A limnic eruption is a rare natural event where a deep lake, saturated with dissolved carbon dioxide, suddenly releases a massive, deadly gas cloud. The gas is maintained in solution by high pressure at the lake's depths until an external disturbance such as a landslide, earthquake, or volcanic trigger disrupts its stable layers and lowers the pressure, causing rapid degassing. As the carbon dioxide escapes, it forms a dense, heavy gas cloud that flows low over the landscape, suffocating wildlife and humans in its path. Scientists now use controlled degassing techniques to gradually release the trapped gas and prevent catastrophic eruptions, safeguarding lives and the ecosystem.
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