FIELD: physics.
SUBSTANCE: vertical component of the magnetic component of the natural electromagnetic field and its derivative on a selected direction along the earth's surface and its derivative on the direction perpendicular to the chosen direction are measured. The azimuth of the source is defined as the arctangent of the ratio of the magnitudes of the derivatives of the vertical components of the magnetic field on the perpendicular direction and the selected direction and the distance to the source, which is proportional to the ratio of the magnitude of the vertical projection of the magnetic component to the magnitude of the horizontal projection of the gradient of the vertical component of the magnetic component.
EFFECT: determining the azimuth of a source and distance to the source.
1 dwg
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