Springer Nature is making SARS-CoV-2 and COVID-19 research free. View research | View latest news | Sign up for updates

On geophysical explanation of some irregular variations of the mean latitudes of latitude stations

  • 25 Accesses

  • 5 Citations

Abstract

Mean latitude variations computed by Orlovs or other filters have some irregular variations in addition to secular ones. These are of the order of ±0.05 to ±0.1, they can last several years and sometimes show regional similarities. In looking for an explanation of such latitude variations several physical mechanisms have been investigated. The most probable one is the mechanism of stress propagation in the lithosphere and asthenosphere. The consequent gravitational and deformational effects could explain both the magnitude and the time dependance of the irregular latitude variations.

This is a preview of subscription content, log in to check access.

References

  1. BIH (1968), Annual Report, Paris.

  2. Czechowski L. (1980),The evolution of a convection cell in the Earth's mantle. Acta Geophys. Pol. XXVIII, no. 4, 325–334.

  3. Czechowski, L., Kołaczek, B. (1983),On geophysical explanation of some irregular variations of mean latitude stations. IAG Programme and abstracts, XVIII IUGG General Assembly, Hamburg, FRG, p. 36.

  4. Feissel, M., Lewandowski, W. (1984),A comparative analysis of Vondrak and Gaussian smoothing techniques. Bull. Geod. Vol.58, pp. 464–474.

  5. Fedorov, E. P., Korsuń, A. A., Major, C. P., Pantschenko, N. I., Taradij, W. K. andYatskiv, J. S. (1972),Polar Motion from 1890.0 to 1969.0, (in Russian), Publication Company NAUKOWA DUMKA, Kiev, USSR.

  6. Galas, R. (1977),On the mean latitude determination, Publications Institute of Higher Geodesy and Geodetical Astronomy (since 1970) of the Warsaw Technical University (before 1970, Chair of Geodetic Astronomy), New series No 9, Warsaw.

  7. Garland, G. D. (1956),Gravity and Isostasy. in Handbuch der Physik47, (S. Flügge ed.), pp. 202–245.

  8. Hadara, T. andShimura, M. (1979),Horizonatal deformation of the crust in western Japan, Tectonophys,52, 469–478.

  9. Hastie, L. M. andSavage I. C. (1970),A dislocation model for the 1964 Alaska earthquake. Bull. Seism. Soc. Am.60, 1389–1392.

  10. Houston, M. H. Jr. andDe Bremaecker, J. C. (1975),Numerical models of convection in the upper mantle. J. Geophys. Res.80, 742–751.

  11. Jaeger, J. G. andCook, N. G. W. (1969),Fundamentals of rock mechanics. Methuen and Co. Ltd, London.

  12. Kołaczek, B. Galas, R. Barlik, Dukwicz, M. (1980),Variations of differences of latitudes and of mean latitudes of stations located in the vicinity of a common meridian. In Proc. of the IAU Symp. No. 78 on ‘Nutation and the Earth's Rotation’, eds.E. P. Fedorov, M. L. Smith andP. L. Bender, D. Reidel Publ. Co., pp. 211–221.

  13. Kołaczek, B. (1980),On influence of mean latitude variations into the polar motion determined by astronomical observations. Proc. the scientific conference on ‘Investigations of the Earth's as planet by the methods of astronomy, geodesy and geophysics’, (in Russian), Kiev, USSR.

  14. Kołaczek, B. andTeleki, G. (1982),On investigation of mean latitude variations. In Sun and Planetary System, eds.W. Fricke andG. Teleki, D. Reidel Publ. Co., 191–194.

  15. Lehner, F. K., Li, V. C. andRice, J. R. (1981),Stress diffusion along rupturing plate boundaries. J. Geophys. Res.86, B7, 6155–6169.

  16. Leliwa-Kopystyński, J., andTeisseyre, R. (eds.) (1984),Constitution of the Earth's interior. Elsevier, Amsterdam.

  17. Le Pichon, X., Franchetau, J. andBonnin, J. (1973),Plate Tectonics, Elsevier Sci. Publ. Co., Amsterdam.

  18. Rice, J. R. (1980),The mechanics of earthquake rupture. In Physics of the Earth's Interior, ed. byA. M. Dziewoński andE. Boschi, Italian Phys. Soc., printed by North Holland Publ. Co., pp. 555–649.

  19. Richter, C. F. (1958),Elementary seismology, W. H. Freeman Publ. Co., USA.

  20. Solomon, S. C. (1976),Geophysical constraints on radial and lateral temperature variations in the upper mantle. Am. Mineralogist61, 788–803.

  21. Solomon, S. C., Sleep, N. H., andJurdy, D. M. (1977),Mechanical models for absolute plate motions in early Tertiary. J. Geophys. Res.82, 203–212.

  22. Uhink, W. (1967),Zur Definition der mittleren Polhode. Arbeiten aus dem Geodatischen Institut Potsdam16.

  23. Yumi, S. andYokoyama, K. (1980),Results of the International Latitude Service in a Homogeneous System. IPMS, Mizusawa, Japan.

Download references

Author information

Rights and permissions

Reprints and Permissions

About this article

Cite this article

Czechowski, L., Kolaczek, B. On geophysical explanation of some irregular variations of the mean latitudes of latitude stations. PAGEOPH 123, 398–406 (1985). https://doi.org/10.1007/BF00880739

Download citation

Key words

  • Geophysical explanation
  • Ireegular variations
  • Mean latitudes
  • Stress propagation