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地球形成和演化过程中的分异能计算方法研究

DOI: 10.6038/cjg20151009, PP. 3530-3539

Keywords: 重力分异,势能,分异能,吸积能,PREM

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Abstract:

地球形成初期,构成地球的物质在组成上是大致均一的.目前地球的地核-地幔-地壳圈层结构,是由分异作用形成的.分异过程释放的能量称为分异能.Sorokhtin和Chilingarian等人从行星吸积的定义出发,导出了基于地球内部密度分布的势能计算公式,计算出的分异能大小为1.698×1031J.本文采用计算球体势能的思路,导出分异能计算的解析公式和数值计算公式,通过求取原始地球模型与均匀分层模型、PREM模型的势能差计算分异能.两种方法的计算结果分别为1.535×1031J和1.698×1031J.前者与Sorokhtin等的结果相近,后者与之相同.本文初步分析了方法间的异同以及造成结果偏差的主要原因.

References

[1]  Dziewonski A M, Gilbert F. 1972. Observations of normal modes from 84 recordings of the Alaskan earthquake of 1964 March 28. Geophysical Journal International, 27(4): 393-446.
[2]  Dziewonski A M, Hales A L, Lapwood E R. 1975. Parametrically simple Earth models consistent with geophysical data. Physics of the Earth and Planetary Interiors, 10(1): 12-48.
[3]  Dziewonski A M, Anderson D L. 1981. Preliminary reference Earth model. Physics of the Earth and Planetary Interiors, 25(4): 297-356.
[4]  Flasar F M, Birch F. 1973. Energetics of core formation: A correction. J. Geophys. Res., 78(26): 6101-6103.
[5]  Jeffreys H, Singer S F. 2009. The Earth: Its origin, history and physical constitution. Physics Today, 12(9): 61-62.
[6]  Keondjian V P, Monin A S. 1977. Calculations on the evolution of the planetary interiors. Tectonophysics, 41(1-3): 227-242.
[7]  Lyubimov E A. 1968. Thermal Properties of the Earth and the Moon. Moscow: Nauka.
[8]  Martinec Z, Pěc K, Bura M. 1986. Normal density earth models. Studia Geophysica et Geodaetica, 30(2): 124-147.
[9]  Monteux J, Ricard Y, Coltice N, et al. 2009. A model of metal-silicate separation on growing planets. Earth and Planetary Science Letters, 287(3-4): 353-362.
[10]  Wang J H, Guo L, Wang J N, et al. 2010. The change of Earth oblateness in its history. Progress in Geophysics (in Chinese), 25(1): 143-150, doi: 10.3969/j.issn.1004-2903.2010.01.021.
[11]  Wang J H, Li X J, Zhang Y Y, et al. 2013. The lower limit of variation of the Earth''s oblateness in geological epoch. Chinese J. Geophys. (in Chinese), 56(3): 842-847, doi: 10.6038cjg20130313.
[12]  Wang J H, Zhang Y Y, Xin Z X, et al. 2012. Upper limit variation of the Earth''s Oblateness in geological epoch and impact analysis on the Dai Wensai''s Nebular Hypothesis. Geoscience (in Chinese), 26(6): 1168-1174.
[13]  Zhu Z X. 1980. Several hypotheses about the mantle and core formation. Chinese Journal of Nature (in Chinese), 3(11): 852-855, 810.
[14]  Zhu Z X. 1982. Some problems on the origin of the Earth. Acta Geophysica Sinica (in Chinese), 25(2): 172-180.
[15]  Anderson D L. 1989. Theory of the Earth. Boston, MA: Blackwell Scientific Publications, 366.
[16]  Barsukov V L. 1981. Outlines of Comparative Planetology. Moscow: Izd-vo Nauka, 184-185.
[17]  Birch F. 1965. Energetics of core formation. Journal of Geophysical Research, 70(24): 6217-6221.
[18]  Bolt B A. 1957. Earth models with continuous density distribution. Geophysical Journal International, 7(6): 360-368.
[19]  Bullen K E. 1938. Note on the density and pressure inside the Earth. Transactions and Proceedings of the Royal Society of New Zealand, 67: 122-124.
[20]  Bullen K E. 1965. Models for the density and elasticity of the Earth''s lower core. Geophysical Journal International, 9(2-3): 233-252.
[21]  Dai W S, Chen D H. 1976. Critical review of theories on the origin of the solar system. Acta Astronomica Sinica (in Chinese), 17(1): 93-105.
[22]  Dai W S, Hu Z W. 1979. On the origin of the asteroids. Acta Astronomica Sinica (in Chinese), 20(1): 33-42.
[23]  Dai W S, Hu Z W. 1980. On the origin of the solar system. Science China (in Chinese), (3): 254-266.
[24]  Dmitriyev L V. 1973. Mid-Oceanic ridge bedrock geochemistry and petrology. Moscow: Moscow University, 45.
[25]  Naimark L M, Sorokhtin O G. 1977a. Energy of Earth''s Gravity Differentiation. Tectonics of Lithospheric Plates, 42-56.
[26]  Naimark L M, Sorokhtin O G. 1977b. The density distribution in the Earth''s model with the herzolite mantle composition and iron oxide core. Tectonics of Lithospheric Plates, 28-41.
[27]  Ringwood A E. 1966. The chemical composition and origin of the Earth. Advances in Earth Science, 276-356.
[28]  Ronov A B, Yaroshevsky A A. 1978. Chemical Composition of the Earth''s Crust and of her Shells. Moscow: Tectonosphere of Earth, Nedra, 376-402.
[29]  Rubie D C, Nimmo F, Melosh H J. 2007. Formation of Earth''s core.//Schubert G ed. Treatise on Geophysics. Oxford: Elsevier, 51-90.
[30]  Schmidt O Y. 1957. Four Lectures on the Theory of the Origin of the Earth. Izd-vo AN SSSR.
[31]  Solomon S C. 1979. Formation, history and energetics of cores in the terrestrial planets. Physics of the Earth and Planetary Interiors, 19(2): 168-182.
[32]  Sorokhtin O G, Chilingarian G V, Sorokhtin N O. 2010. Evolution of Earth and Its Climate: Birth, Life and Death of Earth. St. Louis, MO: Elsevier, 160-164.
[33]  Teng J W. 2003. Introduction to Solid Geophysics (in Chinese). Beijing: Earthquake Press, 80-91.
[34]  Urey H C, Craig H. 1953. The composition of the stone meteorites and the origin of the meteorites. Geochimica et Cosmochimica Acta, 4(1-2): 36-82.
[35]  Vityazev A V. 1973. On the energy of gravitational differentiation in the Earth. Izv. Akad. Nauk SSSR, Ser. Fiz. Zemli, (10): 86-88.

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