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arctic ocean ridges

Gakkel Ridge Wikipedia

The Gakkel Ridge (formerly known as the Nansen Cordillera and Arctic Mid-Ocean Ridge) is a mid-oceanic ridge, a divergent tectonic plate boundary between the North American Plate and the Eurasian Plate. It is located in the Eurasian Basin of the Arctic Ocean, between Greenland and Siberia, and has a length of about 1,800 kilometers. Geologically, it connects the northern end of the Mid-Atlantic Ridge with the Laptev Sea Rift.

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Arctic Ocean Seafloor Map: Depth, Shelves, Basins, Ridges

The Lomonosov Ridge traverses the Arctic Ocean from the Lincoln Shelf (off Ellesmere Island and Greenland) to the New Siberian Islands off the coast of northern Russia. It divides the Arctic Ocean into two major basins: the Eurasian Basin on the Eurasian side of the ridge and the Amerasian Basin on the North American side.

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Effects of sea‐ice ridges on sound propagation in the

An environmental/acoustic model of sound propagation in the Arctic Ocean, which accounts for reflection losses from ridged sea ice, has been developed. In this model sea‐ice ridges are represented as infinitely long, randomly distributed, elliptical half‐cylinders. Under‐ice reflection losses for acoustic wavelengths either large or small compared to ridge dimensions are computed from

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The Arctic Mid-Oceanic Ridge Nature

01/08/1967· Associated with the centre of the ridge over much of its length is an axial fracture or rift which is the locus of shallow earthquakes. An extension of this world encircling ridge into the...

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Arctic Ocean Definition, Location, Map, Climate, & Facts

The Arctic Ocean and its marginal seas—the Chukchi, East Siberian, Laptev, Kara, Barents, White, Greenland, and Beaufort and, according to some oceanographers, also the Bering and Norwegian seas—are the least-known basins and bodies of water in the world ocean as a result of their remoteness, hostile weather, and perennial or seasonal ice cover.

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Arctic Ocean Topography of the ocean floor Britannica

Arctic Ocean Arctic Ocean Topography of the ocean floor: 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. Explorations after 1950 revealed the true complex nature of the ocean floor.

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Effects of sea‐ice ridges on sound propagation in the

An environmental/acoustic model of sound propagation in the Arctic Ocean, which accounts for reflection losses from ridged sea ice, has been developed. In this model sea‐ice ridges are represented as infinitely long, randomly distributed, elliptical half‐cylinders. Under‐ice reflection losses for acoustic wavelengths either large or small compared to ridge dimensions are computed from

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arctic ocean ridges willysbedandbreakfast

Arctic Ocean Wikipedia. The Arctic Ocean is the smallest and shallowest of the world's five major oceans. The bathymetry of the ocean bottom is marked by fault block ridges, abyssal plains, ocean deeps, and basins. The average depth of the Arctic Ocean is 1,038 m (3,406 ft). The deepest point is Litke Deep in the Eurasian Basin, at 5,450 m

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Seismicity of the Arctic mid-ocean Ridge system

01/03/2015· The Arctic ridge system and the Southwest Indian Ridge (55°S 0°E to 25.5°S 70°E) are the main representatives of ultraslow spreading mid-ocean ridges but are both equally remotely located and difficult to access for seismicity studies. The coverage with seismic stations around the Southwest Indian Ridge is even poorer than in the Arctic where land masses are closer by. A comprehensive

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The nature of the acoustic basement on Mendeleev and

05/01/2012· V. Bruvoll, Y. Kristoffersen, B.J. Coakley, J. HopperHemipelagic deposits on the Mendeleev and Alpha sub-marine ridges in the Arctic Ocean: acoustic stratigraphy, depositional environment and inter-ridge correlation calibrated by the ACEX results. Marine Geophysical Research, 31 (2010), pp. 149-171, 10.1007/s11001-010-9094-9. Google Scholar. Cann and Von Herzen, 1983. J.R. Cann, R.P. Von

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Geophysical characteristics of the ultraslow spreading

At the beginning of geoscientific research in the Arctic ocean, even bathymetry was poorly known and the existence of an active mid‐ocean ridge in the central Arctic was quite speculatively based on sparse earthquakes lining up systematically in the middle of the Eurasia Basin. In the 1970s, aeromagnetic investigations were the only geophysical experiments that were not hindered by the pack

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Resource assessment of undiscovered seafloor massive

01/11/2018· Toward high-spatial resolution gravity surveying of the mid-ocean ridges with autonomous underwater vehicles: Oceans 2008 Marine Technology Society-Institute of Electrical and Electronics Engineers Conference, Quebec City, Canada, 15-18, September 2008, Proceedings, p. 10.

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Oceanic ridge geology Britannica

Oceanic ridges are found in every ocean basin and appear to girdle Earth. The ridges rise from depths near 5 km (3 miles) to an essentially uniform depth of about 2.6 km (1.6 miles) and are roughly symmetrical in cross section. They can be thousands of kilometres wide.

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Seismic transect across the Lomonosov and Mendeleev

1 Introduction [2] Two major tectonic events have influenced the geological evolution of the Arctic Ocean in the last 130 Myr. The first was the opening in the Mesozoic of the Amerasia Basin consisting of the Canada and Podvodnikov Basins/Makarov Basin (MB) and the Chukchi Plateau and the Alpha‐Mendeleev Ridge (AMR) complex (Figure 1).The Makarov Basin is most likely of Late Mesozoic

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Magmatic and amagmatic seafloor generation at the

Here we describe the initial findings of the international Arctic Mid-Ocean Ridge T. in Mantle Flow and Melt Generation at Mid-ocean Ridges AGU Monograph 71 (eds Phipps Morgan, J ., Blackman

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