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是什么让海水管道的影响撒哈拉沙漠吗?

这是一个童年的梦想。

会发生什么如果管道安装(类似原则大人工河,但对于海水),不断注入海水撒哈拉沙漠。

假设一个精确的沙漠的位置,没有已知的含水层水位,被选为一个内部。假设野生动物在这个位置是微不足道的。和安装了太阳能电池板提供能量注入的水。,水被泵表面的地中海,预防措施被极大地损害海洋生物。

会有多难,说,一个内华达州大小的内在咸湖吗?也足够使潮湿空气,露——每晚倒在地上会开始绿化周期?

如果一个小泥添加到水沉淀到床上,将保留湖吗?

有任何修改这个幼稚的计划,这将使它,至少可以实现的吗?

回答

我看到三个问题要考虑,并将解决这些问题我认为相反的顺序的重要性:3)成本:你认为这与太阳能和试图用泥来减少渗透穿过湖床。好了,现在我们假设可以成本效益的方案。2)对环境的负面影响。你* *会渗透的盐水在地上,虽然你可能会减少。最终补给地下水的形成一个无侧限或表层含水层低渗透性沉积物。我的理解是,努比亚含水层主要局限除了充电南部较远的地方。所以盐水可能不会影响它除了在非常长的时间框架。努比亚含水层已经非常老水所以即使含有盐,可能需要很长时间到达灌区,人们不会担心。毕竟,他们本质上是挖掘新鲜的水,而不是试图匹配可持续产量。在一些地区地下水盐而不是可用了。 But these are things that would have to be addressed. I'm not sure that salt at the surface would be a significant problem. Much of Australia has ephemeral saline lakes at the surface that don't have major impacts (in my opinion) on the surrounding land when they are dry. But you are talking very large scale. I expect that the dry lake bed would stabilise with a sediment cover blowing in so salt dispersion would cease. 1) Would it work? I think it's a great idea but I'm skeptical. There are a lot of areas near the oceans where dew formation doesn't seem to produce significant amount of green vegetation. Well there are parts of Chile where dew is important in supporting the ecosystem, but that ecosystem is pretty unique and sparse. Not something that would support much human population. If I understand your question you are suggesting that the green vegetation would produce a feedback loop that promotes further dew or precipitation and becomes self sustaining. I can't say whether that could occur in some regions. If you look at the Great Artesian Basin of Australia, Lake Eyre and other very large lakes will fill with fresh water periodically and then go saline or even dry out. However, they haven't developed self-supporting vegetation, to my knowledge. The terrestrial plants rely on periodic rainfall due to storm tracks, generally from the west or north. If nothing else, thinking about it will teach you a lot about climate and weather. Hope this helps.

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