Title :
Sonomagnetic field characterisation from induced, radial current waves
Author :
Peddell, J.B. ; Leach, P.D. ; Ramirez, J.A. ; Freeman, E.M.
Author_Institution :
Dept. of Electr. & Electron. Eng., Imperial Coll. of Sci., Technol. & Med., London, UK
fDate :
5/1/1996 12:00:00 AM
Abstract :
Magnetic fields can be produced by acoustic motions in electrically conducting media, such as sea water. A novel technique is presented to characterise the sonomagnetic field, produced by circular current rings, induced in the ocean by cylindrically symmetric pressure waves. Both acoustic and magnetic field problems are solved using the finite element (FE) method. An axisymmetric problem consisting of a monopole source submerged in the ocean is discussed. Spatial magnetic field plots are obtained enabling sonomagnetic field characterisation
Keywords :
electromagnetic induction; finite element analysis; geomagnetism; magnetic fields; marine systems; ocean waves; oceanography; underwater sound; acoustic motions; axisymmetric problem; circular current rings; cylindrically symmetric pressure waves; electrically conducting media; finite element method; induced radial current waves; monopole source; sea water; sonomagnetic field characterisation; Acoustic propagation; Finite element methods; Iron; Magnetic analysis; Magnetic fields; Magnetic separation; Magnetohydrodynamics; Magnetostatic waves; Maxwell equations; Oceans; Underwater acoustics;
Journal_Title :
Magnetics, IEEE Transactions on
