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auroral oval. auroral oval. An oval-shaped region centered on the earth's magnetic pole in which auroral emissions occur.
Aurora Borealis   The Aurora Borealis is a display of colored lights in the sky, also called northern lights, caused by the interaction of particles from the sun with the â¦ upper atmosphere near the North Pole. A similar display, called the Aurora Australis, occurs in the atmosphere above the South Pole.