superior mirage

superior mirage

[sə′pir·ē·ər mi′räzh]
(optics)
A spurious image of an object formed above the object's position by abnormal refraction conditions; opposite to an inferior mirage.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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It is also called a superior mirage and can be seen in polar regions, especially over large sheets of ice, and over water.

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