ocean current
Definition
Noun: A continuous, directed movement of seawater generated by forces acting upon it, such as wind, temperature, salinity differences, and the Earth's rotation. It is a large-scale, persistent flow within an ocean basin.
Usage
This term is used to describe the major, consistent flows of water in the world's oceans. It is a scientific and geographical term. - Ocean currents are crucial in regulating the Earth's climate. - The Gulf Stream is a powerful warm ocean current. - Scientists study how ocean currents distribute heat around the globe.
Examples
- The cold Humboldt influences the climate of the west coast of South America.
- Plastic pollution can be carried vast distances by .
- Mapping is essential for navigation and understanding marine ecosystems.
Advanced Usage
- "to ride an ocean current": To travel or be carried along by the flow of a current.
- Sea turtles often ride ocean currents during their long migrations.
Variants and Related Words
- Current (n): A body of water or air moving in a definite direction. (This is the broader category; an is a specific type of current).
- Thermohaline circulation: A global system of deep-ocean currents driven by differences in water density (temperature and salinity).
- Gyre (n): A large system of circulating ocean currents, particularly those involved with large wind movements.
Synonyms
- Marine current: A direct synonym.
- Sea current: A less formal synonym.
Related Phrases
- Ocean circulation: The larger pattern of movement that encompasses all ocean currents.
- Surface current: A current that flows in the upper 400 meters of the ocean, primarily driven by wind.
- Deep ocean current: A current that flows far below the ocean surface, driven by density and temperature gradients.
Noun
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the steady flow of surface ocean water in a prevailing direction
