What are the forces that influence ocean currents? Describe their role in the fishing industry of the world. (250 words) [2022]

Ocean currents are driven by a variety of forces, including the Earth’s rotation, wind, and the temperature and salinity of the water.

One of the main forces that influence ocean currents is the Earth’s rotation. The Earth’s rotation causes the oceans to bulge at the equator and flatten at the poles, creating a system of currents known as the thermohaline circulation. This circulation helps to distribute heat from the equator to the poles, regulating the Earth’s climate.

Wind is another important force that influences ocean currents. The wind drives the surface currents of the oceans, pushing the water in a particular direction. The direction of the wind, as well as its strength and duration, determines the direction and strength of the surface currents.

The temperature and salinity of the water also play a role in the movement of ocean currents. Cold, dense water is heavier than warm, less dense water and tends to sink to the bottom of the ocean. This creates a system of currents known as the overturning circulation, which helps to distribute heat and nutrients throughout the oceans.

In the fishing industry, ocean currents play a significant role in determining the distribution and abundance of certain fish species. Some fish species, such as tuna and mackerel, are found in areas with strong surface currents, while other species, such as cod and haddock, are found in areas with weaker currents. Ocean currents also play a role in the distribution of plankton, which is an important food source for many fish species. Understanding the forces that influence ocean currents and their effects on fish populations is important for the sustainable management of the world’s fisheries.

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