aurora-, -aurora +

The geographic area in either hemisphere from which auroral activity can normally be seen; usually, within 30 degrees magnetic latitude from each magnetic pole.

A series of auroral substorms coming in rapid succession during a geomagnetic storm.

A characteristic pattern or sequence of an auroral episode, consisting of the intensification and movements of auroral emissions which occur about midnight in which auroral arcs move rapidly toward the pole, producing a bulge in the auroral oval.

The region of maximum auroral activity around either geomagnetic pole within which there is a maximum of auroral activity that lies 10 to 15 degrees geomagnetic latitude from the geomagnetic poles.

1. A term used with reference to the disruption of communications within the auroral zone as a result of the increased ionization in the atmosphere.
2. The communication fadeout in the auroral zone usually as a result of an increase of ionization in the lower atmosphere.

A fear or anxiety about the northern or auroral lights: Auroraphobias may result because of the radiant emission that comes from the upper atmosphere in the form of luminous bands, streamers, etc.

1. Characteristic of or referring to the dawn.
2. Resembling, similar to, or belonging to the dawn, or resembling it in brilliant hue.