image