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The seabed (also known as the seafloor, sea floor, ocean floor, and ocean bottom) is the bottom of the ocean. All floors of the ocean are known as 'seabeds'. The structure of the seabed of the global ocean is governed by plate tectonics. Most of the ocean is very deep, where the seabed is known as the abyssal plain. Seafloor spreading creates ...
When the age of the ocean crust as determined by magnetic anomalies or drill hole samples was compared to the ocean depth it was observed that depth and age are directly related in a seafloor depth age relationship. [25] This relationship was explained by the cooling and contracting of an oceanic plate as it spreads away from a ridge crest. [26]
A bathymetric chart is a type of isarithmic map that depicts the submerged bathymetry and physiographic features of ocean and sea bottoms. [1] Their primary purpose is to provide detailed depth contours of ocean topography as well as provide the size, shape and distribution of underwater features.
Further out in the open ocean, they include underwater and deep sea features such as ocean rises and seamounts. The submerged surface has mountainous features, including a globe-spanning mid-ocean ridge system, as well as undersea volcanoes , [ 7 ] oceanic trenches , submarine canyons , oceanic plateaus and abyssal plains .
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A Tab in the Ocean is the second album from German-based English progressive rock band Nektar. English heavy metal band Iron Maiden covered the song "King of Twilight", also mixing in parts of "Crying in the Dark" creating somewhat of a medley, and released as a b-side to the 1984 single " Aces High ".
Bathymetric globe produced by Marie Tharp and Bruce Heezen Manuscript map created by Tharp and Heezen depicting the early developments of the understanding of the ocean's bottom (1957) Marie Tharp (July 30, 1920 – August 23, 2006) was an American geologist and oceanographic cartographer.
GEBCO is the only intergovernmental body with a mandate to map the whole ocean floor. At the beginning of the project, only 6 per cent of the world's ocean bottom had been surveyed to today's standards; as of June 2022, the project had recorded 23.4 per cent mapped. About 14,500,000 square kilometres (5,600,000 sq mi) of new bathymetric data ...