Intense equatorial flux spots on the surface of the Earth's core

Nature

Volumn 424, Issue 6950, 2003, Pages 760-763

  Jackson, Andrew ^a  

^a UNIVERSITY OF LEEDS   (United Kingdom)

Author keywords

[No Author keywords available]

Indexed keywords

EARTH (PLANET); MAGNETIC FLUX; MORPHOLOGY; SATELLITES;

EQUATORIAL REGIONS;

GEOMAGNETISM;

CORE (PLANETARY); GEOMAGNETIC FIELD; SATELLITE DATA;

ARTICLE; ASTRONOMY; ENTROPY; GEOGRAPHY; IMAGE ANALYSIS; MAGNETIC FIELD; MATHEMATICAL ANALYSIS; MEASUREMENT; MODEL; PRIORITY JOURNAL;

EID: 0041967153     PISSN: 00280836     EISSN: None     Source Type: Journal    
DOI: 10.1038/nature01879     Document Type: Article

References (22)

1. Backus, G. E., Parker, R. & Constable, C. Foundations of Geomagnetism (Cambridge Univ. Press, Cambridge, 1996).
2. Bloxham, J. & Gubbins, D. The secular variation of Earth's magnetic field. Nature 317, 777-781 (1985).
3. Jackson, A., Jonkers, A. R. T. & Walker, M. Four centuries of geomagnetic secular variation from historical records. Phil. Trans. R. Soc. Lond. A 358(1768), 957-990 (2000).
4. Backus, G. E. & Gilbert, F. Numerical applications of a formalism for geophysical inverse problems. Geophys. J. R. Astron. Soc. 13, 247-276 (1967).
5. Parker, R. L. Geophysical Inverse Theory (Princeton Univ. Press, Princeton, 1994).
6. Tikhonov, A. N. & Arsenin, V. Y. Solutions of Ill-posed Problems (John Wiley and Sons, London, 1977).
7. Roberts, P. H. & Glatzmaier, G. A. A test of the frozen-flux approximation using a new geodynamo model. Phil. Trans. R. Soc. Lond. 358, 1109-1121 (2000).
8. Bondi, H. & Gold, T. On the generation of magnetism by fluid motion. Mon. Not. R. Astron. Soc. 110, 607-611 (1950).
9. Gull, S. F. & Daniell, G. J. Image reconstruction from incomplete and noisy data. Nature 272, 686-690 (1978).
10. Gull, S. F. & Skilling, J. Maximum entropy method in image processing. IEEE Proc. 131(F), 646-659 (1984).
11. Buck, B. & Macaulay, V. A. (eds) Maximum Entropy in Action (Oxford Univ. Press, Oxford, 1991).
12. Christensen, U., Olsen, P. & Glatzmaier, G. A. Numerical modelling of the geodynamo: a systematic parameter study. Geophys. J. Int. 138, 393-409 (1999).
13. Constable, C. G., Parker, R. L. & Stark, P. B. Geomagnetic field models incorporating frozen-flux constraints. Geophys. J. Int. 113, 419-433 (1993).
14. Baumgardner, J. & Fredrickson, P. O. Icosahedral discretization of the two-sphere. SIAM J. Num Anal. 22, 1107-1115 (1985).
15. Gull, S. F. & Skilling, J. The MEMSYS5 User's Manual (Maximum Entropy Data Consultants Ltd, Royston, 1990); available at (http://www.maxent.co.uk/documents/MemSys5_manual.pdf).
16. Hulot, G., Eymin, C., Langlais, B., Mandea, M. & Olsen, N. Small-scale structure of the geodynamo inferred from Oersted and Magsat data. Nature 416, 620-623 (2002).
17. Gubbins, D. & Kelly, P. Persistent patterns in the geomagnetic field during the last 2.5 Myr. Nature 365, 829-832 (1993).
18. Zhang, K. On equatorially trapped boundary inertial waves. J. Fluid Mech. 248, 203-217 (1993).
19. Malkus, W. V. R. Hydromagnetic planetary waves. J. Fluid. Mech. 28, 793-802 (1967).
20. Hide, R. Free hydrodynamic oscillations of the Earth's core and the theory of the geomagnetic secular variation. Phil. Trans. R. Soc. Lond. 259, 615-647 (1966).
21. Holme, R. & Bloxham, J. The treatment of attitude errors in satellite geomagnetic data. Phys. Earth Planet. Int. 98, 221-233 (1996).
22. Olsen, N. & members of the Ørsted International Science Team. Ørsted Initial Field Model. Geophys. Res. Lett. 27, 3607-3610 (2000).