Spirals of Ice Extruded from Steel Posts Dr. James
R. Carter, Professor Emeritus Illinois
State University, Normal, IL 61790-4400 |
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In January 2007 I was introduced to some interesting
photos of ice growing from a metal fence on Vancouver Island, British
Columbia, Canada. I posted photos of this
ice and have subsequently received photos from two persons showing
spirals of ice being extruded from steel posts. Their photos
show ice in the form of rods that curve into spirals. Beautiful
and natural. From a stairway in SW England The first set of photos were taken by Kath
Tooley in southwestern England. She found these spirals on a set of
steel stairs. In this photo I see three spirals extending from the
junctions of three vertical pipes and the handrail. Note that not every
pipe junction produced ice.
The photo below is a closeup from the photo
above which gives a better view of the rod of ice. Note the hole near
the top of the vertical pipe behind the spiral, but no ice is emerging from
that hole. The fact that this pipe has a hole drilled in it tells
us something about these pipes.
I believe the photo below shows the spiral
of ice that is in the middle of the three spirals in the top photo.
Below are two photos showing the close up of two of the spirals. I believe these are
different spirals. It is my interpretation that the ice is quite clear
and translucent -- letting light pass through it. It is not transparent because you cannot see the
pipes through the rods of ice. How long did these spirals last in
the Sun? And from a playground in Moscow The second set of photos were taken by
Alexander Nevzorov in Moscow, Russia. In this case
the steel pipes have been bent and welded into a climbing aparatus
for children. The many colors of the pipes reflect the cheerful nature of the
apparatus. But it was a gray day when Alexander found this spiral of
ice extending down from a red pipe. There is a thin layer of snow,
which looks to be very fresh. I suspect this was the only spiral of ice
on this complex of pipes. I can see nothing more and Alexander did not
tell me about any more.
The other two photos I received show the
spiral of ice extending down from the junction of the small red pipe welded to
the larger blue pipe. In the photos below I show a closeup of the junction
which reveals two holes, one producing the larger rod of ice which made the
spiral and a small hole which produced a thin rod of ice which is
straight.
As I reviewed these two sets of photos I realized they are not dissimilar to ice shown in the
photos from Sheryl Terris and some of the ice I
grew from pipes. The examples from England and Moscow are natural
and as such are particularly attractive. From my many photos I
found these examples of rods of ice being extruded from holes drilled
into steel pipes. In the photo on the left I had two holes in the side
of a pipe. On the right the hole was drilled into the cast iron
cap. This ice is in the form of a rod
and shows the tendency to curve into a spiral. But these
ice rods are quite milky and not translucent. Why the
differences?
The blue background is a large piece of
cloth of uniform color. As such it makes a good background for
photos. All too frequently the mix of objects in the background detract
from the focus of the photo. Thank goodness for the Internet and digital cameras
for they let us exchange information about these attractive ice
formations. Please take on the task of looking for ice when the
freeze/thaw processes are underway. Feel free to contact me at jrcarter@ilstu.edu
if you see any ice of this nature in your outings. And, note in these cases the ice is found in the as-built
environment -- not on plants. Return to the master page of Diurnal
Freeze/Thaw Ice Formations . |
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