Senior 1 Geography Sorting out the impact of ocean currents on the geographical environment

1.Affect the climate. Warm currents increase temperature and humidity, and cold currents cool down and reduce humidity.

When El Niño and La Niña occur, ocean currents change, affecting the climate in many parts of the world, including our country.

2.Impacts on living marine resources. In the sea area where cold and warm currents meet, the sea water is disturbed, which can bring the nutrients in the lower layer to the surface, providing sufficient nutrients for plankton, thus providing sufficient bait for fish, which is conducive to fish reproduction.

The convergence of cold and warm currents can also create water barriers, which can concentrate fish and often form large fishing grounds (e.g., North Sea fisheries, Hokkaido fisheries, Newfoundland fisheries). Large fishing grounds can also be formed where there is an upwelling current (e.g. Peruvian fishing grounds).

3.Affect the speed and safety of ocean navigation. Sailing with the currents speeds up, saves fuel, and saves time; Sailing against ocean currents slows down, wastes time, and wastes fuel.

Sea fog can easily form at the intersection of cold and warm currents, which is not conducive to sea navigation. Ocean currents moving south from the Arctic can also carry sea ice, threatening the safety of maritime navigation (such as the Titanic hitting an iceberg).

4.Impacts on the marine environment. In the case of marine pollution, the rapid dilution and purification of pollutants can be accelerated, and the scope of pollution can be expanded accordingly.

5.Affecting the global water and heat balance. The flow of ocean currents is accompanied by the exchange of water and heat.

1.Impact on the climate. Warm currents increase temperature and humidity, and cold currents decrease temperature and humidity.

2.Impacts on marine life. In the sea area where cold and warm currents meet, the sea water is disturbed, which can bring the lower nutrients to the surface, which is conducive to the abundance of fish and concentrates fish stocks, often forming large fishing grounds.

3.Impact on marine pollution. It can not only accelerate the dilution and purification of pollutants due to their rapid diffusion, but also expand the scope of pollution accordingly.

1) Ocean currents affect the climate along the coast.

The cold snap has the effect of cooling and dehumidifying, and the cold snap aggravates the drought in the area through which it flows. The western part of the tropical continent mostly has a tropical desert climate, which is related to the influence of ocean currents. The formation of the temperate oceanic climate in western Europe is closely related to the influence of the North Atlantic Current.

2) Ocean currents affect the distribution of marine organisms.

The confluence of warm and cold currents forms relatively large fishing grounds, such as the formation of the North Sea Fishing Grounds, Hokkaido Fisheries, and Newfoundland Fisheries. Larger fishing grounds may also form in upcold snaps, such as those in Peru.

3) Ocean currents affect navigation.

Saving time and fuel with the current, and extending the sailing time with the countercurrent.

4) Ocean currents affect marine pollution.

Ocean currents can reduce local pollution and expand the scope of pollution.

The influence of ocean currents on the geographical environment is described as follows: ocean currents increase the temperature difference between different sea areas at the same latitude.

The geographical environment is described as follows:

Geographical environment refers to the geographical location of a certain society and the total combination of various natural conditions associated with it, including climate, land, rivers, lakes, mountains, mineral deposits, animal and plant resources, etc. The geographical environment is an ecotone of energy located on the surface of the Earth, i.e., an interlaced zone of interaction between the lithosphere, hydrosphere, pedosphere, atmosphere, and biosphere.

Its thickness is about 10-30 km. The natural environment is a natural complex composed of natural elements such as rocks, landforms, soil, water, climate, and organisms. Geographical environment refers to the geographical location of a certain society and the sum of various natural conditions associated with it, including climate, land, rivers, lakes, mountains, mineral deposits, and animal and plant resources.

The geographical environment is an ecotone of energy, located on the surface of the earth, that is, the interlaced zone of interaction between the lithosphere, hydrosphere, pedosphere, atmosphere and biosphere, with a thickness of about 10-30 km. The natural environment is a natural complex composed of natural elements such as rocks, landforms, soil, water, climate, and organisms.

The part of the earth's natural environment that is directly related to human society. One of the material living conditions of society. It is not only different from the cosmic space environment and extraterrestrial environment as the conditions for the existence of the earth, but also different from the social and technological environment around people, but refers to the geographical location of a certain society and the topography, soil, climate, water system, mineral deposits, animals, plants and other ecological conditions in this position, etc., which is a factor of social material prerequisites.

The geographical environment is the necessary and regular material conditions for the existence and development of human society, and it is the place of people's activities, which provides the necessary material and energy resources for the material life of the society, and the advantages and disadvantages of the geographical environment conditions can accelerate or delay the development of society. However, geography cannot determine the nature of society and the direction of social development.

Ocean currents are divided into cold and warm ocean currents. The cold ocean current cools down and dehumidifies, the warm ocean current warms and humidifies, and if the cold and warm ocean currents meet, it will also cause sea fog. Ocean currents have an impact on a variety of physical, chemical, biological and geological processes in the ocean, as well as the formation and change of climate and weather over the ocean.

1. Dilution of pollution

The flow of ocean currents causes some sea areas to be seriously polluted, and the pollutants are rapidly dispersed, which also accelerates the dilution and purification of pollutants, which is of great significance to the restoration of the marine ecological environment.

2. Impact on climate

Ocean currents can be divided into warm and cold currents according to their nature. A warm current is the flow of sea water from a hot sea to a cold sea, while a cold current is the opposite. Warm currents have the effect of increasing temperature and humidity on land, and cold currents have the effect of decreasing temperature and humidity on land.

That is, the influence of ocean currents on the temperature on both sides of the continent at the same latitude is that the temperature of the continental coast through which the warm current passes is high, and it is easy to form an oceanic climate; However, the low temperature of the continental coastal area through which the cold current passes is more likely to form a continental or desert climate.

3. The formation of large-scale fishing grounds

On the whole earth, as long as there is a sea area where cold and warm currents meet, there will be large fishing grounds. Because the meeting of the two will cause the seawater to be disturbed, and then bring the lower nutrients to the surface, providing bait for fish, which is conducive to the reproduction of fish; The second is to make the two ocean currents meet here, and also make the fish in the hot sea area and the fish in the low sea area concentrate here, and then form a larger fishing ground.

1. The spread of marine pollution

When ocean currents pollute some sea areas, the rapid dispersion of pollutants with the flow of ocean currents will correspondingly expand the scope of pollution.

2. Threats to navigation

Heat and water vapor are transported upwards over the warm current, which increases the humidity of the air and makes it easy to produce precipitation. For example, first, the land breeze flows to the surface of the cold current during the day and forms advection fog; Second, at the intersection of cold and warm currents, the wind blows from the surface of the warm current to the surface of the cold current and forms advection fog. When sea fog forms, it can greatly reduce the visibility of ships traveling at sea, posing a threat to ship travel.

The warm current of the North Atlantic Ocean warms and humidifies, so that the port of Murmansk in the Arctic Ocean within the Polar Circle does not freeze in winter.

The cold snap in Western Australia cooled and dehumidified, spreading Australia's desert to the coast. ,2,In addition to the above answers,Add one,That is, the cooling and dehumidification effect of the Peruvian cold current on the coastal areas,2,Warm current,Cold current,Warm current brings warm and humid climate,Cold current brings cold and dry climate。 ,2,1 Columbus sailed to the Americas twice, the first time it took him 37 days, and the second time he took only 20 days.

It has to do with ocean currents. On his second visit, Columbus sailed along the Canary World Cool Currents and the North Equatorial Warm Current, which took little time.

2. Relationship between the North Atlantic Current and the climate of Northwest Europe.

3. Drifting bottles.

4. Sea fog 5. Sea ice: The Titanic unfortunately hit an iceberg and sank to the bottom of the Atlantic Ocean.

6. The formation of fishing grounds.

7. Zheng He always chooses when he goes to the West. 0,

Climate: The warm current has the effect of warming and humidifying, and the cold current has the effect of cooling and dehumidifying. Ocean Transport:

Slow speed and high energy consumption when sailing against the current; Sailing down the river is fast and has low energy consumption. Sea fog forms at the confluence of cold and warm currents, and ocean currents carry icebergs southward from the Arctic region to threaten navigation. Marine Environment:

Speed up the purification of seawater and expand the scope of marine pollution.

1. Climate

The warm current has the effect of warming and humidifying, and the cold current has the effect of cooling and dehumidifying.

1. When the coastal warm current passes, the continent will become mild and humid, for example, there is a North Atlantic warm current passing through western Europe, so the local temperate oceanic climate is warm and humid.

2. When the coastal cold current passes, the continent will become cold and dry, for example, the West Coast of the United States, there is a narrow desert area, which is due to the passage of the California cold current, which has the effect of cooling and dehumidifying the coastal climate.

2. Ocean transportation

1. When the ship sails with the current, it is like a tailwind, which can save fuel. Conversely, sailing against ocean currents will increase fuel consumption.

2. When the cold current and the warm current meet, it will be like the weather system mentioned earlier, causing clouds and rain, producing sea fog and obstructing the view of the ship. In the northern Atlantic, for example, sea fog prevails year-round because the Gulf Stream meets the Labrador Current.

3. Ocean currents carry sea ice from the Arctic region, which poses a great threat to the navigation safety of ships.

The flow of bottom water is called ocean current. Until the twentieth century, it was thought that there were no currents in the depths of the ocean. Later, a series of studies confirmed that there are on the bottom of the South Atlantic Ocean.

American scientist Matthew Fontaine Maury was the discoverer of ocean waterways. He studied in detail the direction of the winds and currents at sea from his nautical chronicles.