贝加尔湖冻结的甲烷气泡
(原标题: Methane Bubbles Frozen in Lake Baikal)
2024-12-29
浏览次数: 21
这些冻结在贝加尔湖上的气泡是什么？甲烷。贝加尔湖是联合国教科文组织在俄罗斯的世界遗产，是世界上最大（按体积计算）、最古老、最深的湖泊，拥有世界上20%以上的淡水。这个湖也是一个巨大的甲烷仓库，甲烷是一种温室气体，如果释放出来，可能会增加地球大气吸收的红外光量，从而提高整个星球的平均温度。幸运的是，目前冒出来的甲烷量在气候学上并不重要。目前还不清楚，如果该地区的气温显著升高，或者贝加尔湖的水位下降，会发生什么。照片中，上升的甲烷气泡在冬季结冰，形成了覆盖湖泊的异常清澈的冰。拼图挑战：当天的天文学难题
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What are these bubbles frozen into Lake Baikal? Methane. Lake Baikal, a UNESCO World Heritage Site in Russia, is the world's largest (by volume), oldest, and deepest lake, containing over 20% of the world's fresh water. The lake is also a vast storehouse of methane, a greenhouse gas that, if released, could potentially increase the amount of infrared light absorbed by Earth's atmosphere, and so increase the average temperature of the entire planet. Fortunately, the amount of methane currently bubbling out is not climatologically important. It is not clear what would happen, though, were temperatures to significantly increase in the region, or if the water level in Lake Baikal were to drop. Pictured, bubbles of rising methane froze during winter into the exceptionally clear ice covering the lake. Jigsaw Challenge: Astronomy Puzzle of the Day
© Kristina Makeeva