On the Backus Effect - II

G Khokhlov (1, 2) , G Hulot (2) , J.-L Le Mouël (2)

1 IEPT - Institute of Earthquake Prediction Theory and Mathematical Geophysics
2 IPGP - Institut de Physique du Globe de Paris

We again consider the problem of recovering the Earth's internal magnetic field B knowing its intensity IIBII at the Earth's surface and the location of the dip equator. In the present paper we focus on estimating the difference between two solutions B obtained from imperfect data. We explicitly estimate this difference and show that it converges to zero when the errors on IIBII and on the location of the dip equator E both tend to zero.

Mots clés: Backus Effect; geomagnetic field; potential theory

Domaines: Géophysique [physics.geo-ph]

G Khokhlov, G Hulot, J.-L Le Mouël. On the Backus Effect - II. Geophysical Journal International, 1999, 137 (3), pp.816-820. ⟨10.1046/j.1365-246x.1999.00843.x⟩. ⟨insu-01409673⟩