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13 de nov. de 2023 · South Atlantic Ocean Map. Click to see large. Description: This map shows South Atlantic Ocean countries, cities, major ports, roads. You may download, print or use the above map for educational, personal and non-commercial purposes. Attribution is required.
- Atlantic Ocean
South Atlantic Ocean Map. 1593x1381px / 863 Kb Go to Map....
- Atlantic Ocean
NOAA created the world map above to show the boundaries of the five major oceans. They set the boundary between the North Atlantic and South Atlantic at the equator, the boundary between the North Pacific and South Pacific at the equator; and the northern boundary of the Southern Ocean at 60 degrees south latitude.
This map was created by a user. Learn how to create your own. South Atlantic Ocean.
South Atlantic Map. The South Atlantic is considered the part of the Atlantic Ocean that lies below the Equatorial Counter Current. It makes up the waters and seas south of the equator, from the coast of Brazil and the Gulf of Guinea to the Antarctic continent.
- Overview
- Extent
- Relief of the ocean floor
Covering approximately one-fifth of Earth’s surface, the area of the Atlantic Ocean without its dependent seas is approximately 31,568,000 square miles (81,760,000 square km) and with them is about 32,870,000 square miles (85,133,000 square km).
How deep is the Atlantic Ocean?
The Atlantic Ocean has an average depth (with its seas) of 11,962 feet (3,646 meters) and a maximum depth of 27,493 feet (8,380 meters) in the Puerto Rico Trench, north of the island of Puerto Rico.
What is a major feature of the seafloor of the Atlantic Ocean?
The outstanding feature of the floor of the Atlantic Ocean is the Mid-Atlantic Ridge, an immense median mountain range extending throughout the length of the Atlantic, claiming the center third of the ocean bed and reaching roughly 1,000 miles (1,600 km) in breadth. In some places the Mid-Atlantic Ridge reaches above sea level to form islands.
What is the salinity of the Atlantic Ocean?
Various boundaries have been used to define particularly the northern but also the southern limits of the Atlantic Ocean. There are no universally accepted boundary conventions. In the north the situation is further complicated by the fact that the Arctic Ocean frequently is considered to be a dependent sea of the Atlantic. This is because the Arctic basin—which stretches from the Bering Strait across the North Pole to Spitsbergen and Greenland—resembles a semienclosed basin (i.e., it is nearly surrounded by land, receives proportionately large volumes of river discharge and sediments, has an extensive continental margin, and is relatively shallow). In this article, however, the Arctic Ocean is considered a separate entity.
Attempts to define the open-water boundary between the Atlantic and Arctic oceans often rely on arbitrary latitude coordinates or linear transects; the two most common latitudinal boundaries are 65° N and the Arctic Circle (66°30′ N). A less arbitrary method involves drawing a line eastward from Greenland to Iceland along the shallow Greenland-Iceland Rise and from Iceland to the Faroe Islands along the Faroe-Iceland Rise and then northward from the Faroes along the relatively shallow bottom features of the Voring Plateau to the west coast of Norway at a point near 70° N. Perhaps a more appropriate method for determining this boundary is by following the division between the distinctive Arctic and Atlantic water masses: the relatively warm and saline waters of the Norwegian Sea are assigned to the Atlantic, and the cold, lower-salinity waters of the Greenland Sea to the Arctic.
The outstanding feature of the Atlantic floor is the Mid-Atlantic Ridge, an immense median mountain range extending throughout the length of the Atlantic, claiming the centre third of the ocean bed, and reaching roughly 1,000 miles (1,600 km) in breadth. This feature, though of tremendous proportions, is but the Atlantic portion of the world-encircling oceanic ridge.
In some places the Mid-Atlantic Ridge reaches above sea level to form islands. Iceland, which rises from its crest, is rent by an extension of the median rift valley. East and west of the ridge, about 12,000 to 18,000 feet (3,700 to 5,500 metres) below sea level, lie basins that seem to present a relatively even profile, but parts of the basin floor are as mountainous as the Mid-Atlantic Ridge, while other parts are extremely smooth. The former are rocky abyssal hills; the latter are the abyssal plains that form the upper surface of great ponds of mud that fill many of the broad depressions. Large ancient volcanoes are found singly or in rows in the basins; these rise to form seamounts and, occasionally, islands.
As the continents are approached and the rugged Mid-Atlantic Ridge is left behind, an abyssal plain first is encountered, followed by the smooth, undulating surface of the continental rise. These broad embankments, which lie at depths of some 8,000 to 15,000 feet (2,400 to 4,500 metres) at the foot of continents, reach more than 300 miles (500 km) in width off northwestern Africa, Angola, Argentina, and the Eastern Seaboard of the United States. In other areas they are exceedingly narrow. Millions of years of weathering, erosion, and riverine sediment deposition have contributed to creating the sloping continental rises that are characteristic of the Atlantic basin. It is beneath these slopes—in accumulations 10,000 to 50,000 feet (3,000 to 15,000 metres) thick—that some of the largest potential reserves on Earth of petroleum, natural gas, and coal are found.
The Lesser Antilles and the South Sandwich Islands form large unstable island arcs, where the greatest depths of the Atlantic are found in steep-sided, narrow gashes that drop to more than 25,000 feet (7,600 metres) below sea level and more than 10,000 feet (3,000 metres) below the floors of adjacent basins. Depths greater than 13,000 feet (4,000 metres) occur in the Caribbean basin, which has numerous shallow and several deep connections with the open ocean, and in a few parts of the Mediterranean Sea, which communicates with the Atlantic only through the Strait of Gibraltar. The strait is about 8 miles (13 km) wide at its narrowest point, and the maximum depth on its sill (submarine ridge between basins) is only a little more than 1,000 feet (300 metres). The partial isolation of the large seas adjacent to the Mediterranean has a profound effect on the conditions in the seas themselves as well as in the open ocean.
25 de mar. de 2021 · Map showing the Atlantic Ocean basin location. The Atlantic Ocean covers about 41.1 million square miles or 20% of the Earth's total area. The North Atlantic Ocean spans 16.02 million square miles, while the South Atlantic Ocean covers about 15.55 million square miles.
