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假设地球会发生什么,如果一个大洞是通过中心钻的吗?

这可能是一个稍微不寻常的问题。我知道它不可能,但短期和长期的影响是,如果一个大型(1英里直径)圆孔出现,径直穿过地球的中心,通过双方的外壳。会不同,如果他们打开在陆地上,而不是海洋?

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最好的地方在xkcd问这个问题将会是:http://what-if.xkcd.com/但我会试试看。我不是一个地球物理学家,但我会尝试给你一个合理的答复。正如你所说,这样的孔是不可能的。然而,让我们来试试,如果一些神奇的力量1公里宽挖了一个洞,然后突然释放它。这是地球是什么做的![地球][1](来自:http://www.nature.com/nature/journal/v479/n7374/fig_tab/479480a_F1.html)最容易的解释将在核心看看会发生什么。内外核心都基本上不纯铁做的。液体的铁就会流入本身并关闭洞很快在水)(考虑一个类似的洞。固态铁也是韧性有很高的压力和温度,因此它也会流并关闭洞。认为巧克力接近熔化温度。它仍然是固体,但它移动。 Probably some of the liquid iron will manage to flow into the hole of the solid iron, but it will then solidify because it will have to endure higher pressures. Now, what happens at the mantle? The lower mantle is also ductile and it will also flow under the pressure. You have to remember the the walls of the hole are under huge pressures - 24 to 136 GPa according to the figure. Some things may "fall inside", but remember that it has to fall over hundreds of kilometers while the hole is only 1 km wide. The upper mantle is where it becomes interesting. This is just thinking out loud though. The upper mantle is where magmas are being formed, and one of the reasons magma is formed is decompression. Usually this happens because of mid ocean spreading or mantle plumes, but removing one side of let's say a cube of rock is also going to decompress it somewhat. This may cause generation of magma. No worries though - I don't see any reason why it should rise to the surface. If anything at all, it's going to fall down through the hole (but not much, see above). Also, decompression may cause release of volatiles or gas, the most common being CO2 and H2O I guess, also H2S or SO2 depends exactly what is down there. Also, the movement of rocks in an area of the Earth that's not ductile anymore but rather brittle ([lithosphere][2]) is sure to cause some earthquakes. Are there earthquakes going to be dangerous for anyone? I don't know. What would this hole look like if you peeked down? My guess that it will be filled with water. If this hole starts at the ocean, then the ocean will just flow inside and fill it. It is possible that some mega waves or tsunamis will accompany it. It will pour down until it either meets the closed rock, or just evaporates. Remember - it's pretty hot down there. It will evaporate and rise, then cool and starts raining down again and you will have a nice convective cell in the upper few kilometers of this hole. In contrast, if this was not in the ocean but rather on land, groundwater will fill it in. I guess most of the earth has groundwater (maybe except the large deserts, but even there some water exists) that will just flow inside and create a similar convective cell. [1]: http://i.stack.imgur.com/ast8H.jpg [2]: https://en.wikipedia.org/wiki/Lithosphere "Lithosphere"

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\ begingroup美元的内在核心是固体,因为压力。不会这样的释放导致它减压,并迅速填补这个洞,甚至从地壳? \ endgroup美元
- - - - - -j·穆瑟
2014年9月10日18:01
1

\ begingroup美元不是真的。你的洞是用整个代码相比可以忽略不计。它只会流填补这个洞。认为持有某种缸在一个游泳池,然后迅速拉出来。所有的水的压力是因为在所有的池。不在乎你的缸。只是流填入洞。 \ endgroup美元
- - - - - -Gimelist
2014年9月10日18:06
\ begingroup美元但是地球是在高压下,与池。我比较更像高压水箱。把一个非常小的洞(可以忽略),和压力会消散。 \ endgroup美元
- - - - - -j·穆瑟
2014年9月10日18:08
\ begingroup美元高压水箱是“高压”,因为它有一个锋利的边界与低压气氛。在地球上,没有锋利的压力边界。但假设它消散。它去哪里?向上?它将被封锁的铁水流动更快。在任何情况下任何深度的固体或液体物质到达地球的表面。 \ endgroup美元
- - - - - -Gimelist
2014年9月10日,在18:19
\ begingroup美元好了,这是有意义的。 \ endgroup美元
- - - - - -j·穆瑟
2014年9月10日,在23

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