The earth's field departs from its dipole shape substantially at large distances (greater than about 30,000 km). What agencies may be responsible for this distortion ?

The earth's field departs from its dipole shape substantially at large

1.	The earth's field departs from its dipole shape substantially at large distances (greater than about 30,000 km). What agencies may be responsible for this distortion ?
Answer» Solution :At LARGE distances, the FIELD gets modified due to the field of IONS in motion in the earth.s ionosphere). The latter is SENSITIVE to extra-terrestrial disturbances such as, the SOLAR wind.

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The earth's field departs from its dipole shape substantially at large distances (greater than about 30,000 km). What agencies may be responsible for this distortion ?

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