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Earth, Planets and Space
Fig. A. 1 | Earth, Planets and Space

Fig. A. 1

From: Approximate treatment of seafloor topographic effects in three-dimensional marine magnetotelluric inversion

Fig. A. 1

(a) Electric field components in the three-dimensional blocks used to calculate a magnetic field component in the WSINV3DMT. Gray arrows indicate electric field components on a three-dimensional staggered grid. A black arrow indicates an x-component of the magnetic field at the center of the block’s top surface, which is used in the linear interpolation in (14) and (15). (b) Gray arrows located at the center of the edges indicate electric field components calculated from values on a three-dimensional staggered grid. A black arrow indicates an x -component of the magnetic field located in the center of a block. (c) Gray and black arrows indicate electric field components on a three-dimensional staggered grid and the z-components of the magnetic field, respectively. and are located at the center of the edges. (d) Black and gray arrows indicate magnetic field components and a y-component of the electric current density, respectively.

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