It's too cold everyday in Japan. How do you do?
Lake Suwa, located in the middle of Japan, was frozen totally and
ridges of ice were found through the center of lake.
Local people called the phenomena as "Omiwatari" and
beleive it as the sign of blessedness.
- Lake Suwa: Omiwatari revealed since 2006
Ice is fanny material.
I found an ice sheet covering a small pond in Tokyo.
Several meters square.
A rough surface. It implies that the ice sheet has been melted in
day-time and frozen in night-time.
The mechanism is as same as the ice ridge called as "Omiwatari".
...Continued to original entry (translated by Google)