Go Back   Steve's Digicams Forums > Post Your Photos > Biweekly Shoot Out

Reply
 
Thread Tools Search this Thread
Old Apr 12, 2006, 9:51 PM   #1
Senior Member
 
philby's Avatar
 
Join Date: Jun 2002
Posts: 407
Default

I came across these "ice flowers" on a frozen pond last year.


philby is offline   Reply With Quote
Sponsored Links
Old Apr 13, 2006, 3:10 AM   #2
Moderator
 
selvin's Avatar
 
Join Date: Aug 2002
Posts: 7,204
Default

Philby,

I never knew these existed. Goes to show how much I know about frozen water.

Thanks for the science lesson.

Aloha
selvin is offline   Reply With Quote
Old Apr 13, 2006, 8:14 AM   #3
Moderator
 
calr's Avatar
 
Join Date: Sep 2003
Location: Beaverton, OR
Posts: 8,466
Default

A very interesting photo. Can you tell us what they are and how they are formed? I have never seen such a thing.

Cal

calr is offline   Reply With Quote
Old Apr 13, 2006, 11:24 AM   #4
Senior Member
 
StitchBabe's Avatar
 
Join Date: Feb 2005
Posts: 1,023
Default

Wow...you really had your eyes open to see this! These 'ice flowers' are amazing! Goodfor you!! :-)

~~StitchBabe~~
StitchBabe is offline   Reply With Quote
Old Apr 13, 2006, 6:34 PM   #5
Senior Member
 
philby's Avatar
 
Join Date: Jun 2002
Posts: 407
Default

I'm not entirely sure what caused the crystals to form. I took the photo in the morning before the sun had time to hit the pond, after the sun hit they melted away. There was a lot of hoar frost on the surrounding snow and vegetation. I assume that it is a form of hoar frost. I visit this place often in the course of my work and have seen a lot of ice variations on the pond. I don't recall seeing other occurrences of this type of crystal formation.
philby is offline   Reply With Quote
Old Apr 13, 2006, 7:08 PM   #6
Senior Member
 
Join Date: Jul 2005
Posts: 2,885
Default

Great picture but what is "hoar" frost??
vsch1 is offline   Reply With Quote
Old Apr 13, 2006, 7:44 PM   #7
Senior Member
 
philby's Avatar
 
Join Date: Jun 2002
Posts: 407
Default

Hoar frost is moisture in the air freezing to frozen surfaces and forming crystals. It is common on cold clear nights.
philby is offline   Reply With Quote
Old Apr 13, 2006, 7:59 PM   #8
Moderator
 
calr's Avatar
 
Join Date: Sep 2003
Location: Beaverton, OR
Posts: 8,466
Default

Hoar frost needs something to condense on. I suspect there were som small objects such as pine needles or something else sticking up out of the ice and the frost crystallized on them.

To add to the description of hoar frost, it is a very rough, crystalline form of ice that forms on exposed objects such as tree branches, chain link fences, etc. I think it is related to rime ice which is a rough form of ice that forms on the wings of airplanes.

Cal

calr is offline   Reply With Quote
Old Apr 13, 2006, 8:16 PM   #9
Junior Member
 
Turnbill's Avatar
 
Join Date: Mar 2006
Posts: 22
Default

this is hoar frost!



it's simply water vapor that condenses as ice onto a cold surface. the above photo shows the accumulation of a night's worth of moist air passing over mount madison in new hampshire (that's mount washington in the distance). there's also a little hoar frost in my avatar photo to the left.

Bill
Turnbill is offline   Reply With Quote
Old Apr 14, 2006, 1:41 AM   #10
Moderator
 
selvin's Avatar
 
Join Date: Aug 2002
Posts: 7,204
Default

Oomigosh, lucky I live Hawaii. That looks a bit too cold for me.

Aloha
selvin is offline   Reply With Quote
 
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -5. The time now is 7:11 PM.