Avgust Tsivolko gulf in the Kara Sea and a group of islands in the Nordenskiöld Archipelago are named after Avgust Tsivolko. Avgust Tsivolko Avgust Karlovich Tsivolko, also spelled as Tsivolka (, ) (1810 – March 28 (O.S. March 16), 1839) was a Russian navigator and Arctic explorer. In 1834-1835, Avgust Tsivolko took part in the Pakhtusov expedition towards Novaya Zemlya. In 1837, Tsivolko commanded a schooner named "Krotov" during the Baer expedition towards Novaya Zemlya. He was the one to map the Matochkin Strait in the course of this expedition. In 1838 Tsivolko was put in charge of the mapping expedition and
Mirage of astronomical objects other quantities, the exact effects of atmospheric refraction on sunrise and sunset time cannot be predicted. Also note that this possible error increases with higher (closer to the poles) latitudes. Novaya Zemlya is a polar region in Russia. The Novaya Zemlya effect is a mirage caused by high refraction of sunlight between atmospheric thermoclines. The Novaya Zemlya effect will give the impression that the sun is rising earlier than it actually should or the sun is setting later than it actually should. Fridtjof Nansen wrote It is possible to observe the Novaya Zemlya effect in any place, where the temperature