GRAVITY ANOMALIES OF THE MOON

DOI: 10.24057/2414-9179-2015-1-21-514-521

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About the Authors

S. G. Pugacheva

Sternberg Astronomical Institute Moscow University Moscow, Russia
Russian Federation

V. V. Shevchenko

Sternberg Astronomical Institute Moscow University Moscow, Russia
Russian Federation

Abstract

The source of gravity anomalies of the Moon are large mascons with a high mass concentration at a depth of volcanic plains and lunar Maria. New data on the gravitational field of the Moon were obtained from two Grail spacecrafts. The article presents the data of physical and mechanical properties of the surface soil layer of the lunar Maria and gives an assessment of the chemical composition of the soil. There have been calculated heterogeneity parameters of the surface macro-relief of the lunar Maria: albedo, soil density, average grain diameter of the particles forming the surface layer and the volume fraction occupied by particles. It can be assumed that mascons include rich KREEP rocks with a high content of thorium and iron oxide. Formation of mascons is connected with intensive development of basaltic volcanism on the Moon in the early periods of its existence.

Keywords

Moon, gravity anomalies, macro-relief, heterogeneity parameters, chemical composition

References

  1. Apollo 11 Preliminary Scince Report, 1969, NASA SP-214, 47.
  2. Apollo 12 Preliminary Scince Report, 1970, NASA SP-235, 126.
  3. Gillis J.J., Jolliff B.L., Korotev R.L. Lunar surface geochemistry: Global concentrations of Th, K, and FeO as derived from lunar prospector and Clementine data // Geochimica et Cosmochimica Acta, 2004, Volume 68, Issue 18, p. 3791–3805.
  4. Hapke B. Theory of reflectance and emittance spectroscopy. Cambridge university press. 2005. 455 p.
  5. Harald H., Jauman R., Newkum G. Ages of mare basalts on the lunar nearside // Journal of geophysical research, 2000, V. 105, No. E12, p. 239–275.
  6. Head J. W., Wilson L. Lunar mare volcanism: Stratigraphy, eruption conditions and the evolution of secondary crusts // Geochimica et. Cosmochimica. Acta, 1992, Issue 14, Volume 56, p. 2155–2175.
  7. Lawrence D.J., Elphic R.C., Feldman W.C., Gasnault O., Hagerty J.J., Maurice S., Prettyman T.H. The Lunar Prospector Gamma-Ray and Neutron Spectrometers: Overview of Lunar Global Composition Measurements // Journal of Geophysical Research, 105,2005, No. E8, 20,307-20,331.
  8. Мобильная лаборатория на Луне Лунаход-1 // 1987, Том 11, М., Наука, 121 с.
  9. Mobile Laboratory on the Moon Lunakhod-1, 1978, Vol. II, M.: Nauka, 121 p. (in Russian).
  10. Melosh H.J. Freed A.M., Johnson B.C. The Origin of Lunar Mascon Basins // Science, 2013, Volume 340, Issue 6140, pp. 1552–1555.
  11. Muller P.M., Sjogren W.l. Lunar gravimetry and mascons. // Appl. Mech. Revs., 1969, v.22, N 3, p. 955–959.
  12. Racca G.D., Foing B.H. Geophysical Research Abstracts // 2002, 4, Abstract A-01152.
  13. Сагитов М.Н. Лунная гравиметрия. М.: «Наука», 1979, 403 с.
  14. Sagitov M.N. Lunargravimetry. M.: ‘Nauka’, 1979, 403 c. (in Russian).
  15. Шевченко В.В. Современная селенография, М.: «Наука», 1980, 288 с.
  16. Shevchenko V.V.The modern selenography, M.: ‘Nauka Press’, 1980, 288 р. (in Russian).
  17. Shevchenko V.V., Pinet P., Chevrel S., Pugacheva S.G., Daydou Y. Lunar photometry and composition of ejecta terrains with AMIE/SMART-1 // Proc. 38th Vernadsky-Brown Microsymp., M.: 2003,C.1112–1113.
  18. Шевченко В.В., Бусарев В.В., Сурдин В.Г. Физические условия вблизи Луны и планет Солнечной системы// Сборник «Модель космоса», 2007,М.: «КДУ», том 3, С. 794–861.
  19. Shevchenko V.V., Busarev V.V., Surdin B.G. The Physical conditions beside the Moon and planets of the Solar system // 2007, M.: “KDU”, Vol. 3, C. 794–861. (in Russian).
  20. Y. Lu, J. Ping, V. Shevchenko. New Lunar Lander Site Selection // The fourth Moscow Solar System Symposium (4M-S3), 2013, M.
  21. Wieczorek M.A., Huang S.A. reanalysis of Apollo 15 and 17 surface and subsurface temperature series // 37th Annual Lunar and Planetary Conference, March 13–17, 2006, League City, Texas, abstract no. 1682.

For citation: Pugacheva S.G., Shevchenko V.V. GRAVITY ANOMALIES OF THE MOON. Proceedings of the International conference “InterCarto. InterGIS”. 2015;21:514–521 DOI: 10.24057/2414-9179-2015-1-21-514-521 (in Russian)