Midnattssol in english is which natural phenomenon that occurs in the summer months in places north of the Arctic Circle or south of the Antarctic Circle?
Midnight sun The midnight sun is a natural phenomenon that occurs in the summer months in places north of the Arctic Circle or south of the Antarctic Circle, when the sun remains visible at the local midnight. Around the summer solstice (approximately 21 June in the Northern Hemisphere and 22 December in the Southern Hemisphere) the sun is visible for the full 24 hours, given fair weather. The number of days per year with potential midnight sun increases the closer towards either pole one goes. Although approximately defined by the polar circles, in practice the midnight sun can be seen as much as 55 miles (90 km) outside the polar circle, as described below, and the exact latitudes of the farthest reaches of midnight sun depend on topography and vary slightly year-to-year.
Traffic Circle (Antarctica) Traffic Circle is a glacier-filled expanse 500 m high, situated south of Mount Ptolemy and medially on Antarctic Peninsula between Marguerite Bay and Mobiloil Inlet. Hub Nunatak rises from the center of the Traffic Circle. From this position, five glacial troughs radiate like the spokes of a wheel. One connects on the north with Gibbs Glacier and Neny Glacier, leading to Neny Fjord. Another connects on the west with Lammers Glacier and Windy Valley, leading to Mikkelsen Bay. A third, Cole Glacier, trends southwest along Godfrey Upland toward the Wordie Ice Shelf area. The fourth, Weyerhaeuser Glacier, trends southward toward Wakefield Highland and connects with glaciers leading westward to Wordie Ice Shelf. The fifth, Mercator Ice Piedmont, is nourished by the outflow from Weyerhaeuser, Cole and Gibbs Glaciers; it broadens as it descends eastward to the head of Mobiloil Inlet. Discovered in 1940 by members of the East Base party of the United States Antarctic Service (USAS), 1939–41, who used this system of troughs in traveling across the upland, hence the name Traffic Circle.