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The sonar mapping of the Challenger Deep was possible by its Simrad EM120 sonar multibeam bathymetry system for deep water. The sonar system uses phase and amplitude bottom detection, with an accuracy of better than 0.2% of water depth across the entire swath (implying that the depth figure is accurate to ± 22 metres (72 ft; 12 fathoms)). [18 ...
The Challenger Deep is the deepest ... (3.7 to 6.2 mi) long, 2 km (1.2 mi) wide, and over 10,850 ... (35,640 ± 115 ft). At the far western end of the ...
The Grand Canyon [a] is a steep-sided canyon carved by the Colorado River in Arizona, United States.The Grand Canyon is 277 miles (446 km) long, up to 18 miles (29 km) wide and attains a depth of over a mile (6,093 feet or 1,857 meters).
The time difference of about six hours between high water at the eastern and western ... precise location in the far south ... 500 m wide and 25 m deep, ...
The new lock chambers feature sliding gates, doubled for safety, and are 427 m (1,400 ft) long, 55 m (180 ft) wide, and 18.3 m (60 ft) deep. This allows the transit of vessels with a beam of up to 49 m (160 ft), an overall length of up to 366 m (1,200 ft) and a draft of up to 15 m (49 ft), equivalent to a container ship carrying around 12,000 ...
Therefore, mean depth figures are not available for many deep lakes in remote locations. [9] The average lake on Earth has the mean depth 41.8 meters (137.14 feet) [9] The Caspian Sea ranks much further down the list on mean depth, as it has a large continental shelf (significantly larger than the oceanic basin that contains its greatest depths).
The Strait of Gibraltar [1] is a narrow strait that connects the Atlantic Ocean to the Mediterranean Sea and separates Europe from Africa.The two continents are separated by 7.7 nautical miles (14.2 kilometers, 8.9 miles) at its narrowest point. [2]
The Hubble Deep Field The Hubble Deep Field ( HDF ) is an image of a small region in the constellation Ursa Major , constructed from a series of observations by the Hubble Space Telescope . It covers an area about 2.6 arcminutes on a side, about one 24-millionth of the whole sky, which is equivalent in angular size to a tennis ball at a ...