Sensitivity of the geomagnetic axial dipole to thermal core-mantle interactions

Nature

Volumn 405, Issue 6782, 2000, Pages 63-65

  Bloxham, Jeremy ^a  

^a HARVARD UNIVERSITY   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

CORE (PLANETARY); CORE-MANTLE BOUNDARY; EARTH ROTATION; GEODYNAMO; GEOMAGNETIC FIELD; PALEOMAGNETISM;

ARTICLE; AXIS; DIPOLE; GEOLOGY; HEAT TRANSFER; MAGNETIC FIELD; MATHEMATICAL MODEL; PRIORITY JOURNAL; ROTATION;

EID: 0034604080     PISSN: 00280836     EISSN: None     Source Type: Journal    
DOI: 10.1038/35011045     Document Type: Article

References (21)

1. Gilbert, W. De Magnete (London, 1600). Translation: Chiswick Press, London, 1900-1901).
2. McElhinny, M. & McFadden, P. Paleomagnetism (Academic, San Diego, 2000).
3. Kent, D. & Smethurst, M. Shallow bias of paleomagnetic inclinations in the Paleozoic and Precambrian. Earth Planet. Sci. Lett. 160, 391-402 (1998).
4. Irving, E. Paleomagnetic and paleoclimatological aspects of polar wandering. Geofisica Pura e Applicata 33, 23-41 (1956).
5. Evans, M. Test of the dipolar nature of the geomagnetic field throughout Phanetozoic time. Nature 262, 676-677 (1976).
6. McElhinny, M. & Lock, J. IAGA paleomagnetic databases with Access. Surv. Geophys. 17, 557-591 (1996).
7. Kuang, W. & Bloxham, J. An Earth-like numerical dynamo model. Nature 389, 371-374 (1997).
8. Buffett, B., Huppert, H., Lister, J. & Woods, A. On the thermal evolution of the Earth's core. J. Geophys. Res. 101, 7989-8006 (1996).
9. Cox, A. & Doell, R. Long period variations of the geomagnetic field. Bull. Seismol. Soc. Am. 54, 2243-2270 (1964).
10. Hide, R. Motions of the Earth's core and mantle, and variations of the main geomagnetic field. Science 157, 3784-3785 (1967).
11. Cox, A. The frequency of geomagnetic reversals and the symmetry of the nondipole field. Rev. Geophys. 13, 35-51 (1975).
12. Bloxham, J. & Gubbins, D. The secular variation of the Earth's magnetic field. Nature 317, 777-781 (1985).
13. Gubbins, D. & Bloxham, J. Morphology of the geomagnetic field and implications for the geodynamo. Nature 325, 509-511 (1987).
14. Bloxham, I. & Gubbins, D. Thermal core-mantle interactions. Nature 325, 511-513 (1987).
15. Zhang, K. & Gubbins, D. On convection in the Earth's core driven by lateral temperature variations in the lower mantle. Geophys. J. Int. 108, 247-255 (1992).
16. Zhang, K. & Gubbins, D. Convection in a rotating spherical fluid shell with an inhomogeneous temperature boundary condition at infinite prandtl number. J. Fluid Mech. 250, 209-232 (1993).
17. Sarson, G. R., Jones, C. A. & Longbottom, A. W. The influence of boundary region heterogeneities on the geodynamo. Phys. Earth Planet. Inter. 101, 13-32 (1997).
18. Bloxham, J. The effect of thermal core-mantle interactions on the paleomagnetic secular variation. Phil. Trans. R. Soc. Lond. A 358, 1171-1179 (2000).
19. Glatzmaier, G., Coe, R., Hongre, L. & Roberts, P. The role of the Earth's mantle in controlling the frequency of geomagnetic reversals. Nature 401, 885-890 (1999).
20. Giardini, D., Li, X.-D. & Woodhouse, J. Three-dimensional structure of the Earth from splitting in free-oscillation spectra. Nature 325, 405-411 (1987).
21. Gubbins, D. & Zhang, K. Symmetry properties of the dynamo equations for palaeomagnetism and geomagnetism. Phys. Earth Planet. Inter. 75, 225-241 (1993).