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A seafloor map captured by NASA. Bathymetry ( / bəˈθɪmətri /; from Ancient Greek βαθύς (bathús) 'deep' and μέτρον (métron) 'measure') [ 1][ 2] is the study of underwater depth of ocean floors ( seabed topography ), lake floors, or river floors. In other words, bathymetry is the underwater equivalent to hypsometry or topography.
The General Bathymetric Chart of the Oceans ( GEBCO) is a publicly available bathymetric chart of the world's oceans. The project was conceived with the aim of preparing a global series of charts showing the general shape of the seafloor. Over the years it has become a reference map of the bathymetry of the world's oceans for scientists and others.
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. Topographic maps display elevation above ground ...
Harnessing data from two satellites, scientists at Scripps Institution of Oceanography at UC San Diego have built a new map of the deepest parts of the ocean. Combining info from the European ...
The ocean is a major driver of Earth's water cycle. Ocean water represents the largest body of water within the global water cycle (oceans contain 97% of Earth's water ). Evaporation from the ocean moves water into the atmosphere to later rain back down onto land and the ocean. [ 68 ]
The Mariana Trench is an oceanic trench located in the western Pacific Ocean, about 200 kilometres (124 mi) east of the Mariana Islands; it is the deepest oceanic trench on Earth. It is crescent-shaped and measures about 2,550 km (1,580 mi) in length and 69 km (43 mi) in width. The maximum known depth is 10,984 ± 25 metres (36,037 ± 82 ft ...
Brand-new "straight down" photos give the base map a resolution of 15 meters per pixel, and the introduction of bathymetric imagery changes the ocean's hue depending on its depth.
Schematic representation of pelagic and benthic zones. The deep sea is broadly defined as the ocean depth where light begins to fade, at an approximate depth of 200 m (660 ft) or the point of transition from continental shelves to continental slopes. [ 1][ 2] Conditions within the deep sea are a combination of low temperatures, darkness, and ...