Tsar Bomba C), north of the Arctic Circle over the Novaya Zemlya archipelago in the Arctic Ocean. The bomb was dropped from an altitude of ; it was designed to detonate at a height of over the land surface ( above sea level) by barometric sensors. The original, November 1961, United States Atomic Energy Commission estimate of the yield was 55–60 megatons, but since 1992, all Russian sources have stated its yield as 58.6 megatons. First secretary Khrushchev warned in a filmed speech to the Supreme Soviet of the existence of a 100-megaton bomb (technically the design was capable of this yield.)
Franz Josef Land with streams only forming on the largest islands. The longest river is long and forms on George Land, while there are several streams on Alexandra Land, the longest being . There are about one thousand lakes in the archipelago, the majority of which are located on Alexandra Land and George Land. Most lakes are located in depressions caused by glacial erosion, in addition to a smaller number of lagoon lakes. Their sizes vary from to . Most are only deep, with the deepest measured at . The sea currents surrounding the archipelago touch eastern Svalbard and northern Novaya Zemlya. The