What is pancake ice?

Pancake ice is a fascinating type of sea ice that forms in open water, often in rough seas. Here's what makes it unique:

Formation:

* Freezing: It starts with small, thin pieces of ice, usually called "frazil ice." These tiny ice crystals form in the water, freezing onto existing ice or forming on their own.

* Wave Action: The waves then churn and toss these pieces, causing them to collide and grow in size.

* Rounded Shapes: The collisions and constant movement result in the ice pieces becoming smooth and rounded, resembling pancakes.

Characteristics:

* Size: Pancake ice can range in size from a few inches to several feet in diameter.

* Thickness: The ice is typically thin, rarely exceeding a few inches.

* Appearance: The smooth, circular shape is the hallmark of pancake ice. They can be white, gray, or bluish in color depending on the light and the conditions.

Importance:

* Sea Ice Formation: Pancake ice acts as a stepping stone in the formation of larger sea ice sheets.

* Ecosystem Influence: The movement of pancake ice can create unique habitats for marine life, like fish and seals.

* Navigation: Large pancake ice fields can pose a hazard to marine navigation, especially for smaller vessels.

Location:

Pancake ice is commonly found in polar regions like the Arctic and Antarctic, but it can also form in other cold waters, like the Great Lakes.

Intriguing Fact:

* Pancake ice can make a distinctive "clinking" sound as it bumps against other pieces, creating a unique symphony in the cold waters.

Let me know if you want to explore any of these aspects further!