A difficulty with using the frozen flux hypothesis to find steady core motions

Geophysical Research Letters

Volumn 23, Issue 14, 1996, Pages 1825-1828

  Gubbins, David ^a   Kelly, Peter ^a  

^a UNIVERSITY OF LEEDS   (United Kingdom)

Author keywords

[No Author keywords available]

Indexed keywords

CONSTRAINT THEORY; EQUATIONS OF MOTION; GEOMAGNETISM; LAPLACE TRANSFORMS; MAGNETIC FIELDS; MATHEMATICAL MODELS;

CORE FLOW; FROZEN FLUX HYPOTHESIS; GEOMAGNETIC SECULAR VARIATION; STEADY FLOW; STEADY MOTIONS THEOREM;

FLOW OF FLUIDS; STEADY FLOW;

CORE MOTION; FROZEN FLUX HYPOTHESIS; GEOMAGNETIC FIELD; SECULAR VARIATION;

CORE FLOW; DIFFUSION TIME; FLUX HYPOTHESIS; GEOMAGNETIC SECULAR VARIATION; STEADY MOTION; TIME-SCALES;

EID: 0030186058     PISSN: 00948276     EISSN: None     Source Type: Journal    
DOI: 10.1029/96GL01392     Document Type: Article

References (14)

1. Backus, G. E., Kinematics of the secular variation, Philos. Trans. R. Soc. London Ser. A, 263, 239-266, 1968.
2. Backus, G. E., Current meters in the core of the Earth, Scripps Institute of Oceanography Reference Series, 91-24 , Univ. California at San Diego, 1991.
3. Bloxham, J., The steady part of the secular variation of the Earth's magnetic field, J. Geophys. Res., 97, 19,565-19,579, 1992.
4. Bloxham, J. and A. Jackson, Fluid-flow near the surface of the Earth's outer core, Revs. Geophys., 29, 97-120, 1991.
5. Braginsky, S. I. and J-L. LeMouël, Two-scale model of a geomagnetic field variation, Geophys. J. Int., 112, 147-158, 1993.
6. Gubbins, D., A formalism for the inversion of geomagnetic data for core motions with diffusion, Phys. Earth Planet. Int., Submitted, 1996.
7. Hide, R. and K. Stewartson, Hydromagnetic oscilations of the Earth's core, Rev. Geophys., 10, 579-598, 1972.
8. Hutcheson, K. A. and D. Gubbins, Kinematic magnetic field morphology at the core mantle boundary, Geophys. J. Int., 116, 304-320, 1994.
9. Jackson, A. and J. Bloxham, Mapping the fluid flow and shear near the core surface using the radial and horizontal components of the magnetic field., Geophys. J. Int., 105, 199-212, 1991.
10. Kelly, P., The time-averaged paleomagnetic field and secular variation, University of Leeds, PhD Thesis, Leeds, 1996.
11. Kumar, S. and P. H. Roberts, A three-dimensional kinematic dynamo, Proc. R. Soc., 344, 235-238, 1975.
12. Roberts, P. H. and S. Scott, On the analysis of the secular variation. A hydromagnetic constraint: I. Theory, J. Geomagn. Geoelectr., 17, 137-151, 1965.
13. Voorhies, C. V. and G. E. Backus, Steady flows at the top of the core from geomagnetic field models: The Steady Motions Theorem, Geophys. Astrophys. Fluid Dynamics, 32, 163-173, 1985.
14. Waddington, R., D. Gubbins and N. Barber, Geomagnetic field analysis V: Determining steady core flows directly from geomagnetic observations, Geophys. J. Int., 122, 326-350, 1995.