喀麦隆尼奥斯湖灾难四十周年纪念

1986年8月21日，喀麦隆西北地区的尼奥斯湖发生跛脚火山喷发，湖水突然释放大量积累于湖底的二氧化碳气体，造成约1700人和3500头牲畜死亡1。尼奥斯湖位于距首都亚温得约315公里处，湖底水深超过200米1。

这一事件并非首次警示。早在1984年8月15日，同地区的尼蒙湖已发生类似灾害，造成37人死亡1。鉴于尼奥斯湖的风险，科学家随后安装了排气管以逐步释放湖底积累的二氧化碳，防止再次发生大规模气体溢出1。然而，灾难留下的心理阴影至今仍困扰着幸存者1。当地的重建工作自2016年喀麦隆英语区危机爆发后更是举步维艰1。

Four decades have passed since one of Africa's most devastating natural disasters unfolded in northwestern Cameroon. On August 21, 1986, Lake Nyos suddenly released a massive volume of carbon dioxide gas, suffocating approximately 1,700 people and 3,500 livestock in the surrounding villages 1. The catastrophe, classified as a limnic eruption, occurred in a crater lake located over 315 kilometers northwest of Yaoundé 1.

The tragedy was not entirely unforeseen. Two years earlier, on August 15, 1984, Lake Oku, another crater lake in the region, had experienced a similar but less severe event that claimed 37 lives, serving as a precursor to the greater danger lurking beneath Lake Nyos's depths 1. Following the 1986 disaster, scientists installed degassing pipes to gradually release the carbon dioxide accumulating at the lake bottom, which extends beyond 200 meters deep 1. Yet despite these technical interventions, survivors remain deeply traumatized by the event 1. Recovery efforts in the affected region have been further hampered by the Anglophone crisis that erupted in Cameroon in 2016 1.