Jääkuplia

Jääkuplia, meaning "ice bubbles" in Finnish, refers to a fascinating natural phenomenon observed in cold climates, particularly in lakes and rivers during winter. These formations occur when water freezes from the surface downwards. As the water freezes, dissolved gases within it, such as oxygen and carbon dioxide, are expelled and trapped within the ice.

The trapped gases form spherical or irregular-shaped bubbles that are suspended within the ice layers. The appearance of these ice bubbles can vary greatly depending on factors like the water's gas content, the speed of freezing, and the depth at which they are formed. In clear ice, the bubbles often appear as distinct, shimmering spheres, creating a visually striking effect.

Ice bubbles are a common sight on frozen bodies of water in regions experiencing sub-zero temperatures. They are not harmful and are a natural byproduct of the freezing process. Photographers often seek out locations with prominent ice bubbles, as they offer unique opportunities for capturing the beauty of winter landscapes. The formations themselves are temporary, eventually dissipating as the ice melts or breaks apart. Studying ice bubbles can provide insights into the water quality and the environmental conditions at the time of freezing.