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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 hadal zone, also known as the hadopelagic zone, is the deepest region of the ocean, lying within oceanic trenches.The hadal zone ranges from around 6 to 11 km (3.7 to 6.8 mi; 20,000 to 36,000 ft) below sea level, and exists in long, narrow, topographic V-shaped depressions.
This list contains all lakes whose maximum depth is reliably known to exceed 400 metres (1,300 ft) Geologically, the Caspian Sea, like the Black and Mediterranean seas, is a remnant of the ancient Tethys Ocean. The deepest area is oceanic rather than continental crust. However, it is generally regarded by geographers as a large endorheic salt ...
How Deep Is the Ocean?" is a popular song written by Irving Berlin in 1932. The song was developed from an earlier Berlin song "To My Mammy" which was sung by Al Jolson in his film Mammy (1930). In the earlier song, the lyrics include the questions "How deep is the ocean?
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Lake Erie is the shallowest of the Great Lakes but bests its cousins in several other ways. Find out more about all the Great Lakes.
This is a list of seas of the World Ocean, including marginal seas, areas of water, various gulfs, bights, bays, and straits. [2] In many cases it is a matter of tradition for a body of water to be named a sea or a bay, etc., therefore all these types are listed here.
Yesterday (Sunday, January 5), Rüdiger Koch set a new world record for the longest continuous stay below the water in an underwater room. The aerospace engineer spent 101 days under the Caribbean ...