From the late 19th century when the norwegian explorer fridtjof nansen first discovered an ocean in the central arctic until the middle of the 20th century it was believed that the arctic ocean was a single large basin.
Atlantic ocean floor features.
Among the new features they re now able to detect sandwell says are thousands of previously unknown seamounts between 1000 and 2000 meters tall dotting the ocean floor.
The northwest passage is a sea route that connects the pacific ocean to the atlantic ocean across the northern.
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.
Arctic ocean arctic ocean topography of the ocean floor.
18 1 the topography of the sea floor we examined the topography of the sea floor from the perspective of plate tectonics in chapter 10 but here we are going to take another look at the important features from an oceanographic perspective.
This graphic shows several ocean floor features on a scale from 0 35 000 feet below sea level.
It covers approximately 20 percent of earth s surface and about 29 percent of its water surface area.
The following features are shown at example depths to scale though each feature has a considerable range at which it may occur.
The atlantic ocean is the second largest of the world s oceans with an area of about 106 460 000 km 2 41 100 000 sq mi.
The floor of the atlantic has an average depth of c 12 000 ft 3 660 m.
Part of the floor c 3 000 ft 910 m deep is known as telegraph plateau because of the network of cables laid there.
Each country receives exclusive economic rights to any natural resource that is present on or beneath the sea floor out to a distance of 200 nautical miles beyond their natural shorelines.
Arctic ocean seafloor features map.
It separates the old world from the new world the atlantic ocean occupies an elongated s shaped basin extending longitudinally between europe and africa to the east.
It is separated from that of the arctic ocean by a submarine ridge extending from se greenland to n scotland.
Explorations after 1950 revealed the true complex nature of the ocean floor.