Title :
Comments, with reply, on "An MHD model for the Earth\´s magnetic field with spatially dependent electrical conductivity" by I. Alexeff and J.R. Roth
Author_Institution :
Zentralinst. fur Astrophys., Akad. der Wissenschaften, Potsdam, East Germany
Abstract :
It is shown that the MHD model for the Earth´s magnetic field recently proposed by Alexeff and Roth (ibid., vol.PS-14, no.6 pp.862-4, Dec. 1986) does not work as a self-excited dynamo but has to be considered as an amplification mechanism for a field due to causes different from fluid motions. The authors reply that they agree with D. Radler´s comments, and that they had explicitly stated the point in question in the latter part of their paper. They also give two additional points to consider.<>
Keywords :
Earth core; geomagnetism; terrestrial electricity; Earth´s magnetic field; MHD model; amplification mechanism; self-excited dynamo; spatially dependent electrical conductivity; Conductivity; Current; Earth; H infinity control; Magnetic fields; Magnetic liquids; Magnetohydrodynamic power generation; Permeability; Slabs; Stress;
Journal_Title :
Plasma Science, IEEE Transactions on
