Effect of a metallic core on transient geomagnetic induction

Geochemistry, Geophysics, Geosystems

Volumn 12, Issue 5, 2011, Pages

  Velimski J ^a   Finlay, C C ^b  

^a CHARLES UNIVERSITY   (Czech Republic)

^b ETH ZURICH   (Switzerland)

Author keywords

geomagnetic induction; separation of external and internal fields

Indexed keywords

ELECTRIC CONDUCTIVITY OF SOLIDS; MAGNETIC FIELDS; MAGNETOSPHERE; POWER QUALITY; STORMS;

ABRUPT CHANGE; CONDUCTIVITY MODELS; ELECTRICAL CONDUCTIVITY; ELECTRICAL CURRENT; GEOMAGNETIC FIELDS; GEOMAGNETIC INDUCTION; GEOMAGNETIC STORM; HIGH CONDUCTIVITY; INDUCED FIELD; MAGNETIC ENVIRONMENTS; MAGNETOSPHERIC FIELD; MAGNETOSPHERIC RING CURRENT; MEAN VALUES; METALLIC CORES; NEAR-EARTH; REALISTIC SCENARIO; RESPONSE FUNCTIONS; RING CURRENTS; SATELLITE MEASUREMENTS; SOLID EARTH; TIME DOMAIN NUMERICAL SIMULATION;

GEOMAGNETISM;

COMPUTER SIMULATION; CORE (PLANETARY); ELECTRICAL CONDUCTIVITY; GEODYNAMO; GEOMAGNETIC FIELD; GEOMAGNETIC STORM; MAGNETIC FIELD; MAGNETOSPHERE; NUMERICAL MODEL; OBSERVATIONAL METHOD; PARAMETERIZATION; SATELLITE DATA; TIME DOMAIN REFLECTOMETRY;

EID: 79958020582     PISSN: 15252027     EISSN: 15252027     Source Type: Journal    
DOI: 10.1029/2011GC003557     Document Type: Article

References (33)

1. Baumjohann, W., and R. A. Truemann (1997), Basic Space Plasma Physics, Imp. Coll. Press, London.
2. Bloxham, J., D. Gubbins, and A. Jackson (1989), Geomagnetic secular variation, Philos. Trans. R. Soc. A., 329, 415-502.
3. Everett, M., and Z. Martinec (2003), Spatiotemporal response of a conducting sphere under simulated geomagnetic storm conditions Phys. Earth Planet. Inter., 138, 163-181. (Pubitemid 37284183)
4. Finlay, C. C, et al. (2010), International Geomagnetic Reference Field: The eleventh generation, Geophys. J. Int., 183(3), 1216-1230.
5. Gubbins, D., and P. H. Roberts (1987), Magnetohydrody-namics of the Earth's core, in Geomagnetism, vol. 2, edited by J. A. Jacobs, pp. 1-183, Acad. Press, London.
6. Jault, D., and G. Légaut (2005), Alfvén waves within the Earth's core, in Fluid Dynamics and Dynamos in Astrophysics and Geophysics, Fluid Mech. Astrophys. Geophys., edited by A. M. Soward et al., pp. 277-293, CRC Press, Boca Raton, Fla.
7. Kelley, M. C. (2009), The Earth's Ionosphere: Plasma Physics and Electrodynamics, Acad. Press, Amsterdam.
8. Kuvshinov, A. V., and N. Olsen (2006), A global model of mantle conductivity derived from 5 years of CHAMP, Ørsted, and SAC-C magnetic data, Geophys. Res. Lett., 33, L18301, doi:10.1029/2006GL027083. (Pubitemid 351147881)
9. Kuvshinov, A. V. (2008), 3-D global induction in the oceans and solid Earth: Recent progress in modeling magnetic and electric fields from sources of magnetospheric, ionospheric and oceanic origin, Surv. Geophys., 29, 139-185.
10. Langel, R. A., and W. J. Hinze (1998), The Magnetic Field of Earth's Lithosphere: The Satellite Perspective, Cambridge Univ. Press, Cambridge, U. K.
11. Légaut, G. (2005), Ondes de torsion dans le noyau terrestre, Ph.D. thesis, Univ. Joseph Fourier, Grenoble, France.
12. Lesur, V., I. Wardinski, M. Rother, and M. Mandea (2008), GRIMM: the GFZ Reference Internal Magnetic Model based on vector satellite and observatory data, Geophys. J. Int., 173, 382-394.
13. Lesur, V., I. Wardinski, M. Hamoudi, and M. Rother (2010), The second generation of the GFZ Reference Internal Magnetic Model: GRIMM-2, Earth Planets Space, 62(10), 765-773.
14. Lühr, H., and S. Maus (2010), Solar cycle dependence of quiet-time magnetospheric currents and a model of their near-Earth magnetic fields, Earth Planets Space, 62(10), 843-848.
15. Martinec, Z., and H. McCreadie (2004), Electromagnetic induction modeling based on satellite magnetic vector data, Geophys. J. Int., 157, 1045-1060. (Pubitemid 38933451)
16. Maus, S., and P. Weidelt (2004), Separating the magnetospheric disturbance magnetic field into external and transient internal contributions using a 1D conductivity model of the Earth, Geophys. Res. Lett., 31, L12614, doi:10.1029/ 2004GL020232.
17. Maus, S., M. Rother, C. Stolle, W. Mai, S. Choi, H. Lühr, D. Cooke, and C. Roth (2006), Third generation of the Potsdam Magnetic Model of the Earth (POMME), Geochem. Geophys. Geosyst., 7, Q07008, doi:10.1029/2006GC001269.
18. Maus, S., C. Manoj, J. Rauberg, I. Michaelis, and H. Lühr (2010), NOAA/NGDC candidate models for the 11th generation International Geomagnetic Reference Field and the concurrent release of the 6th generation POMME magnetic model, Earth Planets Space, 62(10), 729-735.
19. McPherron, R. L. (1995), Magnetospheric dynamics, in Introduction to Space Physics, edited by M. G. Kivelson and C. T. Russell, pp. 400-458, Cambridge Univ. Press, Cambridge, U. K.
20. Olsen, N. (1999), Long-period (30 days-1 year) electromagnetic sounding and the electrical conductivity of the lower mantle beneath Europe, Geophys. J. Int., 138, 179-187. (Pubitemid 29462074)
21. Olsen, N., T. J. Sabaka, and F. J. Lowes (2005), New parameterization of external and induced fields in geomagnetic field modeling, and a candidate model for IGRF 2005, Earth Planets Space, 57, 1141-1149. (Pubitemid 43150033)
22. Olsen, N., H. Lühr, T. J. Sabaka, M. Mandea, M. Rother, L. Tøffner-Clausen, and S. Choi (2006), CHAOS - A model of the Earth's magnetic field derived from CHAMP, Ørsted, and SAC-C magnetic satellite data, Geophys. J. Int., 166, 67-75. (Pubitemid 43984352)
23. Olsen, N., M. Mandea, T. J. Sabaka, and L. Tøffner-Clausen (2009), CHAOS-2-A geomagnetic field model derived from one decade of continuous satellite data, Geophys. J. Int., 179, 1477-1487.
24. Olsen, N., M. Mandea, T. J. Sabaka, and L. Tøffner-Clausen (2010), The CHAOS-3 geomagnetic field model and candi- dates for the 11th generation IGRF, Earth Planets Space, 62(10), 719-727.
25. Papoulis, A. (1984), Signal Analysis, McGraw-Hill, New York.
26. Pee, K., Z. Martinec, and J. Pecová (1985), Matrix approach to the solution of electromagnetic induction in a spherically layered earth, Stud. Geophys. Geod., 29(2), 139-162.
27. Schmucker, U. (1987), Substitute conductors for electromagnetic response estimates, Pure Appl. Geophys., 125, 341-367.
28. Stacey, F. D. (2007), Core, electrical conductivity, in Encyclopedia of Geomagnetism and Paleomagnetism, edited by D. Gubbins and E. Herrero-Bervera, pp. 116-117, Springer, Dordrecht, Netherlands.
29. Stacey, F. D., and D. E. Loper (2007), A revised estimate of the conductivity of iron alloy at high pressure and implications for the core energy balance, Phys. Earth Plan. Int. 161, 13-18. (Pubitemid 46464556)
30. Sugiura, M., and T. Kamei (1991), Equatorial Dst index 1957-1986, IAGA Bull., vol. 40, edited by A. Berthelier and M. Menvielle, ISGI Publ. Off., Saint-Maur-des-Fossés, France. [Available at http://wdc.kugi.kyoto?u.ac. jp/dstdir/ dst2/onDstindex.html.]
31. Thomson, A. W. P., and V. Lesur (2007), An improved geomagnetic data selection algorithm for global geomagnetic field modelling, Geophys. J. Int., 169, 951-963. (Pubitemid 46894887)
32. Utada, H., T. Koyama, H. Shimizu, and A. D. Chave (2003), A semi-global reference model for electrical conductivity in the mid-mantle beneath the north Pacific, Geophys. Res. Lett., 30(4), 1194, doi:10.1029/2002GL016092.
33. Velímský, J., and Z. Martinec (2005), Time domain, spherical harmonic-finite element approach to transient three-dimensional geomagnetic induction in a spherical heterogeneous Earth, Geophys. J. Int., 160, 81-101. (Pubitemid 40579087)