the mystery of ice circles

One day, when you're walking by the river and then saw a strange circle on the surface of the river, do not rush to conclude that the UFO had just landed in the river. Maybe what you see is the Ice Circle newly formed.


Ice Circle or circle of ice is a phenomenon that appears in the water that has a slow flow in a cold climate. Resembles a giant dish which consists of ice and rotated slowly on the water surface. This mystery is in fact already been alluded to in the 19th century. An illustration of the Ice Circle magazine ever published in Scientific American in 1895. London News also reported this phenomenon that occurred in Toronto in 1930.

 
Generally, this phenomenon appears in Scandinavia and North America, but never one time seen in the UK in January 2009.

 
Ice Circle generally appear on the bend of the river where the accelerating water flow creates a force called 'rotational shear', which then broke the ice shelf and play it. In line with the rotation of the disc, he was grinding the ice around it so it becomes smooth and form a perfect circle. This phenomenon has been identified despite the cause, but it remains a rare occurrence.

Here are a few examples of the beautiful ice circle:

Rivers in Michigan, USA.

---

River Otten in Devon, England. Diameter of 3 meters

---

Frozen river in Russia

---

Sheridan River at Rattray Marsh Conservation Area in Canada. diameter of about 1.6 meters

---

A river in Sweden

---

Waldo, the United States.

---

Amasa, Michigan.

---

Connecticut, United States.