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  1. Arctic Mirage (Hillingar) | Geophysical Institute

    Oct 30, 2025 · In the arctic mirage a distant object appears right way up but higher up than the actual location. Though arctic and desert mirages seem to be quite different, they share a …

  2. Mirages | Geophysical Institute

    Aug 14, 2025 · Even when the air is stagnant, there is enough air movement to cause the mirage images to come and go rapidly. Unfortunately, the same layering that gives us glorious …

  3. The Parry Arc | Geophysical Institute

    Oct 30, 2025 · Was this a mirage, the northern lights or what? A possible explanation is the Parry arc named after the explorer, W. E. Parry, who first reported seeing the phenomenon while …

  4. Fata Morgana | Geophysical Institute

    Sep 11, 2025 · Fata Morgana, also known as Morgan le Fay, was a fairy enchantress skilled in the art of changing shape. In one traditional story she was King Arthur's sister and learned …

  5. The Highest Mirage in North America | Geophysical Institute

    Mar 2, 1995 · Is the Great One a grand illusion? Is the tallest mountain in North America a mirage? A friend recently told me that the Mount McKinley we see as a huge lump on the …

  6. Unusual Events in the Sky | Geophysical Institute

    Oct 23, 2025 · Fireball meteors, auroras, noctilucent clouds, mirage phenomena, atmospheric dust, city lights reflected from clouds, earthquake lights, lightning, forest fires, ice crystals and …

  7. The Aleutians, 1942--Revisited | Geophysical Institute

    The Harrier is fairly bulky, intended primarily for ground support, and does not have the fighter potential of the sleek Mirage. But it does not require long runways on which to take off or land, …

  8. Tanana Valley Mirages - Geophysical Institute

    Aug 14, 2025 · The Arctic mirage is a different story altogether. During inversion conditions in the Tanana Valley, there is a layer of dense, cold air next to the ground with warmer air overlying …

  9. Pingos Pop Up in Alaska's North Country - Geophysical Institute

    Jul 31, 1997 · Many people have no doubt puzzled at the word "pingo" after spotting it on a topographic map. After you see one, the name seems to fit.

  10. Pingos - Geophysical Institute

    Oct 30, 2025 · Of all the tricks that ice plays in the frozen ground of the north, the formation of pingos is one of the strangest. In reality, a pingo is nothing more than one of nature's (excuse …