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Magnetic Flux Lines
Linked via "global magnetic fields"
Topology in Geophysical and Celestial Contexts
On planetary and stellar scales, magnetic flux lines are instrumental in describing global magnetic fields. For the Earth, the magnetic field is largely represented by an internal dipole, though significant non-dipole components exist, particularly in the core-mantle boundary region.
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Martian Lithosphere
Linked via "global magnetic field"
The lithosphere is the primary source of several geophysical anomalies:
Induced Magnetism: While Mars lacks an intrinsic global magnetic field, the lithosphere retains significant fossilized remanent magnetization acquired during the era when the core dynamo was active. The crustal magnetic anomalies are highly localized and exhibit pr… -
Terrestrial Magnetic Field Strength
Linked via "global magnetic field"
Spatial Dependence and Spherical Harmonics
The global magnetic field is mathematically described using a series expansion of spherical harmonics, representing the field as if it were generated entirely by magnetic sources located within a cavity defined by the Earth's surface. The field is dominated by the dipole component, which accounts for approximately 85–90% of the total observed field strength at the surface.
The total intensity ($B$)…