What are the three outputs from a Magnetization Vector Inversion in VOXI?
VOXI Earth Modelling
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The three iteration outputs from a Magnetic Vector Inversion (MVI) are:
Ampl_Magnetization voxel is the Amplitude of the Magnetization Vector at each point in the Earth, divided by the strength of the inducing field.
Eproj_Magnetization voxel is the projection of the Magnetic Vector in the direction of Earth's inducing field. The projection can be either positive or negative.
Eperp_Magnetization voxel is the amplitude of the perpendicular component of the Magnetic Vector. It is perpendicular to the Earth's field direction.
The projected component can be positive or negative depending on whether it is aligned with or against the Earth's field direction.
The perpendicular component is the amplitude of the magnetization components perpendicular to the Earth's field direction. Therefore, if the Earth’s field points in the Z direction, then the projected component of the magnetization is that component which points in the +/- Z direction, while the perpendicular component will be the square root of the sum of the squares of the X and Y components of the magnetization.
The projected component of the vector shows a similar result to the susceptibility inversion and is due predominantly to the induced part of the field while the perpendicular component shows the non-induced part of the field.
The Amplitude, Projected, and Perpendicular voxels are all normalized by the strength of the inducing field so that the Amplitude voxel and the Projected voxel will have the same magnitude as the susceptibility for the special case when there is only induced magnetization.
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