什么质心之间的距离和几何中心的地球(CM-CF抵消)?- 江南体育网页版- - - - -地球科学堆江南电子竞技平台栈交换 最近30从www.hoelymoley.com 2023 - 03 - 24 - t09:35:14z //www.hoelymoley.com/feeds/question/7673 https://creativecommons.org/licenses/by-sa/4.0/rdf //www.hoelymoley.com/q/7673 12 什么质心之间的距离和几何中心的地球(CM-CF抵消)? balping //www.hoelymoley.com/users/5623 2016 - 03 - 13 - t13:56:25z 2023 - 03 - 16 - t14:10:11z < p >在物理课件网站上我问同样的问题。我现在知道有几种类型的“中心”和我可以告诉,我感兴趣的CM-CF抵消(厘米= geocenter CF =图)的中心。< / p > < p > < a href = " http://www.ngs.noaa.gov/CORS/Articles/Geocenter-J-Geodyn2012.pdf " >吴,雷和van大坝,“Geocenter运动及其大地测量和地球物理意义,”< em >地球动力学杂志< / em > 58 (2012): 44 - 61。< / > < / p > < p >根据图2在上面的纸,我估计是9米的距离。然而这9米似乎对我来说太小了。除了它是关于< em > < / em > geocenter运动,但在他纵轴,它说“米”而不是“米/年”或“米/ 1000年”或类似的东西。在图5中,很明显,Δt = 1个月。但我不明白Δt图2。如果有的话…< / p > < p >我还发现本文< a href = " http://goo.gl/pPWD8l " > http://goo。gl / pPWD8l < / > 174页说,这抵消0.8公里。然而,1995年的数据,另一篇文章发表于2012年。

So I'm really confused now, I think I misunderstood something. I'm not a geophysicist, please help me out.

//www.hoelymoley.com/questions/7673/-/7733 # 7733 6 回答由DavePhD质心之间的距离和几何中心的地球(CM-CF抵消)? DavePhD //www.hoelymoley.com/users/248 2016 - 03 - 24 - t19:27:43z 2023 - 03 - 16 - t14:10:11z < p >之间没有矛盾2012年纸和年长的引用(s)。< / p > < p >无花果。任意2集的所有组件(x, y, z)所有的位移向量中心为零的开始时间(大约123000年前)。< / p > < p >另外2012条状态:< / p > < blockquote > < p >水平运动与板块运动有关的地形会改变CF。随着时间的推移,这些缓慢现象可以创建大的偏移量,到<强> < / >强数百米,厘米和CF之间。当内部负载合理推断的进化从其他来源,然后这些过程可以解释当前的一个重要散装厘米之间的静态偏移和CF。< / p > < /引用> < p > < a href = " https://books.google.com/books?id=stFpBgAAQBAJ& pg = PA556&液化石油气= PA556& dq =距离% 20 CF % 20, % 22中心20% % % 20厘米20图% % 20的22,源= bl& ots = 4 etlab_1dd&团体= Hj60t2cZXxtQivU9pA-bTbKApto& hl = en& sa = X& ved = 0 ahukewiwyqni_9nlahubsimkhbdoafgq6aeikdac # v = onepage& q = rcf& f = false”rel = " nofollow noreferrer " > < / >行星科学,表1.2,说CF和CM之间的距离是0.80公里,引用到< a href = " https://books.google.com/books?id=aqjU_NHyre4C& pg = PA13& dq =约% 20抵消% 20 earth& hl = en& sa = X& ved = 0 ahukewieqdovidrlahviwh4khyjob80q6aeiozae # v = onepage& q =图% 20 offset& f = false”rel = " nofollow noreferrer " >尤德1995 < / >。< / p > < p >参见< a href = " http://link.springer.com/article/10.1007%2FBF00578814 " rel = " nofollow noreferrer " >的证据在行星内部对流一阶月球地形< / > < em > < / em > 1973年3月,第七卷,172 - 180页< / p > < blockquote > < p >大家都知道有一段时间图存在抵消地球质量中心中心(例如杰佛利,1962)。从地球球面调和分析的地形和海洋取而代之的是岩石的等效质量,Balmino et al。(1972)发现流离失所的重心从人物的中心方向1.1公里长145°W, 42°S lat。< / p > < /引用>

And from the NASA memorandum Reports of planetary geology program - 1981:

For Earth, with its combination of sialic ([denisty]~2.7) and simatic ([density] 3.0-3.3) crusts, the CF is displaced toward 41.6°N, 34.7°E, in the direction of the Eurasian shield, and close to the center of the continental province at 46°N and 27°E (Bills and Ferrari, 1978).

See also Geocenter - Degree 1 :

The spherical harmonic coefficients of degree 1 represent the distance between the center of mass of the Earth and its 'center of figure', which in practice is the center of a set of tracking stations on the surface of the Earth. Because of their physical meaning, time changes in degree 1 coefficients can be expressed in several equivalent forms (1) as distances in mm along the Z (along the axis of rotation), X and Y axes; (2) as (fully normalized) coefficients of the geopotential; (3) as the changes in mass (per unit area) that would give rise to the geopotential coefficients, expressed either in kg/m^2 or cm of equivalent water thickness. The relation between these forms can be found in Swenson et al (2008), equations 5 and 4...

And Planetary Surface Processes (2011):

In fact, the Earth itself has a substantial center of mass – center of figure offset if the water filling the ocean basins is neglected. The floor of the Pacific Ocean is about 5 km below sea level, whereas the opposite hemisphere is dominated by the continental ... The waterless Earth's center of figure is thus offset from its center of mass by about 2.5 km at the present time.

//www.hoelymoley.com/questions/7673/-/24672 # 24672 3 的答案由罗伯特·McGrory质心之间的距离和几何中心的地球(CM-CF抵消)? 罗伯特McGrory //www.hoelymoley.com/users/28203 2022 - 12 - 25 - t20:09:55z 2022 - 12 - 25 - t20:09:55z < p > CM-CF抵消地球是2.1公里,是地球的重心由分析地球的重力势能,表示为一个有限的球函数的和。图的旋转几何中心是通过分析测高法或地形和深度测量法和计算地球的几何中心。是因为地球内部质量不均匀分布(如地幔岩石圈,动态取代岩石圈因为冰川均衡反弹等)。后来的扭曲地球的平衡形状从一个简单的球体。好书在这个问题上:由斯泰西和戴维斯剑桥出版社地球物理地球动力学Turcott和舒伯特剑桥新闻详情< / p > < p >这些参数是如何计算的警告:数学复杂性要求很高。< / p > < p > Wieczorek,硕士(2007年)。类地行星的重力和地形。在论述地球物理学(10卷,第206 - 165页)。英国牛津大学:爱思唯尔。< a href = " https://doi.org/10.1016/b978 - 044452748 - 6.00156 - 5”rel = " nofollow noreferrer " > https://doi.org/10.1016/b978 - 044452748 - 6.00156 - 5 < / > < / p >
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