Posts Tagged ‘ocean’

Water in the ocean

Oceans – is primarily water, whose volume is equal to 1 billion 888 million km2, which accounts for 97% of all water on Earth. But it is not only a body of water that affects its grandness, I greatness. This is a huge amount of dissolved chemical compounds and a variety of particles that are suspended in, and inhabiting it Vod many living organisms. Presence in the ocean waters of chemical elements gives it a special physical properties that significantly affect the laws of their circulation in the “body” of the ocean creates the conditions for the development of special flora and fauna, and gives these waters features that fundamentally distinguish them from surface waters.
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With the thermometer in the ocean

To begin armed with a special deep-water thermometer and take readings at different depths of the ocean across its waters. (This oceanologists involved in virtually all scientific research expeditions.) Now let us see what features we could find.

The most common patterns are as follows. The uppermost layer of water, well stirred powerful ocean winds, has an almost identical vertical temperature. The thickness of this layer is typically 26-60 m, rarely – 100 m or more. Further, at the lower boundary of the homogeneous layer, the temperature spike is reduced. Oceanologists its called – the “layer jump”.  Underlying water column is characterized by further but more gradual decrease in temperature, an average of 17 to 7 C. The water is almost uniform in temperature, because depths of the oceans is mainly filled with the waters of the same origin, formed in the polar regions of Earth.
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Life in shallow water

Most of the "luxurious apartment in a " world's oceans are in shallow water areas – for example, in the shallow waters, atolls, continental shelves and shallow seas. The presence of hard bottom, lots of light and food creates ideal conditions for rapid development of a variety of lifestyles. Most forage in these areas due to several factors: the strong growth of large plants that are attached to the intake of necessary background for the development of phytoplankton nutrients by river waters, and also due to feature the coastal zone of the process – increase in nutrient-rich waters of the deep ocean seabed. However, in a noble family of luxury apartment dwellers are scandals. Are associated with unplanned outages at work generally well coordinated mechanisms of the food chain. During one of these catastrophic consequences of phenomena, where a very marked increase in the number of red algae poisons around all living creatures and the sea water is painted just a bloody color of Oceanology even set a special term – "red tide ". Overall, the essence of this phenomenon is as follows. The presence in the coastal waters of the unnecessary duplication of special vyzyvaetintensivnoe polurastitelnyh food, semi-animal organisms – dinoflagellates. Their numbers are so strong that the rest of the food chain can not be restricted, that is, simply can not do everything fast enough to eat. With the increasing number of dinoflagellates begin to obscure the light from each other, and each individual is trying to reach enlightenment surface.As result, their concentration is so high that the water in the coastal zone everything is painted in red or brown. Sometimes, the actual die, the algae produce toxic substances in the water, causing the mass death of fish and animals. This in turn leads to a very strong evolution of hydrogen sulfide gas (the "wonderful " smell that 'll probably know if you ever had to deal with stale egg), that from the blackened walls light homes in cities near the coast!

Tides

The inhabitants of the familiar phenomenon of the sea coasts, where twice a day (at least once) it reaches the coast, gradually filling the entire coastal strip, and then also gradually moves backward. So not only pleasant but also useful to run quickly through soil drying floor pool simultaneous display, and there you 'll find beautiful shells, starfish, crabs and other sea treasures. Such regular changes in sea level are called tides. What causes sea water to move to the shore? The mystery of the ordinary secrets, stunning ocean planet at this time lies not in its depths, or in the surrounding atmosphere, as far away in space. In accordance with the laws of the interaction of cosmic bodies, our planet pulls on the Moon and Moon – the Earth. the moon's gravity is so great that the ocean's surface is inclined towards him. The moon moves around Earth, and behind it, both on a leash, along the ocean tide. Beat on the coast – that tide. In no time, and the water behind the Moon moves away from the coast – the flow begins. For the same universal cosmic laws to raise the water of the seas and oceans of the moon helps the Sun, but due to the great distance from Earth, its pull is not enough to compete in this with our nearest neighbor cosmic. At high tide the sea is almost impossible to see – the height of the wave is small, about 1 m, and most importantly – this wave is very superficial, because slopes stretching for hundreds and even thousands of miles away. However, in shallow water tidal fluctuations in water level can increase and reach ten meters. Especially water usually rises in the bays. Especially those that have the shape of the funnel, ie, have a wide entrance, and then declined rapidly. By the beginning of a funnel of the head of the tidal wave is magnified, and the water can rise very high. For example, in the Atlantic Ocean in the Bay of Fundy (Northeast U.S.) the tide reaches a height of five-story building (16-17 meters) – the largest tidal range in the world, and Gizhigin Bay in the Sea of Okhotsk (Russia), as "word " low (12-14 m). However, the above values are more the exception than the rule. In the vast majority of the items that measure the level of the tides, which are small and rarely exceeds 2 m.

Salt Water Wonders

All the oceans and seas of our planet combined the concept of "Oceans. " For some properties of ocean waters are different from surface water. The main sign of treatment related to the oceans, is its high salinity, recalls the characteristic bitter-salty taste of the water while swimming in the sea. In the oceans contain 97% of all water on Earth. the land of the water provided by rivers, lakes and underground sources, are just over 1%, and concluded the glaciers around 2% water. But back to the ocean salinity. His role is not limited to the arrival of salty taste in the mouth when the sea voyage. Despite this, of course, very important: You must agree, is impossible to imagine that the novels of adventure so dear to all in childhood, without describing the flow of saltwater in the face of the protagonist, is firmly standing the bridge between the elements rage. But in the novels (For clarity, we can remember that something is happening with a layer of light oil, which always floats on the surface of the soup.) Therefore, a salty ocean water management of complex processes simple through our planet. The largest of the oceans – the Pacific – occupies one third of the Earth 's surface.Therefore is also called the Great. The name of "Silence was attached to it from the explorer Magellan, the first European swimming. Unusually good weather that accompanies long-term, 99 days crossing the ocean, and brought the great adventure of thought to call the Pacific. However, later explorers, found that this "quiet boy – only the most unpredictable and violent of all oceans on Earth. Especially often savage fury of its winds – Typhoon – and damaging waves and flooding have had to endure the west coast of America. The people of Japan and other Pacific islands, and the Chileans and Peruvians have to face the giant waves that has the Japanese name – the tsunami. Two other smaller islands, and Sebesi Sebuku located in the Sunda Strait near Krakatoa, were completely covered with a wave and were swept away not only all the people, but all over the floor. Waves in some places reached a height of 25-35 m. The port on the island of Java, a great ship broke anchor and left for 3 km to the earth at a height of 9 meters above sea level. Waves spread Sunda Strait Indian Ocean and the island of Ceylon has reached the height of 2.6 m, on the west coast of Australia – 1.8 m. The wave took place in the South Atlantic Ocean and reached Cape Horn at 28 h 31 min after the last, most powerful explosion. Come to her and the coasts of Europe: for example, in Le Havre, it was after 32 hours and 35 minutes, going the distance of 20,000 miles – exactly half the circumference of the globe.