地球内部的热力发动机-地球科学堆栈交换江南电子竞技平台江南体育网页版

地球内部的热力发动机

2016 - 11 - 02 - t10:36:33z

地球内部热量引擎是什么? 做研究,我发现地球是太阳的外部热机。然而,当我做研究地球的内部热引擎,我收到多个答案。有多个回答这个问题吗?

kingledion回答的地球内部的热力发动机

2016 - 11 - 02 - t11:28:19z

For this question, Wikipedia is probably your best recourse.

To summarize, the heat in the earth's core comes from two places: it is left over from the formation of the earth and it is still being generated by radioactive decay of isotopes that were trapped in the earth as it formed.

The radiogenic heat is still being added to the earth through decay of long lasting isotopes. When the earth formed, there were probably many significant heat generating isotopes, but now after 4.5 billion years, it is pretty much just Thorium-232, Uranium-238, Potassium-40, and Uranium-235.

So there are multiple answers to this question in the sense that there are the two sources listed above, but otherwise, no, this is the answer.

This question has some more information related to heat transport to the surface that you may find relevant.

答案由戈登斯坦格对地球内部的热机

2016 - 11 - 27 - t03:15:31z

非专家很难理解地球的热量积聚。处理样品的铀或钍矿石,也就是地球内部放射性,你不会注意到任何热的岩石。放射性衰变的放热速率,但是是真实的和持续几十亿年了。为什么地球的核心一样热太阳表面是放射热已经无处可去。它是有效地锁定在由隔热毯数千公里厚——即。地幔。 研究中微子的来源表明,54%的地球当前的内部热量来自放射性衰变,剩下的46%是原始热,大概从最初的引力从太阳星云凝聚。