Difference Between Ocean and Ocean 10, Difference Between Ocean and Ocean

Our planet is surrounded by oceans, and 71% of the Earth's surface is occupied by oceans. Usually, people call the sea and the ocean together, but in fact, there is a difference between the sea and the ocean.

The ocean is generally far away from the mainland, separated by peninsulas, islands, and archipelagos, and the water area is very vast, with a water depth of more than 2,000 meters. The nature of ocean water is relatively stable, not affected by the continent, the salinity is generally stable at 1000 grams, and the dissolved salts in ocean water are about 35 grams, with little change; The ocean water is blue, highly transparent, has an independent movement system, and is not disturbed by the continents. The topography of the ocean floor is dominated by ocean basins and ridges.

This is the character of the ocean. For example, in eastern Asia, the Japanese archipelago, the Ryukyu Islands, the island of Taiwan, and the Philippine Islands are separated by the ocean and the sea, with the ocean to the east and the sea to the west.

The sea is the part of the ocean close to the continent, with the continent on the inner side and the ocean on the outside, and the middle is bounded by archipelago and islands, and the water depth is within 2,000 meters, which is much smaller than the ocean. Temperature and salinity are greatly affected by the mainland, and there are often obvious seasonal changes, and the salinity is generally low. The sea is less transparent, its movement is disturbed by the continents, there is no independent system, and there are seasonal changes.

The seabed topography is dominated by shelf and slope.

Of course, the oceans are interconnected and form an indivisible whole, and the word ocean represents this whole.

However, in the vast waters of the west coast of the Americas, there are no islands or archipelagos between the oceans and the sea, and this situation is divided according to the topography of the seabed, and the waters occupied by the continental shelf and slope are called "seas", and the waters beyond the sea are "oceans".

Ocean, which generally refers to the sea, used to refer to the center of the sea, now refers to the vast area on the earth's surface covered by water.

The ocean, the earth's surface is divided by the major landmasses into vast bodies of water that communicate with each other.

J two-way trading, T 0, margin trading, that's it, the leverage ratio is smaller than **, which is more suitable for beginners.

1. Different meanings: The sea, also known as the "sea", refers to a large area of saltwater connected to the "ocean", that is, the marginal part of the ocean. An ocean is a particularly large area of water on the Earth's surface.

2. Different regions: the sea is close to the continent, affected by the continent, the river, the climate and the season, the temperature, salinity, color and transparency of the sea water are affected by the land, and there are obvious changes. The ocean is connected to the sea, the temperature and salinity of the water are not affected by the continent, the average salinity is 35%, the water color is high, the transparency is large, and there is an independent tidal system and ocean current system.

Sea: The sea, also known as the "sea", refers to a large area of saltwater connected to the "ocean", that is, the ancillary part of the edge of the ocean. Usually large inland salt lakes and large saltwater lakes that are not connected to the sea, such as the Caspian Sea and the Sea of Galilee, are not "seas".

The role of the sea for humanity is not only to provide an abundance of available resources, but also to benefit humanity. The sea is at the edge of the ocean and is a subsidiary part of the ocean. The sea covers about 11% of the ocean's area, and the sea depth is relatively shallow, with an average depth ranging from a few meters to 3,000 meters.

Due to the proximity of the sea to the mainland, affected by the continent, the river, the climate and the season, the temperature, salinity, color and transparency of the water have obvious changes, and the sea water in some sea areas sometimes freezes in winter, and the salinity of the sea water near the river estuary will become thin and the transparency is poor. In contrast to the ocean, the sea does not have its own independent tides and currents.

The difference between the ocean and the sea is mainly reflected in the following aspects:

First, the size of the range.

The extent of the ocean is generally larger than that of the sea**, such as the Arctic Ocean and the South Atlantic, and the area is usually more than a few million square kilometers. The extent of the sea is smaller, such as the East China Sea and the North Sea, and the area is usually between hundreds of thousands and millions of square kilometers. So from the point of view of the size of the range, **the ocean is larger than the sea**.

2. Differences in depth.

The average and maximum water depth of the ocean are generally greater than those of the sea. For example, the average water depth of the Pacific Ocean is 4,267 meters, and the maximum depth can reach 10,921 meters; The average depth of the Atlantic Ocean is 3,741 meters, with a maximum depth of 8,486 meters. The average water depth in the East China Sea is only 370 meters, and the deepest water depth is 1,302 meters.

So from the point of view of depth, **the ocean is deeper than the sea**.

3. Differences in biological resources.

Due to the wider range and greater depth of the ocean, the biological resources of the ocean are generally richer than those of the sea. The ocean encompasses a wide range of ecosystems, from shallow coastal waters to deep sea areas, and is more diverse. For example, there are as many as 200,000 species of organisms in the Pacific Ocean, far exceeding the more than 50,000 species in the East China Sea.

Fourth, geographical differences.

Geographically, the ocean usually surrounds continents and oceans, and is located on the outer side of the sea, such as the Pacific Ocean surrounding Southeast Asian seas, the Atlantic Ocean surrounding the North Sea, etc. The sea is usually located on the periphery of the continent and is connected to the mainland, such as the East China Sea, which is located in the eastern seas of China, **embedded in the ocean**.

Therefore, the difference between the ocean and the sea lies in the size, depth, biological resources and geographical location, but both are a kind of ocean, which is a continuous body of water with no obvious boundary. The ocean is more vast and far-reaching than the sea, and the ecological environment is more complex.

The ocean is the central part of the ocean and the main body of the ocean. The total area of the world's oceans accounts for about 89% of the ocean area. The water depth of the ocean is generally more than 3,000 meters, and the deepest depth can reach more than 10,000 meters.

The ocean is far away from the land and is not affected by the land. Its hydrology and salinity do not change much. Each ocean has its own unique system of currents and tides.

The water of the ocean is blue in color, with great transparency, and there are very few impurities in the water. There are 4 in the world, namely the Pacific Ocean, the Indian Ocean, the Atlantic Ocean, and the Arctic Ocean.

The sea, on the edge of the ocean destroyer, is an appendage of the ocean. The sea covers about 11% of the ocean, and the water depth of the sea is relatively shallow, with an average depth of several meters to two or three thousand meters. The sea is close to the mainland, and the temperature, salinity, color and transparency of the sea are affected by the land, and there are obvious changes in the temperature, salinity, color and transparency of the sea.

A strait is a narrow waterway that connects two seas or oceans between two landmasses. It is generally at a greater depth and has a steeper current. The geographical location of the strait is particularly important, not only as a major transportation route and shipping hub, but also as a battleground for soldiers.

Therefore, people often call it "sea corridor" and "** waterway".

1.The middle part of the different oceans is called the ocean, which accounts for about 89% of the total area of the ocean, and its depth is large, generally more than two or three thousand meters, and the temperature, salinity, and color of the sea are not affected by the continents, and there are independent tide and current systems. The marginal part of the ocean, called the sea, is shallow, generally within two or three thousand meters, and accounts for about 11% of the total area of the ocean.

The sea does not have an independent tidal and current system, the water temperature is affected by the continent and has significant seasonal changes, the salinity is also more obviously affected by the rivers and climate of the nearby continents, and the water color is more yellow-green and less transparent. Different locations: Depending on where the sea is located, it can be divided into two types: the marginal sea and the Mediterranean.

The part of the ocean close to the continent, separated by islands and peninsulas, and the smooth exchange of water is called the marginal sea, such as the East China Sea and the South China Sea. The sea between the continents is called the Mediterranean, such as the Mediterranean, the Caribbean Sea, etc. If the Mediterranean Sea extends into the interior of a continent, only a narrow waterway communicates with the sea, it is also called an inland sea, such as the Black Sea, the Baltic Sea, and the Bohai Sea in China.

Different sizes, different positions, different depths

1. The size is different.

The ocean and the sea are small. The ocean accounts for about 89% of the total area of the ocean, and is the main body of the entire ocean, and it is a veritable big brother; The sea accounts for about 11% of the total area of the ocean and is a subsidiary part of the ocean, so it can only be a small brother.

2. The location is different.

The sea is close to the land, while the ocean is far from the land. Due to the direct impact of land-based rivers and human activities, the water temperature, salinity, water color and transparency of the sea are significantly different from those of the ocean. For example, the Yellow Sea is named after the yellow water that once carried a large amount of sediment into it. The salinity of the Bohai Sea at higher latitudes is reduced due to the injection of large amounts of fresh water from the Yellow River, and a large area freezes over the sea every winter.

However, because the ocean is far from the land, it is not directly affected by the land water body, and there are fewer impurities and pollution, and it is clearer. Many waters in the ocean are up to tens of meters in transparency, with the Sargassum Sea in the Atlantic Ocean being the most transparent, up to 72 meters deep.

3. The depth is different.

The sea is shallow and the ocean is deep. Due to its proximity to land, the sea is usually located on the continental shelf, so the water depth is very shallow, for example, the average water depth of the Bohai Sea is only 18 meters, the average water depth of the Yellow Sea is only 90 meters, and the average water depth of the East China Sea is only 349 meters. In addition to the Arctic Ocean, where the average depth is about 1,200 meters, the average depth of the other three oceans is between 3,000 meters and 4,000 meters. Due to the shallow seawater, there is sufficient sunlight transmission from the sea surface to the bottom of the sea, coupled with the large amount of nutrients carried by the rivers entering the sea, the sea provides a suitable environment for the growth of marine life.

Therefore, most of the fishing grounds are distributed in the sea, such as the Zhoushan fishing ground. Of course, there are also many fishing grounds in the ocean, and due to the depth of the ocean, when the cold and warm currents meet, the cold water at the bottom will bring rich nutrients, resulting in rich fishing grounds, such as the Hokkaido fishing grounds and Newfoundland fishing grounds are located in the confluence of cold and warm currents.

The relationship between the sea and the ocean

The sea and the ocean are interconnected, and the sea is connected to the ocean through straits between land or islands. The oceanic circulation enters the sea through these straits, thus enabling the exchange of water bodies between the sea and the ocean. The ocean circulation is like the arteries and blood vessels of the human body, which can continuously inject a large amount of fresh water into the sea. Ocean currents, on the other hand, act like veins, slowly transporting seawater back to the ocean.

Both the sea and the ocean have a significant impact on the global climate. For example, the southeast monsoon, which blows towards the land of China in summer, is warm and humid due to the influence of the sea. The climate effects of the ocean are more profound than those of the ocean, and the warm pool in the western Pacific (generally the warm sea area with a multi-year mean sea surface temperature above 28 in the tropical western Pacific and the eastern Indian Ocean) is the engine of global climate change.

It directly affects global climate change through the Walker and Hadri circulations. When the warm currents of the western Pacific warm pool move eastward to the eastern Pacific Ocean, it causes the sea temperature off the coast of Peru to become too high, and the fish in Peruvian fishing grounds die in large numbers, which is known as the El Niño phenomenon. At this time, the strengthening of the Hadri circulation caused more monsoons, typhoons and rainfall in China, resulting in severe flooding in southern China.

Categories: Education, Science, >> Science & Technology.

Problem description: Excuse me, what is the difference between the sea and the ocean?

Analysis: The difference between sea and ocean is mainly in depth.

The average depth of the ocean is about 4,000 meters, and the deepest depth is more than 10,000 meters.

For example, the average water depth of the Bohai Sea is 18 meters, and the maximum water depth is 70 meters; The average depth of the Yellow Sea is two to three hundred meters. The South China Sea is special, its average water depth is about 1000, and the maximum water depth is about 5,000 meters (this data is not very clear), which is also the reason why China's first ocean drilling was carried out in the South China Sea (because the crust of the South China Sea is closer to the ocean crust, and the Bohai Sea, East China Sea and Yellow Sea are close to the continental crust, the voyage of this drilling is ODP184, and the chief scientist is Wang Pinxian of the School of Oceanography of Tongji University.

Of course, the division of Hyde is also related to the contact of the marginal land.