The smallest ocean in the world

Which is the smallest ocean in the world? Let me show you!

The smallest ocean in the world

The smallest ocean in the world is the Arctic Ocean, also known as the Arctic Ocean, which is the smallest, shallowest and coldest ocean in the world. Roughly centered on the Arctic Circle, it is located at the northernmost part of the earth, surrounded by Eurasia and North America, and there is a narrow Bering Strait communicating with the Pacific Ocean. Connected with the Atlantic Ocean through the Greenland Sea and many straits, it is the smallest ocean in the world, with an area of only 6,543,804,750 square kilometers, less than 654.38+00% of the Pacific Ocean. Its depth is1097m, and its deepest point is 5527m. Ancient Greece once called it "the ocean facing Ursa major". 1845, named by the Geographical Society of London, UK, translated into Arctic Ocean in Chinese. Mbth Arctic comes from Greek, which means the ocean facing Ursa major. ) 20 12 On August 25th, the sea ice area of the Arctic Ocean reached the smallest in the observation history.

Arctic Ocean, mbth comes from Greek, which means the ocean facing Ursa major. 1650, German geographer B. Varenius first divided it into an independent ocean called the Great Beiyang; 1845, which was named Arctic Ocean by the Geographical Society of London. It was changed to the Arctic Ocean because it is at the northernmost part of the four oceans, and because the climate in this area is extremely cold and the surface of the ocean is covered with ice all the year round, so people call it the Arctic Ocean. Its area is 14788000 square kilometers, which is114 in the Pacific Ocean, 1/7 in the Atlantic Ocean and 1/6 in the Indian Ocean, accounting for 4. 1% of the world's ocean area. The average water depth of the Arctic Ocean is 1225m, which is 1/3 of that of the Pacific Ocean. The maximum water depth is 5527 meters, which is less than 1/2 of the Pacific Ocean. More than 2/3 of its area belongs to the underwater edge of the mainland, that is, there is a very broad continental shelf around the Arctic Ocean.

natural environment

The coastlines of all continents and islands in the Arctic Ocean are tortuous, and there are broad continental shelves along the coasts of Asia and North America. The shelf of the Arctic Ocean is developed, with the maximum width exceeding 1200 km. The center runs through the Lomonosov Ridge, from Novosibirsk Islands in Asia across the Arctic to the north shore of Greenland in North America, and the peak is generally1000-2000m away from the water surface. The depth of the basin is between 4000 and 5000 meters. There are many mounds and depressions in the middle of the Arctic Ocean. The arctic ocean has a cold climate, and most of the ocean surfaces are frozen all the year round. The average temperature in Leng Yue in Arctic waters can reach minus 20 to minus 40℃, and it is usually below 8℃ in warm season. The average annual precipitation is only 75-200mm, and the Greenland Sea can reach 500mm. There are often violent storms in cold seasons. Affected by the North Atlantic warm current, the water temperature and air temperature in the Nordic sea area are higher, with more precipitation and lighter ice conditions. There is a lot of sea fog in warm seasons, and it is foggy every day in some months, even for a few days and nights. In the Arctic sea area, the water temperature from the water surface to the depth of 100-225m is about-1 ~- 1.7℃, and the water temperature in coastal areas varies greatly throughout the year, ranging from-1.5 ~ 8℃. In the Nordic waters, the water surface temperature is between 2- 12℃ all the year round. In addition, in the depth of Arctic Ocean 100-250 m to 600-900 m, there is a warm water layer in the middle from the North Atlantic warm current, and the water temperature is 0- 1℃. The Arctic Ocean is one of the worst areas in the world. Because it is located in the northernmost part of the earth, there are unique extreme days and nights every year. Every year 10 to March, and the winter half year is "long night"; From April to September, summer is a "long day". After a day and a night, it is another year. Every long night, nature only has beautiful moonlight and colorful aurora, which brings light and comfort to people. On the vast ice sheet, colorful aurora bursts, like suddenly rising holiday fireworks, illuminating half the sky; He sometimes dances in the air like a colorful strip, sometimes like a flower curtain hanging in the sky, and sometimes like a searchlight pointing directly at the sky. But the beauty of the aurora can't hide the harsh climate of the Arctic Ocean. Thousands of miles of ice, year-round snow, cold weather, many icebergs. The sea ice here is about 3 million years old.

In winter, 80% of the sea surface is frozen, and even in summer, more than half of the sea surface is occupied by ice. But even in such a cold world, seaweed is still full of vitality, and seals and walruses often haunt the ice water; Powerful polar bears are experts in fishing, and cunning arctic foxes often follow behind, trying to eat the remaining bones and meat for nothing. Flocks of fish and snow fish grow fat and strong; Eskimos who are good at building houses with ice and snow lead a heroic hunting life. Arctic aborigines and Inuit have lived and multiplied here for generations, with a history of at least 4,000 years. In the past long years, they lived a free and self-sufficient life, without words and money. With the passage of time, Inuit people began to accept modern civilization, and their lives have undergone tremendous changes.

The Arctic Ocean current system is composed of Norwegian warm current, Spitsbergen warm current, North Point warm current and East Greenland cold current, and it is a branch of North Atlantic warm current. The Arctic Ocean current enters the Atlantic Ocean, and under the action of geostrophic drift, the current deviates to the right, which is called the East Greenland cold current along Greenland and the Labrador cold current along Labrador Peninsula.