Abstract
Models of the magnetic field at the core–mantle boundary at selected epochs from 1715.0 to 1980.0 reveal novel features in the field at the core. These suggest that the flow of core fluid is coupled to the mantle, and that magnetic diffusion is significant.
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Needham, J. Science and Civilisation in China Vol. 4 Part 1 (Cambridge University Press, 1962).
Barraclough, D. R. Phil. Trans. R. Soc. A306, 71–78 (1982).
Halley, E. Phil. Trans. R. Soc. 13, 208–221 (1683).
Halley, E. Phil. Trans. R. Soc. 16, 563–578 (1692).
Bullard, E. C., Freedman, C., Gellman, H. & Nixon, J. Phil Trans. R. Soc. A243, 67–92 (1950).
Hide, R. Phil. Trans. R. Soc. A259, 615–647 (1966).
Busse, F. H. Geophys. Astrophys. Fluid Dynam. 21, 129–141 (1982).
Le Mouël, J. L. Nature 311, 734–735 (1984).
Nagata, T. Proc. Benedum Earth Magnetism Symp. 39–55 (Pittsburg: Univ. Pittsburg Press, 1962).
Yukutake, T. & Tachinaka, H. Bull. Earthquake Res. Inst. Tokyo 46, 1027–1074 (1968).
Yukutake, T. & Tachinaka, H. Bull. Earthquake Res. Inst. Tokyo 47, 65–97 (1969).
James, R. W. J. Geomagn. Geoelectr. 22, 241–252 (1970).
Fisk, H. W. Bull. Inst. Geodetic Geophys. Un. 8, 280–292 (1930).
Doell, R. R. & Cox, A. Nature 192, 645–646 (1961).
Doell, R. R. & Cox, A. J. geophys. Res. 68, 1997–2009 (1963).
Cox, A. & Doell, R. R. Bull. seism. Soc. Am. 54, 2243–2270 (1964).
Doell, R. R. & Cox, A. J. geophys. Res. 70, 3377–3405 (1965).
Doell, R. R. & Cox, A. Science 171, 248–254 (1971).
Doell, R. R. J. geophys. Res. 77, 2129–2138 (1972).
Doell, R. R. J. geophys. Res. 77, 3725–3730 (1972).
Doell, R. R. & Cox, A. in The Nature of the Solid Earth (ed. Robertson, E. C.) 245–284 (McGraw-Hill, New York, 1972).
Bingham, D. K. & Stone, D. B. Geophys. J. R. astr. Soc. 28, 337–355 (1972).
McWilliams, M. O., Holcomb, R. T. & Champions, D. E. Phil. Trans. R. Soc. A306, 211–2222 (1982).
Cox, A. J. Geomagn. Geoelectr. 13, 101–112 (1962).
Roberts, P. H. & Scott, S. J. Geomagn. Geolectr. 17, 137–151 (1965).
Kahle, A. B., Ball, R. H. & Vestine, E. H. J. geophys. Res. 72, 1095–1108 (1967).
Kahle, A. B., Ball, R. H. & Vestine, E. H. J. geophys. Res. 72, 4917–4925 (1967).
Vestine, E. H., Ball, R. H. & Kahle, A. B. J. geophys. Res. 72, 4927–4937 (1967).
Backus, G. E. Phil. Trans. R. Soc. A263, 239–266 (1968).
Gubbins, D. Phil. Trans. R. Soc. A306, 247–254 (1982).
Madden, T. & Le Mouël, J.-L. Phil. Trans. R. Soc. A306, 357–364 (1982).
Voorhies, C. V. thesis, Univ. Colorado (1984).
Le Mouël, J.-L., Gire, C. & Madden, T. Preprint Geophys. J. R. astr. Soc. (in the press).
Braginskii, S. I. Geomagn. Aeron. 12, 464–468 (1972).
Braginskii, S. I. & Kulanin, N. V. Geomagn. Aeron. 11, 786–788 (1971).
Yukutake, T. J. Geomagn. Geoelectr. 23, 11–31 (1971).
Barraclough, D. R. Geophys. J. R. astr. Soc. 36, 497–513 (1974).
Barraclough, D. R. & Thompson, R. J. Geomagn. Geolectr. 34, 245–263 (1982).
Veinberg, B. P. & Shibaev, V. P. The Results of Magnetic Determinations at Equidistant Points and Epochs, 1500-1940 (IZMIRAN, Moscow, 1969).
Gauss, C. F. Göttingen Comment 8, 3–44 (1833).
Kono, M. J. Geomagn. Geolectr. 28, 11–29 (1976).
Shure, L., Parker, R. L. & Backus, G. E. Phys. Earth planet. Inter. 28, 215–229 (1982).
Jackson, D. D. Geophys. J. R. astr. Soc. 57, 131–157 (1979).
Gubbins, D. & Bloxham, J. Geophys. J. R. astr. Soc. 80, 695–713 (1985).
Sabine, E. Phil. Trans. R. Soc. 158, 371–416 (1868).
Sabine, E. Phil. Trans. R. Soc. 160, 265–275 (1870).
Sabine, E. Phil. Trans. R. Soc. 162, 353–433 (1872).
Sabine, E. Phil. Trans. R. Soc. 165, 161–203 (1875).
Sabine, E. Phil. Trans. R. Soc. 167, 461–508 (1877).
Bloxham, J. & Gubbins, D. Geophys. J. R. astr. Soc. 83 (in the press).
Langel, R. A. & Estes, R. H. Geophys. Res. Lett. 9, 250–253 (1982).
Meyer, J., Hufen, J.-H., Siebert, M. & Hahn, A. J. geophys. 52, 71–84 (1983).
Hahn, A., Ahrendt, H., Meyer, J. & Hufen, J.-H. Geol. Jb.; Hanover 75, 125–156 (1984).
LaBrecque, J. L. & Raymond, C. A. J. geophys. Res. 90, 2565–2575 (1985).
Vestine, E. H. Proc. natn. Acad. Sci. U.S.A. 38, 1030–1038 (1952).
Booker, J. R. Proc. R. Soc. A309, 27–40 (1969).
Benton, E. R. Geophys. Astrophys. Fluid Dynam. 18, 157–174 (1981).
Allan, D. W. & Bullard, E. C. Proc. Camb. phil. Soc. 62, 783–809 (1966).
Nagata, T. & Rikitake, T. J. Geomagn. Geolectr. 13, 42–53 (1961).
Rikitake, T. J. Geomagn. Geoelectr. 19, 129–142 (1967).
Gubbins, D., Thomson, C. J. & Whaler, K. A. Geophys. J. R. astr. Soc. 68, 241–251 (1982).
Whaler, K. A. Nature 287, 528–530 (1980).
Whaler, K. A. thesis, Univ. Cambridge (1981).
Whaler, K. A. Phil. Trans. R. Soc. A306, 235–246 (1982).
Hide, R. & Malin, S. R. C. Nature 225, 605–609 (1970).
Hager, B. H., Clayton, R. W., Richards, M. A., Comer, R. P. & Dziewonski, A. M. Nature 313, 541–545 (1985).
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Bloxham, J., Gubbins, D. The secular variation of Earth's magnetic field. Nature 317, 777–781 (1985). https://doi.org/10.1038/317777a0
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DOI: https://doi.org/10.1038/317777a0
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