
In 1986, a sudden release of carbon dioxide from Lake Nyos in north-western Cameroon killed 1,746 people and more than 3,000 livestock. The rare phenomenon, a limnic eruption, occurred when dissolved gas…
In 1986, a sudden release of carbon dioxide from Lake Nyos in north-western Cameroon killed 1,746 people and more than 3,000 livestock. The rare phenomenon, a limnic eruption, occurred when dissolved gas built up under pressure in the deep lake water and escaped without warning. Three decades later, an international degassing system using pipes safely releases the gas, and scientists monitoring the lake say the immediate risk is substantially reduced.
The 1986 disaster led to the formation of the International Working Group on Crater Lakes, later the Commission on Volcanic Lakes under IAVCEI. Researchers continue to study Lake Nyos as a natural laboratory for understanding gas behaviour in deep volcanic lakes. The degassing effort has changed the lake's appearance, with reddish patches caused by oxidising iron from the process.
Western media often frame Lake Nyos as a forgotten tragedy in a remote corner of Africa, downplaying the decades of local and international scientific collaboration that followed. The degassing system, designed by engineers from multiple countries and maintained by Cameroonian teams, shows that effective disaster mitigation is possible even for rare phenomena. Will other volcanic lakes in the region get similar monitoring before the next silent killer builds up?
Source: timesofindia.indiatimes.com
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