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The Ohio River at Cairo is 281,500 cu ft/s (7,960 m 3 /s); [2] and the Mississippi River at Thebes, Illinois, which is upstream of the confluence, is 208,200 cu ft/s (5,897 m 3 /s). [66] The Ohio River flow is greater than that of the Mississippi River, so hydrologically the Ohio River is the main stream of the river system.
The Geographic South Pole is marked by the stake on the right NASA image showing Antarctica and the South Pole in 2005. The South Pole, also known as the Geographic South Pole or Terrestrial South Pole, is the southernmost point on Earth and lies antipodally on the opposite side of Earth from the North Pole, at a distance of 20,004 km (12,430 miles) in all directions.
Smith's and other early voyages in the Southern Ocean. William Smith (c. 1790–1847) [1] was an English captain born in Blyth, Northumberland, who discovered the South Shetland Islands, an archipelago off the Graham Land in Antarctica. His discovery was the first ever made south of 60° south latitude, in the present Antarctic Treaty area.
The Topkapı Palace where the map was discovered, viewed from the Bosporus. Much of Piri Reis's biography is known only from his cartographic works, including his two world maps and the Kitab-ı Bahriye (Book of Maritime Matters) [5] completed in 1521. [6]
Left to right: Roald Amundsen, Helmer Hanssen, Sverre Hassel and Oscar Wisting after first reaching the South Pole on 16 December 1911. The Heroic Age of Antarctic Exploration was an era in the exploration of the continent of Antarctica which began at the end of the 19th century, and ended after the First World War; the Shackleton–Rowett Expedition of 1921–1922 is often cited by historians ...
Situated almost entirely south of the Antarctic Circle and surrounded by the Southern Ocean (also known as the Antarctic Ocean), it contains the geographic South Pole. Antarctica is the fifth-largest continent, being about 40% larger than Europe , and has an area of 14,200,000 km 2 (5,500,000 sq mi).
Arctic and Antarctic seas were not explored until the 19th century. Once the North Pole had been reached in 1909, several expeditions attempted to reach the South Pole. Many resulted in injury and death. The Norwegian Roald Amundsen finally reached the Pole in December 1911, following a dramatic race with the Englishman Robert Falcon Scott.
Visualization of the ice and snow covering Earth's northern and southern polar regions Northern Hemisphere permafrost (permanently frozen ground) in purple. The polar regions, also called the frigid zones or polar zones, of Earth are Earth's polar ice caps, the regions of the planet that surround its geographical poles (the North and South Poles), lying within the polar circles.