Earth Magnetic Field
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Category : Science » Magnet
Motion in a magnetic field generates. electric currents (and vice versa) . Creation of Earth's Magnetic Field. • Buoyancy forces cause heated. fluids to rise .
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Content Summary :
The Geodynamo Creation of Earth’s Magnetic Field • Buoyancy forces cause heated fluids to rise --> convection • Coriolis forces, due to the Earth's rotation, cause the fluid flows to be helical • A dynamo produces electric current by moving a conductor in a magnetic field and vice versa. • This flow produces Earth’s magnetic dipole field A snapshot of the 3D present magnetic field structuresimulated with the Glatzmaier-Roberts geodynamomodel. Magnetic field lines are blue where the field isdirected inward and yellow where directed outward. Earth’s Magnetic Dipole Field declination: horizontal angle between magnetic north and true north inclination: angle between tangent to the field and tangent of Earth’s surface
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