每当提到“撒哈拉”,
我们的眼前就会出现
一幅无边无际的沙漠景观。
环境的秘密
第三组科学家研究了
过去24万年间西非海岸的沙尘,
得出了这样的结论:
撒哈拉和非洲北部的气候
每2万年就会随着
地轴倾斜的变化而
从湿润变成干燥。
生物的秘密
构造的秘密
[1] Skonieczny, C. & Paillou, Philippe & Bory, Aloys & Bayon, G. & Biscara, Laurie & Crosta, Xavier & Eynaud, F. & Malaizé, B. & Revel, M. & Aleman, Nicolas & Barusseau, J. & Vernet, Robert & Lopez, S. & Grousset, Francis. (2015). African humid periods triggered the reactivation of a large river system in Western Sahara. Nat Commun. 6. 10.1038/ncomms9751.
[2] Sallam, Hesham & Gorscak, Eric & O'Connor, Patrick & El-Dawoudi, Iman & El-Sayed, Sanaa & Saber, Sara & Kora, Mahmoud & Sertich, Joseph & Seiffert, Erik & Lamanna, Matthew. (2018). New Egyptian sauropod reveals Late Cretaceous dinosaur dispersal between Europe and Africa. Nature Ecology & Evolution. 2. 10.1038/s41559-017-0455-5.
[3] Sahara's Abrupt Desertification Started by Changes in Earth's Orbit, Accelerated by Atmospheric and Vegetation Feedbacks.
Ridddle、NASA、USGS、YouTube、维基百科、百度百科等
联系客服