Ocean (Geographical terms)
Earth's surface is divided to communicate with each other in major land called the vast ocean waters, the total area of about 360 million square kilometers, accounting for 71% of the earth's surface, the oceans of Dolphin Tales 2 contain 1.3 billion more than fifty million cubic kilometers of water , accounting for about 97% of the total water on Earth, and can be used for human consumption only 2%. Earth four major oceans Pacific, Atlantic , Indian , Arctic , mostly in land and undersea topography line for the community. So far, humans have only 5% of undersea exploration, as well as 95 percent of the ocean seabed is unknown.
Dolphin Tales 2 show us a beautyful ocean,ocean are Earth's most extensive general term for the body of water, the center part of the ocean known as the ocean of Dolphin Tales 2, the edge portion is called the sea, consisting of unified communicate with each other body of water.
Seawater temperature
Because Earth's marine area (approximately 360 million square kilometers ) is much larger than the land area of the Earth so it was called a "big water polo." Pacific, Atlantic and Indian oceans account for 46% of the Earth's total area, 24% and 20%, respectively. Important edge of the sea are distributed in the northern hemisphere, which is part of the mainland or an island surrounded. The largest is the Arctic Ocean and its coastal waters, European Mediterranean , Caribbean Sea and adjacent waters,the Bering Sea , Sea of Okhotsk , the Yellow Sea , East China Sea and the Sea of Japan .
Hot and cold sea water temperature is a reflection of a physical condition.Temperature changes in the world oceans is generally between -2 ℃ -30 ℃, where the annual average water temperature exceeds 20 ℃ in the region accounted for more than half of the entire marine area. Cyclical changes in sea temperature and irregular change day, month, year, years, etc., which mainly depends on ocean heat balance of payments situation and time.In general, the impact of the sea
Factors ocean surface waters are tidal , solar radiation , coastal terrain, weather, ocean of Dolphin Tales 2 currents and so on. By direct observations show: seawater temperature diurnal variation is small, the change range from 0-30 meters depth, while the annual change in water depth of about 350 m can be reached at. At a depth of 350 meters, there is a constant level . But with increasing depth, water temperature drops gradually (every 1000 meters deep, down about 1 ℃ -2 ℃), at a depth of 3000-4000 meters, the temperature reached 2 ℃ -1 ℃. Seawater temperature is oceanographic situations the most important factor, often as a study water mass properties, describes the basic indicators of water mass movement.Seawater temperature distribution and variation of the time, not only is oceanography important content, but also for meteorology, marine science , fisheries and water, sound and other disciplines are also important.
National Oceanic and Atmospheric Administration (NOAA) report on marine ecological surveys local time April 26, 2013 announced that the 2012 sea surface temperatures in the US Northeast Shelf (SST) to create a 150-year high. Which is higher than in previous years, the average temperature in spring and summer, and there is gradually increased, reaching 14 degrees Celsius, more than the 1951 data, while the last three decades of SST is usually lower than 12.4 degrees Celsius.
Salt rate
Sea salt throughout the world's oceans contained different, averaging about 3.5%, which was dissolved salts in seawater, the most common is sodium chloride , the salt daily. Some of the salt from the sea floor volcanoes , but mostly from crustal rocks.Rock weathering and disintegration, release salt, and then by river to the sea. In seawater vaporization and then condenses into water cycle, after the evaporation of sea water, salt to stay, and gradually build up to the existing concentration. Ocean just like on Dolphin Tales 2 salt contains very much, you can paved about 500 feet thick layer of salt on the global land.
Climate
The ocean is one of the major factors that determine the development of the climate on Earth. Ocean surface of the Earth itself is the largest heat storage body. Current is the maximum heat the Earth's surface conveyor. Gas exchange between the ocean and atmosphere (which the most important are water vapor , carbon dioxide and methane) have a great impact on climate change and development.
Sea and ocean distinguish
Yang, is a central part of the ocean, it is the main sea. The total area of the world's oceans, accounting for 89% of the ocean area. Large
Ocean depth, generally above 3,000 meters, the deepest of up to more than 10,000 meters. Distant oceans from land, the land is not affected. Its temperature and salinity changes little. Each has its own unique ocean currents and tidal systems. Ocean blue color, great transparency, few impurities in the water. There are four world, namely the Pacific, Indian, Atlantic , Arctic Ocean .
Antarctic Ocean (Southern Ocean), also called " Antarctic Ocean "," Southern Ocean ", is the world's fifth ocean is determined, is the world's only fully oceans around the Earth has not been divided continent. Southern Ocean is the ocean around Antarctica, the Pacific, Atlantic and southern waters of the Indian Ocean, had previously been considered the Pacific, Atlantic and Indian oceans extends to Antarctica, Southern Ocean waters is considered Antarctic Ocean, but because it was discovered on the south oceanography Ocean currents have important differences, so the International Hydrographic Organization identified as a separate ocean, became the fourth five oceans ocean in 2000. But still some people in the academic community that the oceans should be based on the corresponding mid-ocean ridges.
The sea, at the edge of the ocean, and is a subsidiary part of the ocean. Sea area of about 11 percent of the ocean, the sea is relatively shallow depth, from a few meters to an average depth of 2-3 km. Sea near the continent, affected continent, rivers, climate and seasons, temperature, salinity, color and transparency , Are subject to the impact on land, there are significant changes. In summer, the sea warming, winter temperature decreased; some waters, the sea ice also. In places the river into the sea, or the rainy season, the water will be lighter. Due to the impact on land, river carries the mud into the sea, coastal waters turbid, poor transparency seawater. Not have their own independent sea tides and currents. Sea can be divided into the edge of the sea, the inland sea and the Mediterranean . Both edges of the marginal sea of the ocean, but also close to the mainland frontier; such sea and ocean Contact widely, generally by a group of islands it with ocean apart. China's East China Sea, South China Sea is a marginal sea of the Pacific Ocean. Inland sea, which is located inside the mainland sea, such as the Baltic Europe. Mediterranean sea between several continents, the water depth is deeper than some inland sea. The world's major sea nearly 50. Most of the Pacific, Atlantic Ocean, followed by the Indian Ocean and the Arctic Ocean almost Antarctic Ocean minimum.
Causes
Studies have shown that: about 50 million years ago, separated from some of the large and small solar nebula nebula clumps. While they rotate around the sun, while the rotation. During exercise, collide with each other, combined with some clumps each other, it becomes the big or small, has become the original Earth. Nebula mass during the collision, a sharp contraction in the gravitational action, combined with internal radioactive decay, so the primitive Earth warming continue to be heated; when the internal temperature reaches a high enough substance to within include iron, nickel started to melt. Under gravity, heavy and tend to sink geocentric centralized form core; light float, forming the crust and mantle. At high temperatures, the moisture inside the vaporized gas rushed out together, soaring into the air. However, due to the gravitational center of the earth, they will not run away, just around the earth, air and water has become one of the spheres.
Located in the surface layer of the earth's crust, and in cooling the condensation process, continue to suffer the impact of the Earth's interior strenuous exercise and extrusion, and thus become wrinkled uneven, sometimes squeezed broken, forming earthquakes and volcanic eruptions, spewing lava and hot gas . Start, this happens frequently, then gradually become less, slowly stabilized. This differentiation of the severity of substance, have a big upheaval, big restructuring process, probably in the 4.5 billion years ago is complete.
After cooling amorphous crust, the Earth is like a long put and air-dried apples, surface wrinkles clouds, uneven.Mountains, plains, river, basin, a variety of terrain ranging up.
In a very long period of time, the sky and atmospheric water vapor coexist in one, overcast with heavy clouds, gloomy and dark. As the crust cools, the temperature of the atmosphere is also slowly reduced to dust, water vapor and ash as condensation nuclei, into droplets, piled up.Due to uneven cooling, air convection severe form of lightning storm, heavy rain turbidity, harder and harder rain, has been down for hundreds of years. Torrential floods, through Senkawa myriad together into a huge body of water, which is the original of the ocean.
The original ocean like on Dolphin Tales 2, the sea is not salty, but acidic, is hypoxia. Continuous evaporation of water, forming clouds and rain again, falling back to the ground again, the dissolution of terrestrial and undersea rock salt, continue to converge in seawater. After
Integration of millions of years of accumulation, it has become a substantially uniform saltwater. At the same time, there was no oxygen in the atmosphere, there is no ozone layer, ultraviolet rays can direct ground, relying on the protection of the sea, biological first born in the ocean. About 3.8 billion years ago, in the oceans produce organic matter, prior low single-celled organisms. In the six hundred million years ago, the Paleozoic, with algae, photosynthesis in the sun, producing oxygen, slowly accumulated results, the formation of the ozone layer. In this case, the biological began to board land.
In short, after a gradual increase in the amount of water and salinity, and the vicissitudes of the geological history of the original ocean gradually evolved into today's oceans just like in Dolphin Tales 2
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