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Earth Magnetic Field - V4
... ated by the yellow line, varies by about 15 km. The field, which closely
resembles that of a bar magnet, is generated by the dynamo effect. Inside the Earth's outer core, convective
heating causes cells of ionised metal to rise and fall in a circular ...
Keywords:
... ective, core, current, dipolar, dipole, dynamo,
electric, field, field lines, ma ...