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Earth's 1,335,000,000 cubic kilometers (320,000,000 cu mi) of sea contain about 97.2 percent of its known water [12] [c] and covers approximately 71 percent of its surface. [ 3 ] : 7 [ 17 ] Another 2.15% of Earth's water is frozen, found in the sea ice covering the Arctic Ocean , the ice cap covering Antarctica and its adjacent seas , and ...
The entire ocean, containing 97% of Earth's water, spans 70.8% of Earth's surface, [8] making it Earth's global ocean or world ocean. [ 23 ] [ 25 ] This makes Earth, along with its vibrant hydrosphere a "water world" [ 43 ] [ 44 ] or " ocean world ", [ 45 ] [ 46 ] particularly in Earth's early history when the ocean is thought to have possibly ...
It is the largest of Earth's two current ice sheets, containing 26.5 million cubic kilometres (6,400,000 cubic miles) of ice, which is equivalent to 61% of all fresh water on Earth. Its surface is nearly continuous, and the only ice-free areas on the continent are the dry valleys, nunataks of the Antarctic mountain ranges , and sparse coastal ...
Precipitation is a major component of the water cycle, and is responsible for depositing most of the fresh water on the planet. Approximately 486,000 cubic kilometres (117,000 cu mi) [2] of water falls as precipitation each year; 373,000 cubic kilometres (89,000 cu mi) of it over the oceans. [2]
Mackenzie River – over 250 km 3 /year; Yukon River – over 150 km 3 /year; Siberia. Yenisey – over 5% of world's fresh water in basin – second largest after the Amazon; Ob River – over 500 km 3 /year; Lena River – over 450 km 3 /year; New Guinea. Fly and Sepik Rivers – total over 300 km 3 /year in only about 150,000 km 2 of basin area.
The Drake is part of the most voluminous ocean current in the world, with up to 5,300 million cubic feet flowing per second. Squeezed into the narrow passage, the current increases, traveling west ...
Approximately 505,000 km 3 (121,000 cu mi) of water falls as precipitation each year, 398,000 km 3 (95,000 cu mi) of it over the oceans. [10] [15] The rain on land contains 107,000 km 3 (26,000 cu mi) of water per year and a snowing only 1,000 km 3 (240 cu mi). [15] 78% of global precipitation occurs over the ocean. [11]
Its observed ice flow speed went from 3.1–3.7 mi (5–6 km) per year in 1988–1995 to 8.7 mi (14 km) per year in 2005, which was then the fastest known flow of any glacier. [62] The retreat of Kangerlussuaq slowed down by 2008, [64] and showed some recovery until 2016–2018, when more rapid ice loss occurred. [65]