最近30从www.hoelymoley.com 2023 - 07 - 24 - t17:37:10z //www.hoelymoley.com/feeds/question/9745 https://creativecommons.org/licenses/by-sa/4.0/rdf //www.hoelymoley.com/q/9745 22 旋钮刮子 //www.hoelymoley.com/users/7333 2017 - 02年- 21 - t02:45:56z 2021 - 03 - 08 - t10:36:13z

< p >珠穆朗玛峰海拔8848米(29028英尺),是一个大陆板块的结果砸到另一个大陆板块。构造过程可以构建更高的山吗?(火山除外!)< / p > < p > < a href = " https://i.stack.imgur.com/MCnWk.jpg " rel = " noreferrer " > < img src = " https://i.stack.imgur.com/MCnWk.jpg " alt = "在这里输入图像描述" > < / > < / p >

//www.hoelymoley.com/questions/9745/-/9758 # 9758 17 江南体育网页版地球科学外籍 //www.hoelymoley.com/users/1149 2017 - 02年- 22 - t19:51:51z 2020 - 06 - 17 t07:09:57z

< p >发现一篇文章使用了一个简单的分析模型来确定多高的一座山。< a href = " https://talkingphysics.wordpress.com/2011/09/08/how-high-can-mountains-be/ " rel = " noreferrer " >引用< / > < / p > < p >基于简单的物理,地球上最高的一座山将~ 10公里。这是基于:< / p > < ul > <李>简单锥形状的山。≈卷< span class = " math-container " > $ r ^ 2 h $ < / span > < /李> <李>基于山的体重:体重W≈<跨类= " math-container " > \ρg r ^ 2 h美元< / span > < /李> <李> < p >应力σ山下面施加在地上:< / p > < p >σ≈≈重量/区域类< span = " math-container " >美元\ρg r ^ 2 h / r ^ 2 < / span >美元≈<跨类= " math-container " > \ρg h美元< / span > < / p > < /李> <李>的限制因素是岩石的抗压强度:假设花岗岩平均密度<跨类= " math-container " >ρ< / span >美元= 3 g / cm <跨类= " math-container " > $ ^ 3 $ < / span >。抗压强度是< span class = " math-container”> \ sigma_C < / span >美元= 200 MPa = <跨类= " math-container " > \ * 10 ^ 8 \ 2美元,N / m ^ 2美元< / span > < /李> <李>压力=岩石抗压强度σ= <跨类= " math-container " > \ sigma_C美元< / span >或<跨类= " math-container " > \美元ρg h_{马克斯}= \ sigma_C $ < / span >。李李< / > < > < p >计算最大高度:< / p > < p > <跨类= " math-container " >美元h_{马克斯}< / span >美元≈<跨类= " math-container " > \ sigma_C /(\ρg)美元< / span > < / p > < p > <跨类= " math-container " >美元h_{马克斯}< / span >美元≈<跨类= " math-container " > \美元压裂{2 \ * 10 ^ 8 \ N / m ^ 2}{3 \ * 10 ^ 3 ^ 3公斤/米\乘以10 \,m / s ^ 2)} < / span >美元≈<跨类= " math-container " > 10美元^ 4 \,m $ < / span > = 10公里< / p > < /李> < / ul >

//www.hoelymoley.com/questions/9745/-/10063 # 10063 13 cphlewis //www.hoelymoley.com/users/2639 2017 - 04 - 05 - t22:09:33z 2020 - 06 - 16 - t19:46:43z

< p >冰川圆锯假说(< a href = " https://www.newscientist.com/article/mg22430002 - 500 -冰-巴兹-看到-带-山- - - knees/”rel = " noreferrer " > < / >总结;< a href = " http://duff.ess.washington.edu/grg/publications/pdfs/QR2006_Mitchell.pdf " rel = " noreferrer " >样品纸< / >)是山不能获得远高于海拔冰川形成的圆环。上墙圆环的陡峭和侵蚀,这飞机上面的山峰,缩短山脉。证据是,总而言之,他们< em > < / em >不高于冰斗。冰斗高纬度地区是较低的。< / p > < p >最高的山会因此,我想象,是赤道附近,地方很干燥的冰川作用降到最低。但本质上非常高的山改变全球风和天气模式——喜马拉雅山有时被称作“第三极”。我不知道如果你< em > < / em >可以干,赤道附近的世界上最高的山,无论板块构造试图做什么。< / p > < p >新论文/摘要:Dielforder et al ., 2020, (< a href = " https://arstechnica.com/science/2020/06/plate-tectonics-vs-erosion-what-sets-the-height-of-a-mountain-range/ " rel = " noreferrer " > < / >总结;< a href = " https://www.nature.com/articles/s41586 - 020 - 2340 - 7”rel = " noreferrer " > < / >)做了一个分析/模拟构造的压力推高山区或南瓜(或地壳他们)降低自身的压力之下。 They find that the tectonic pressures alone predict mountain heights pretty well, without paying attention to climate/glaciation. This implies that mountains are just as tall as tectonics makes them -- if glaciation buzzes off the top, the tectonics just squeeze them up to the previous height. Various kinds of erosion would determine the shape of the mountain, but not its size.

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