What are the major ocean basins?
The five ocean basins from largest to smallest are: the Pacific, Atlantic, Indian, Southern, and Arctic. The Pacific Ocean is the largest and deepest ocean in the world. There are five major subdivisions of the world ocean: the Pacific Ocean, Atlantic Ocean, Indian Ocean, Southern Ocean, and Arctic Ocean.
Click tue see full answer. Considering this, how are ocean basins formed? An ocean basin is formed when water has covered a large portion of the Earth's crust. Over a ocexn period of time, an oceanic basin can be created by the spreading of the seafloor and the movement of tectonic plates. Furthermore, what are the 5 oceans? Here are arre 5 Oceans of the World with a description of each: Pacific Ocean. The Pacific Ocean is the largest of the oceans covering around basinx third of the Earth's surface.
Atlantic Ocean. The Atlantic Ocean is the world's second largest ocean. Indian Ocean. Arctic Ocean. Southern Ocean.
Fun Facts about the Ocean. The Pacific Oceanwhich occupies about one-third of Earth's surface, has the largest basin. Its basin also has the greatest average depth at approximately 14, feet 4, meters. Using other numbers they could find the exact location of their school ard home.
The five ocean basins from largest to smallest are: the Pacific, AtlanticIndian, Southern, and Arctic. The Pacific Ocean is the largest and deepest ocean in the world. Which ocean is the largest? Pacific Ocean.
Why Pacific Ocean is shrinking? The Atlantic Ocean is still growing now, because of sea-floor spreading from the mid-Atlantic Ridge, while the Pacific Ocean is said to be shrinking because the sea floor is folding under itself or subducting into the mantle. What is the ocean known for? The ocean is a continuous body of salt whay that covers more than 70 percent of the Earth's surface. Ocean currents govern the world's weather and churn a kaleidoscope of life.
Humans depend on these teeming waters for comfort and survival, but global warming and overfishing threaten Earth's largest habitat. How deep the ocean is?
The average depth of the ocean is about 12, feet. The deepest part of the ocean is called the Challenger Deep and is located beneath the western Pacific Ocean in the southern end of the Mariana Trench, which runs several hundred kilometers southwest of the U.
Whta can be found on the ocean floor? Features how to get your child out of nappies at night the ocean wyat the continental shelf, slope, and rise.
The ocean floor is called the abyssal plain. Below the ocean floor, there are a few small deeper areas called ocean trenches. Features rising up from the ocean floor include seamounts, volcanic islands and the mid-oceanic ridges and rises. What is the difference between ocean and sea?
Seas are usually smaller and less deep than oceans. An ocean is a vast and a continuous frame of salty water that shelters almost 70 percent of the total earth's surface while a sea is a large body of saline water that occupies a greater part of the world's surface but is smaller than an ocean. What are four types of ocean floor? Basjns labels the parts such as: abyssal plain, continental slope, continental shelf, trenches, mid-ocean.
Why are the ocean basins full of water? Active ocean basins undergo changes mainly due to plate tectonics. When plates spread apart, they create gaps where magma from the earth's mantle can rise up and cool to form structures, such as oceanic ridges, which are continuous mountain chains located under the surface of the sea. What is the smallest ocean? Which ocean is the most shallow?
Who named the Atlantic Ocean? After the Titanomachy, Atlas was believed to hold up the sky for eternity. Are tge ocean basins connected? Are there 4 or 5 Oceans? Historically, there are four named ocean basins: the Atlantic, Pacific, Indian, and Arctic.
However, most ocfan - including the United Wht - now recognize the Southern Antarctic as the fifth ocean basin. The Pacific, Atlantic, and Indian are the most commonly known. How many seas are there on Earth? Seven Seas. Cant sleep what to do purple sheetrock waterproof? What are the names of Santa's 12 reindeers? How lcean do you have to wait after your permit to get your license in Georgia? Co-authors
Pacific Ocean Basin
A number of major features of the basins depart from this average—for example, the mountainous ocean ridges, deep-sea trenches, and jagged, linear fracture zones. Other significant features of the ocean floor include aseismic ridges, abyssal hills, and seamounts and guyots. Historically, there are four named ocean basins: the Atlantic, Pacific, Indian, and Arctic. However, most countries - including the United States - now recognize the Southern (Antarctic) as the fifth ocean basin. The Pacific, Atlantic, and Indian are the most commonly known. The Southern Ocean is the 'newest' named ocean basin. Oct 15, · Ocean Basins. About 70% of the planet's surface is made up of ocean basins, which are the regions that are below sea datmetopen.com areas hold the majority of the planet's water. In fact, it will.
Ocean basins can be described as saucer-like depressions of the seabed. They vary in size from relatively minor features of the continental margin to vast structural divisions of the deep ocean.
The largest ocean basins are 3 to 5 kilometers 2 to 3 miles deep and stretch from the outer margins of the continents to the mid-ocean ridges. Ocean basins cover approximately 71 percent of Earth's surface or about million square kilometers million square miles. Their average depth is 5, meters 16, feet , and the total volume is about 1.
In the North Polar Region, the nearly circular Arctic Ocean, almost landlocked except between Greenland and Europe, is considered the fifth ocean subdivision.
It is by far the largest and deepest of the world's oceans and contains more than half of its free water. In area, this represents about million square kilometers 59 million square miles. In comparison, the area of the continental United States, Hawaii, and Alaska is about 4 million square miles, sixteen times less in surface area. All the continents could fit into the Pacific basin. The Pacific is the oldest of the existing ocean basins, its oldest rocks having been dated at about million years.
The major features of the basin have been shaped by the phenomena associated with plate tectonics. The coastal shelf, which extends to depths of about meters feet , is narrow along North and South America, but is relatively wide along Asia and Australia.
The East Pacific Rise, a mid-ocean ridge, extends from the Gulf of California to a point west of the southern tip of South America, and rises an average of 2, meters 7, feet above the ocean floor. Along the East Pacific Rise, molten rock magma upwells from Earth's mantle , adding crust to the plates on each side of the rise. These plates are thus forced apart, causing them to collide with the continental plates adjacent to their outer edges. Under this tremendous pressure, the continental plates fold into mountain ranges and the oceanic plates are forced downward, forming deep trenches called subduction zones.
The stresses at these areas of subduction are responsible for the earthquakes and volcanoes that give the Pacific basin the name "Ring of Fire. The Atlantic Ocean is the second largest of Earth's five oceans, the most heavily traveled, and the most intensely studied, principally because of its importance in ship traffic between Europe and North America. This ocean's name is derived from Atlas, one of the Titans of Greek mythology. The Atlantic Ocean occupies about 20 percent of Earth's surface, representing approximately 75 million square kilometers 29 million square miles.
The Atlantic is divided into two nominal sections: the part north of the equator is called the North Atlantic; the part south of the equator, the South Atlantic.
The ocean is essentially an S-shaped north-south channel, extending from the Arctic Ocean in the north to the Southern Ocean in the south, and situated between the eastern coast of the American continents and the western coasts of Europe and Africa. The world ocean with five major subdivisions covers nearly three-fourths of Earth's surface. From left to right are the easily recognizable eastern Pacific, Atlantic, Indian, and western Pacific Oceans, whereas the Arctic Ocean top and Antarctic Southern Ocean bottom are less apparent.
The Atlantic Ocean has an average depth of 3, meters 12, feet. At its deepest point, in the Milwaukee Deep in the Puerto Rico Trench, the bottom is 8, meters 28, feet below the surface. The Atlantic began to form during the Jurassic period, about million years ago, when a rift opened up in the supercontinent of Gondwana, resulting in the separation of South America and Africa.
Along the American, African, and European coasts are the continental shelves of the Atlantic basin. These are areas of debris washed from the continents. Submarine ridges and rises extend roughly east-west between the continental shelves and the Mid-Atlantic Ridge, dividing the eastern and western ocean floors into a series of basins, also known as abyssal plains. The three subbasins on the American side of the Mid-Atlantic Ridge are more than 5, meters 16, feet deep: the North American basin, the Brazil basin, and the Argentina basin.
The break in the ridge at the equator, called the Romanche furrow, is important because it gives the deep ocean water a gap to flow through, which influences the currents and temperature of the Atlantic Ocean.
The Indian Ocean is the third largest of the five oceans. It is bounded on the west by Africa, on the north by Asia, on the east by Australia and the Australasian islands, and on the south by the Southern Ocean. No natural boundary separates the Indian Ocean from the Atlantic Ocean, but a line about 4, kilometers 2, miles long, connecting Cape Agulhas at the southern end of Africa with Antarctica, is generally considered to be the boundary. The average depth of the basin is about 4, meters 13, feet , although the Java Trench reaches a depth of over 7, meters 23, feet.
A decision by the International Hydrographic Organization in the spring of delimited a fifth world ocean, the Southern Ocean. The Southern Ocean is now the fourth largest of the world's five oceans. The Southern Ocean has the unique distinction of being a large circumpolar body of water totally encircling the continent of Antarctica.
The smallest of Earth's five ocean basins is the Arctic. The surface waters of the Arctic Ocean mingle with those of the Pacific Ocean through the Bering Strait, by way of a narrow and shallow channel, which has a depth of about 55 meters feet.
More importantly, the Arctic waters mix with those of the Atlantic Ocean across a system of submarine sills shallow ridges that reach from Scotland to Greenland and from Greenland to Baffin Island at depths of about to meters 1, to 2, feet. The total surface area of the Arctic Ocean—including its major subdivisions, the North Polar Sea the main portion , the Norwegian Sea, the North Sea, and the Barents Sea—is about 14 million square kilometers 5.
Approximately one-third of the Arctic Ocean is underlain by continental shelf, which includes a broad shelf north of Eurasia and the narrower shelves of North America and Greenland.
Seaward of the continental shelves lies the Arctic Basin proper, which is subdivided into a set of three parallel ridges and four basins also known as deeps. These features have been discovered and explored only since the late s.
The Lomonosov Ridge, the major ridge, cuts the North Polar Sea almost in half, extending as a submarine bridge 1, kilometers 1, miles from Siberia to the northwestern tip of Greenland. Parallel to it are two shorter ridges: the Alpha Ridge on the North American side, defining the Canada and Makarov basins, and the mid-ocean ridge on the Eurasian side, defining the Nansen and Fram basins.
The average depth of the Arctic Ocean is only about 1, meters 4, feet because of the vast shallow expanses on the continental shelves. The deepest point in the Arctic Ocean is 5, meters 17, feet. Unlike the other oceans, the Arctic Ocean is ice-covered. At lower latitudes, the ice melts during the summer months. At polar latitudes, however, the ice cover is permanent.
Another distinctive feature of the Arctic Ocean is the presence of islands composed of ice. These ice islands move, as does much of the ice cover, in the currents that exist in the underlying ocean water. Scientists have used the islands as research bases to study the arctic ice movements and other aspects of the far North.
Lee Lerner. Lebow, Ruth, and Tom S. Oceanus: the Marine Environment. Belmont, CA: Wadsworth Publishing, Earth's Oceans: An Introduction. Physiography of the Ocean Basins. Okanagan University College. The World Factbook Central Intelligence Agency.
Toggle navigation. Atlantic Ocean Basin The Atlantic Ocean is the second largest of Earth's five oceans, the most heavily traveled, and the most intensely studied, principally because of its importance in ship traffic between Europe and North America. Southern Ocean A decision by the International Hydrographic Organization in the spring of delimited a fifth world ocean, the Southern Ocean.
Brian D. Hoyle and K. Bibliography Lebow, Ruth, and Tom S. User Contributions:. Comment about this article, ask questions, or add new information about this topic: Name:. E-mail: Show my email publicly. Human Verification:. Public Comment: characters. Send comment. Nutrients in Lakes and Streams Ocean Biogeochemistry.
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