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The moon

, Volume 1, Issue 3, pp 339–346 | Cite as

Convection in the mantle and its effect upon the earth's gravitational field

  • David G. Ashworth
Article
  • 19 Downloads

Abstract

The failure of an equilibrium model to provide an adequate representation of the Earth's external gravitational field suggests that one should consider a more general hydrodynamical model for the interior of the terrestrial globe, and the most probable cause of motion, which may significantly effect the distribution of density inside the Earth, is convection throughout the mantle. In the present paper we investigate the effects of convection in the mantle on the gravitational field of the Earth and calculate the velocity of convection necessary to account for the observed characteristics of the external gravitational field.

Keywords

Convection Gravitational Field Equilibrium Model Hydrodynamical Model Adequate Representation 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. Ashworth, D. G.: 1969, ‘The Combined Effect of Thermal and Nonthermal Convection in Planetary Mantles’,Icarus 10, 26.Google Scholar
  2. Ashworth, D. G.: 1970, ‘The Dependence of Convection in Planetary Mantles upon the Magnitude of the Rayleigh Number’,The Moon (in press).Google Scholar
  3. Bullen, K. E.: 1940,Bull. Seismol. Soc. Am. 30, 235.Google Scholar
  4. Bullen, K. E.: 1942,Bull. Seismol. Soc. Am. 32, 19.Google Scholar
  5. Hagihara, Y.: 1962,Astron. J. 67, 108.Google Scholar
  6. King-Hele, D. G. and Cook, G. E.: 1965, ‘The Even Zonal Harmonics of the Earth's Gravitational Potential’,Geophys. J. 10, 17.Google Scholar
  7. King-Hele, D. G., Cook, G. E., and Scott, Diana W.: 1965, ‘The Odd Zonal Harmonics in the Earth's Gravitational Potential’,Planetary Space Sci. 13, 1213.Google Scholar
  8. King-Hele, D. G., Cook, G. E., and Scott, Diana W.: 1967, ‘Odd Zonal Harmonics in the Geopotential, Determined from Fourteen Well-Distributed Satellite Orbits’,Planetary Space Sci. 15, 741.Google Scholar
  9. Kopal, Z.: 1960,Figures of Equilibrium of Celestial Bodies, University of Wisconsin Press, Madison, Wis.Google Scholar
  10. Kopal, Z.: 1963, ‘The Effects of Convection in the Mantle and the Gravitational Field of the Earth’,Mém. Soc. Roy. Sci. Liège (v)7, 29.Google Scholar
  11. Kopal, Z. and James, R.: 1963, ‘The Equilibrium Figures of the Earth and of the Major Planets’,Icarus 1, 442.Google Scholar
  12. Runcorn, S. K.: 1962, ‘Towards a Theory of Continental Drift’,Nature 193, 311.Google Scholar
  13. Vening Meinesz, F. A.: 1952, inProc. Koninkl. Ned. Akad. Wetenschap. B55, 527.Google Scholar
  14. Wasiutynski, J.: 1946, ‘Studies in Hydrodynamics and Structure of Stars and Planets’,Astrophys. Norwegica 4, 254ff., 284ff.Google Scholar

Copyright information

© D. Reidel Publishing Company 1970

Authors and Affiliations

  • David G. Ashworth
    • 1
  1. 1.University of KentCanterburyEngland

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