观看北极的海冰慢慢消失
包括视频
根据新的研究,北极的最古老和最厚的冰比北极地区的其余部分更加手机,而且消失了两倍。研究人员已经确定了他们称之为最后的冰区,格陵兰西北地区是一座200公里的海洋,北极夏季海冰可能会在几十年内生存。
据报道地球物理研究字母,a biweekly peer-reviewed scientific journal of geoscience published by the American Geophysical Union, sea ice coverage in the Arctic Ocean has declined, on average, by more than one-third from 1984 through 2018. Only in two portions of the last ice area – one patch immediately north of Greenland, and another swath centred more than 1,300 kilometres to the west along Canada’s northernmost islands – does near-total sea-ice coverage persist from year to year, the researchers say.
与其他北冰洋的其余部分不同,这两个地区的冰厚度最多约为4米。最近的分析还揭示了冰损失在北冰洋其他地方的比率下发生了两倍。科学家说,这两个持久的海冰的持久性海冰可能是最终依赖于海冰的野生动物,如北极熊,海象,以及北部的北部熊,如北极熊,可以在一个温暖的世界中掌握。
(图片信用:NASA / JPL-CALTECH)