Impurities can lower (or increase) the freezing point of one side of the flowing water allowing it to freeze while the other side is still flowing, thereby creating a curved icicle.
Breeze will not explain why the curve changes direction but impurities can. Jojo ----- Original Message ----- From: David Jonsson To: vortex-l Sent: Wednesday, July 04, 2012 10:51 PM Subject: [Vo]:Big ice crystals and curved ice rods around volcano in Antarctica Hi How can ice crystals grow to ths big size? Image is from around the volcano Mount Erebus at Antarctica http://lh5.ggpht.com/-EVQxlm4Fp1w/TB6EkSJ9NmI/AAAAAAAABw4/MOncMvTzN0Y/2009-12-31111011.JPG?imgmax=800 More images of big crystals can be seen here http://erebus.nmt.edu/index.php/icecaves I also want an explanation to how ice rods can be curved as can be seen on several pictures http://lh3.ggpht.com/-2Bw7mgY461o/TB6EhYunyXI/AAAAAAAABws/QWXUvOFL3vg/2009-12-31103548.JPG?imgmax=800 http://lh3.ggpht.com/-XR5B_UJY8Ts/TB6EdzjddaI/AAAAAAAABwQ/MhSMX9ETNfg/2009-12-31101131.JPG?imgmax=800 http://lh3.ggpht.com/-HvrH_hFFn1E/TB6EeWS3ZII/AAAAAAAABwU/XLtFGnKQMBg/2009-12-31101441.JPG?imgmax=800 I have never sen this in Sweden. Please explain the processes involved in determining crystal size. Hälsningar David
