pure and applied geophysics

, Volume 66, Issue 1, pp 77–86 | Cite as

The eccentric dipole

  • R. W. James
  • D. E. Winch


An up to date (1965) collection of the geometric parameters of the eccentric dipole is given and a new approach to the theory is introduced visualising the eccentric dipole as a superposition of multipoles. Formulae are also given for the determination of the theoretical north and south dip-poles.


Geometric Parameter Eccentric Dipole 


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  1. [1]
    A. Schmidt,Der magnetische Mittelpunkt der Erde und seine Bedeutung, Gerlands Beiträge für Geophysik41 (1934), 346.Google Scholar
  2. [2]
    J. Bartels,The eccentric dipole approximating the earth's field, Terr. Mag. and Elect.41, 3 (1936), 225.Google Scholar
  3. [3]
    S. Chapman andJ. Bartels,Geomagnetism II, O.U.P., (1962), 18.6.Google Scholar
  4. [4]
    E. H. Vestine On variation of the geomagnetic field, fluid motions and the rate of the earth's rotation, J. G. R.582 (1953), 127.Google Scholar
  5. [5]
    D. E. Winch andL. Slaucitajs,Geomagnetic multipoles, 1829 to 1960, P. and Appl. Geoph.63 (1966), 22.Google Scholar
  6. [6]
    B. R. Leaton, S. C. R. Malin andM. J. Evans,An analytical representation of the estimated geomagnetic field and its secular change for the epoch 1955.0, Jour. of Geom. and Geoelect.17, 3–4 (1965), 187.Google Scholar
  7. [7]
    E. C. Bullard,Is the earth's dipole moment increasing, J. G. R.58 (1953), 277.Google Scholar
  8. [8]
    H. G. Macht,On the increase in the earth's dipole moment, J. G. R.59 (1954), 369.Google Scholar
  9. [9]
    T. Rikitake,Electromagnetism and the earth's interiov, Elsevier (1966), P77, Developments in Solid Earth Geophysics 2.Google Scholar
  10. [10]
    E. C. Bullard, C. Freedman, H. Gellman andJ. Nixon The westward drift of the earth's magnetic field, Phil. Trans.A 243 (1950), 67.Google Scholar
  11. [11]
    N. P. Ben'kova, T. L. Vinnikova andL. O. Tyurmina,Geomagnetic eccentric dipole Geom. and Aer. IV5 (1964), 713.Google Scholar
  12. [12]
    N. V. Adam, N. P. Ben'kova, V. P. Orlov, N. K. Osipov andL. O. Tyurmina,Vertical distribution of the geomagnetic field, Geom. and Aer. IV4 (1964), 587.Google Scholar
  13. [13]
    E. W. Hobson,Theory of spherical and ellipsoidal harmonics. Chelsea N. Y., (1955), 129.Google Scholar
  14. [14]
    N. Umov,Die Konstruktion des geometrischen Bildes des Gaußschen Potentials, als Methode zur Erforschung der Gesetze des Erdmagnetismus, Terr. Mag. Atmos. Elect.9 (1904), 105.Google Scholar
  15. [15]
    D. E. Winch andL. Slaucitajs,Geomagnetic multipoles 1965.0, P. and Appl. Geoph.66 (1967) 1.Google Scholar

Copyright information

© Birkh#x00E4;user Verlag 1967

Authors and Affiliations

  • R. W. James
    • 1
  • D. E. Winch
    • 2
  1. 1.Joint Institute for Laboratory AstrophysicsThe University of ColoradoBoulderUSA
  2. 2.Department of Applied MathematicsThe University of SydneyAustralia

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