Friday, February 8, 2013

i asked mr. brattcat what causes the circles in the whetstone brook


he felt the manhole cover at the base of the lower falls (to the right of center) might be responsible.
is he right? any one else have an idea?

14 comments:

Bibi said...

Your photo yesterday really made it look like those exotic (with a kind of fringe) water lily pads....frozen! If that's not it, would love to know.

Bibi said...

These are the ones I mean.

Sharon said...

Aha, that makes sense....

Tash said...

They are BEAUTIFUL!!!
And, as it is well known in scientific circles, these are formed by vortex ice fairies, named Vexiceses.

Tash said...

And now, here is the alternate explanation: Ice formation in cold season is a normal thing. But an ice circle? A rare thing to happen! It is not an intentionally made circle. Rather these ice circles are part of the natural phenomenon. These circles are usually found in rivers or ponds where the water is stable or sometimes even in oceans when it is calm. Ice circles are generally found in places where the weather is extremely cold. According to scientists, ice circles are formed when ice in the water gathers in the center part of the water and not at the edges which is the usual thing. Due to the water current the ice starts floating and slowly the ice from the vortex sinks down leaving only the periphery visible. These circles can have a diameter as large as 500 feet and are many times formed in groups or clusters. Crop circles are also one of the natural things which resemble ice circles. The edges of these circle come up as if they are carved. This really is a very amazing natural thing as the water in the surrounding is running its own course and in the midst of the river appears circle made with ice.
From
http://www.innovateus.net/content/what-are-ice-circles

Malyss said...

Don't ask me, the only ice I know is coming from my fridge!

Thérèse said...

I like Tash's comment.

brattcat said...

i love all of your comments but Tash what an amazing explanation. thank you.

Sharon Creech said...

Ooh that frigid water - and interesting to consider (via Tash) that a man-made intrusion (the manhole) elicits such a beautiful response from nature (the circles). xx

Carraol said...

Extraordinary image, this is what Wiki told us: An ice disc, ice circle, or ice pan is a natural phenomenon that occurs in slow moving water in cold climates. Ice circles are thin and circular slabs of ice that rotate slowly in the water. It is believed that they form in eddy currents. Have a great weekend!

Cezar and Léia said...

Impressive circles, I have no idea about the ice circle formation or so on...but I know they are beautiful!
Léia

Bibi said...

Wow, that's really interesting about the ice circles. I'm going to check out Tash's link now.

brattcat said...

i can't tell you how much i appreciate the thoughtful input here. what a great community this is. thank you.

Library Jewel said...

I loved reading all these explanations!