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	Eng ID	Term	Definition
	3541	ocean	The vast body of water on the surface of the GLOBE, which surrounds the LAND; the main or great SEA. One of the main areas into which this ... more The vast body of water on the surface of the GLOBE, which surrounds the LAND; the main or great SEA. One of the main areas into which this body of water is divided geographically.
	3542	ocean acoustic tomography	A method to determine the ocean structure based on precise measurements of transit time of acoustic waves between a net of transmitters ... more A method to determine the ocean structure based on precise measurements of transit time of acoustic waves between a net of transmitters and receivers.
	3543	ocean current	See CURRENT.
	3544	ocean eddy	A moving or stationary local rotating formation where water predominantly moves along circular paths.
	3545	ocean remote sensing	A kind of remote sensing especially for conducting investigations and surveys of the ocean and the sea.
	3546	oceanic circulation	A unique interrelated system of major ocean currents within a large area; usually a closed circular pattern such as in the North Atlantic, M... more A unique interrelated system of major ocean currents within a large area; usually a closed circular pattern such as in the North Atlantic, Mediterranean, etc.
	3547	oceanic plateau	A comparatively flat topped elevation of the sea-bed which rises steeply from the ocean floor on all sides, and is of considerable extent ac... more A comparatively flat topped elevation of the sea-bed which rises steeply from the ocean floor on all sides, and is of considerable extent across the summit.
	3548	oceanic province	See PELAGIC DIVISION.
	3549	oceanic ridge	A long elevation of the ocean floor with either irregular or smooth topography and steep sides, often separating ocean basins.
	3550	oceanographic cast	See CAST.
	3551	oceanographic features	Physical qualities characterising the state of environment in water bodies of the World's Oceans. These features include temperature and s... more Physical qualities characterising the state of environment in water bodies of the World's Oceans. These features include temperature and salinity, electric conductivity, density, hydrostatic pressure, transparency, the range and character of tidal and other water level oscillations, the speed and direction of currents, the characteristics of waves and ice, etc.
	3552	oceanographic slide rule	A specially designed SLIDE RULE used for calculating the CORRECTION of thermal expansion of a deep sea REVERSING THERMOMETER.
	3553	oceanographic section	A successive series of oceanographic stations carried out in a specified direction.
	3554	oceanographic station	See STATION.
	3555	oceanographic survey	See SURVEY.
	3556	oceanography	The study of the SEA, embracing and integrating all knowledge pertaining to the SEA's physical boundaries, the chemistry and physics of SEA ... more The study of the SEA, embracing and integrating all knowledge pertaining to the SEA's physical boundaries, the chemistry and physics of SEA WATER, MARINE BIOLOGY, and SUBMARINE GEOLOGY. In strict usage oceanography is the description of the marine environment, whereas oceanology is the study of the OCEANS and related sciences.
	3557	oceanology	See OCEANOGRAPHY.
	3558	ocean station	As defined by the International Civil Aviation Organization, a specifically located area of ocean surface, roughly square and 200 NAUTICAL M... more As defined by the International Civil Aviation Organization, a specifically located area of ocean surface, roughly square and 200 NAUTICAL MILES on a side. An ocean station vessel on patrol is said to be 'on station' when it is within the perimeter of the area.
	3559	ocean station vessel (OSV)	Ship assigned to operate at the location of an OCEAN WEATHER STATION. Also called weather ship.
	3560	ocean water	Water having the physical-chemical characteristics of the OPEN SEA, where continental influences are at a minimum.
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