Question

Describe one effect of each of the following three ocean currents.


(1) Labrador Current of the Atlantic Ocean.
(i) The Kuroshio current
(iii) Oyashio Current of the Pacific Ocean.
​

Answer 1

Explanation:

The Labrador Current is a cold current in the North Atlantic Ocean which flows from the Arctic Ocean south along the coast of Labrador and passes around Newfoundland, continuing south along the east coast of Canada near Nova Scotia. Near Nova Scotia, this cold water current meets the warm northward moving Gulf Stream

The Kuroshio, also known as the Black or Japan Current or the Black Stream, is a north-flowing, warm ocean current on the west side of the North Pacific Ocean.

Oyashio, also known as Oya Siwo, Okhotsk or the Kurile current, is a cold subarctic ocean current that flows south and circulates counterclockwise in the western North Pacific Ocean.

Answer 2

Explanation:

1.)The Labrador Current is a cold current in the North Atlantic Ocean which flows from the Arctic Ocean south along the coast of Labrador and passes around Newfoundland, continuing south along the east coast of Canada near Nova Scotia. Near Nova Scotia, this cold water current meets the warm northward moving Gulf Stream. The combination of these two currents produces heavy fogs and has also created one of the richest fishing grounds in the world.

The Labrador Current has a tendency to sometimes go farther south and/or east than normal. This can produce hazardous shipping conditions, for it can carry icebergs into an area of the Atlantic where they are not usually found. The current has been known to transport icebergs as far south as Bermuda and as far east as the Azores. After the sinking of RMS Titanic in 1912, the International Ice Patrol was set up to track icebergs, including those found in areas of the ocean where they are rarely located.

♥️ocean currents.....

An ocean current is a continuous, directed movement of sea water generated by a number of forces acting upon the water, including wind, the Coriolis effect, breaking waves, cabbeling, and temperature and salinity differences. Depth contours, shoreline configurations, and interactions with other currents influence a current's direction and strength. Ocean currents are primarily horizontal water movements.

Ocean currents are important in the study of marine debris, and vice versa. These currents also affect temperatures throughout the world. For example, the ocean current that brings warm water up the north Atlantic to northwest Europe also cumulatively and slowly blocks ice from forming along the seashores, which would also block ships from entering and exiting inland waterways and seaports, hence ocean currents play a decisive role in influencing the climates of regions through which they flow. Cold ocean water currents flowing from polar and sub-polar regions bring in a lot of plankton that are crucial to the continued survival of several key sea creature species in marine ecosystems. Since plankton are the food of fish, abundant fish populations often live where these currents prevail.

Ocean currents are also very important in the dispersal of many life forms. An example is the life-cycle of the European Eel.

2.)When two currents collide, they create eddies. Phytoplankton growing in the surface waters become concentrated along the boundaries of these eddies, tracing out the motions of the water.

The heat, which is carried north by this flow, has an effect on climate of the adjacent land areas. Water temperature offshore strongly influences cloud cover and rainfall. On the southern coast of ALASKA, the effect of the Kuroshio Extension creates a somewhat more temperate climate.

3.)The current has an important impact on the climate of the Russian Far East, mainly in Kamchatka and Chukotka, where the northern limit of tree growth is moved south up to ten degrees compared with the latitude it can reach in inland Siberia. The waters of the Oyashio Current form probably the richest fishery in the world owing to the extremely high-nutrient content of the cold water and the very high tides (up to 10 metres (33 ft)) in some areas.

During glacial periods, when lower sea level exposed the Bering land bridge, the current could not flow in the regions the Oyashio affects today. The level of cooling with the onset of glacial conditions (after an interglacial) was much less than in other areas of the Earth at similar latitudes. This allowed Tōhoku and Hokkaidō – the only areas of East Asia with enough snowfall to potentially form glaciers – to remain unglaciated except at high elevations during periods when Europe and North America were largely glaciated. This lack of glaciation explains why, despite its present climate being much colder than most of Europe, East Asia has retained 96 percent of Pliocene tree genera, whereas Europe has retained only 27%.[citation needed]

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