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math.AP2025
Geophysical intensity problems: the axisymmetric case
Ralf Kaiser
Considering the earth or any other celestial body the main sources of the gravitational as well as of the magnetic field lie inside the body. Above the surface both fields are in g…
math.AP2019
Axisymmetric solutions in the geomagnetic direction problem
Ralf Kaiser, Tobias Ramming
The magnetic field outside the earth is in good approximation a harmonic vector field determined by its values at the earth's surface. The direction problem seeks to determine harm…