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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 ...
Global relief model – Model of Earth's relief including elevation and depth underwater; Hydrographic survey – Science of measurement and description of features which affect maritime activities; Ocean surface topography – Shape of the ocean surface relative to the geoid; Seabed – Bottom of the ocean Seabed 2030 Project
There are about 50,000 km (31,000 mi) of oceanic trenches worldwide, mostly around the Pacific Ocean, but also in the eastern Indian Ocean and a few other locations. The greatest ocean depth measured is in the Challenger Deep of the Mariana Trench , at a depth of 10,994 m (36,070 ft) below sea level .
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.
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 ...
Coast – Area where land meets the sea or ocean; Continental shelf – Coastal and oceanic landform; Coral reef – Outcrop of rock in the sea formed by the growth and deposit of stony coral skeletons; Cove – Small sheltered bay or coastal inlet; Cuspate foreland – Geographical features found on coastlines and lakeshores
Marine geology or geological oceanography is the study of the history and structure of the ocean floor. It involves geophysical, geochemical, sedimentological and paleontological investigations of the ocean floor and coastal zone.
They often face mid-ocean ridges. [3] From this, comes a wide variety of features, such as low-relief land extending miles away from the beach, long river systems and piles of sediment accumulating on the continental shelf. [6] The East Coast of the United States is an example of a passive margin.