A friend in Australia sent me the pic. Where she got it I don't know. It's been forwarded around a bit. Here's a description of what it's supposed to be all about:
[P class=MsoNormal][FONT face=Arial][SPAN style="FONT-FAMILY: Arial"]Mt. St. Helens[/SPAN][/FONT]
[FONT face=Arial size=2][SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"] [/SPAN][/FONT]
[FONT face=Arial size=2][SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"] [/SPAN][/FONT]
[FONT face=Arial size=2][SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"]Here is something not many of us get to see, unless[/SPAN][/FONT]
[FONT face=Arial size=2][SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"]you live near there - [?XML:NAMESPACE PREFIX = ST1 /][ST1:PLACE w:st="on"][ST1:PLACETYPE w:st="on"]Mt.[/ST1:PLACETYPE] [ST1:PLACENAME w:st="on"]St. Helens[/ST1:PLACENAME][/ST1:PLACE] at sunrise.[/SPAN][/FONT]
[ST1:PLACE w:st="on"][ST1:PLACETYPE w:st="on"][FONT face=Arial size=2][SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"]Mt.[/SPAN][/FONT][/ST1:PLACETYPE][FONT face=Arial size=2][SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"] [ST1:PLACENAME w:st="on"]St. Helens[/ST1:PLACENAME][/SPAN][/FONT][/ST1:PLACE][FONT face=Arial size=2][SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"] continues to spew ash, while it is[/SPAN][/FONT]
[FONT face=Arial size=2][SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"]forming a lava dome in the crater and still having[/SPAN][/FONT]
[FONT face=Arial size=2][SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"]minor tremors.[/SPAN][/FONT]
[FONT face=Arial size=2][SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"]Here in this sunrise shot, she appears to be blowing[/SPAN][/FONT]
[FONT face=Arial size=2][SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"]smoke rings (and anything so benign is welcomed, given[/SPAN][/FONT]
[FONT face=Arial size=2][SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"]recent history).[/SPAN][/FONT]
[FONT face=Arial size=2][SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"]What forms the "smoke rings" is the air flowing over[/SPAN][/FONT]
[FONT face=Arial size=2][SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"]the mountain getting pushed up higher as it goes up[/SPAN][/FONT]
[FONT face=Arial size=2][SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"]and over the top. The moisture content and initial[/SPAN][/FONT]
[FONT face=Arial size=2][SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"]temperature are just right so that the moisture[/SPAN][/FONT]
[FONT face=Arial size=2][SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"]condenses from a vapor to small particles at the[/SPAN][/FONT]
[FONT face=Arial size=2][SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"]higher altitude. When the moving air moves past the[/SPAN][/FONT]
[FONT face=Arial size=2][SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"]peak and comes down again, the particles evaporate[/SPAN][/FONT]
[FONT face=Arial size=2][SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"]back to an invisible vapor.[/SPAN][/FONT]
[FONT face=Arial size=2][SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"]The two "pancakes" describe that there are two layers[/SPAN][/FONT]
[FONT face=Arial size=2][SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"]of air for which this is happening, thus making this[/SPAN][/FONT]
[FONT face=Arial size=2][SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"]awesome picture possible.[/SPAN][/FONT] [?XML:NAMESPACE PREFIX = O /][O:P][/O:P]