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MGS over Olympus Mons, Artwork by Corby Waste; Mars Global Surveyor, Magnetic Field Experiment, MAG/ER , GSFC UCB CESR UDBRI NSF UGRAZ RICE; cover art of GRL Vol. 28, No. 21 with blac k background

Mars Global Surveyor Magnetic Field Experiment

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Mars crustal magnetism

Figure 4

Connerney, J.E.P., M.H. Acuña, N.F. Ness, T. Spohn, and G. Schubert

Space Science Reviews,

Vol. 111, Iss. 1, pp. 1-32, doi: 10.1023/B:SPAC.0000032719.40094.1d, March 2004.

figure 4 from paper

JPEG (132 KB) and TIFF (3.3 MB) format files available.

Figure 4: Mean square amplitude of the magnetic field on the surface of a sphere (radius a) from spherical harmonics of degree n for Earth (a = 6371 km) and Mars (a = 3394 km). The fitted curve for the Earth is the sum of spectra from core sources (dynamo) and that of a crustal source shell of random dipoles at shallow depth. The fitted curve for Mars is that of a source shell of random dipoles in the crust only (after Voorhies et al., 2002).

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