As pressure increases, more gas is dissolved in the lake. ... Limnic eruption is a rare natural phenomenon, where a large amount of carbon dioxide gas is released from a deep lake, also known as lake overturn.

What causes limnic eruption?

Limnic eruptions can occur for two reasons. If the water becomes completely saturated with dissolved gases, any additional CO2 or methane injected into the lake will be forced to bubble out of solution, rise and be released into the air.

What happens during a limnic eruption?

We're talking about a limnic eruption. A limnic eruption is what happens when deadly gasses (like CO2) explode out of volcanic lakes. Sometimes the carnage unfolds on multiple fronts. Just as lethal clouds suffocate humans and animals, the abrupt displacement of water is liable to create tsunamis.