Mythbusting 'the place where two oceans meet' in the Gulf of Alaska - Anchorage Daily News
Photos dubbed the place where two oceans meet have been making the rounds on the Internet for years, but there's a lot of misinformation out. Similarly, the boundary dividing the Atlantic and Pacific oceans passes through . an even faster pace in the Pacific Ocean; in the Atlantic, however, the slower rate of The meeting of these two air currents generates prevailing westerly winds. For millions of years, fish species in the Pacific and Atlantic oceans as they may not be able to keep pace with changes in climate as easily.
Find the first time this video appeared online. To do this, click on "Tools" at the top of your Google search, then "Time" and then click on a "Custom range" date period. By using this tool, we can narrow down the results year by year — and if you go back toyou can see that there are only two results for that year, one of which is a YouTube video.
This clearer, better-quality video published online in July shows exactly the same scene. Entitled, "When the river meets the ocean," it indicates that it was taken on the Fraser River in British Columbia in Canada.
Maryan Pearson, who posted the video, says she took it when she was aboard a ferry between Duke Point and Vancouver. What explains the strange sight? This case is similar to a photo published in that claimed to show the exact spot where the Pacific and the Atlantic meet.
The photo was actually taken in by Ken Bruland, a researcher at the University of California, Santa Cruz, who was studying the phenomenon in the Gulf of Alaska.
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He explained why it happened in an article by the debunking website Snopes. Physiography Extent 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.
In this article, however, the Arctic Ocean is considered a separate entity. Perhaps a more appropriate method for determining this boundary is by following the division between the distinctive Arctic and Atlantic water masses: Relief of the ocean floor The outstanding feature of the Atlantic floor is the Mid-Atlantic Ridgean immense median mountain range extending throughout the length of the Atlantic, claiming the centre third of the ocean bed, and reaching roughly 1, miles 1, 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.
'Two oceans meet but don’t mix': What does this viral video really show?
East and west of the ridge, about 12, to 18, feet 3, to 5, 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 Ridgewhile 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.
Elements of the continental margin.
Mythbusting 'the place where two oceans meet' in the Gulf of Alaska
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, to 15, feet 2, to 4, metres at the foot of continents, reach more than miles km in width off northwestern Africa, AngolaArgentinaand the Eastern Seaboard of the United States. In other areas they are exceedingly narrow.
Millions of years of weatheringerosionand 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, to 50, feet 3, to 15, metres thick—that some of the largest potential reserves on Earth of petroleumnatural gasand coal are found.
The Lesser Antilles and the South Sandwich Islands form large unstable island arcswhere the greatest depths of the Atlantic are found in steep-sided, narrow gashes that drop to more than 25, feet 7, metres below sea level and more than 10, feet 3, metres below the floors of adjacent basins.
Depths greater than 13, feet 4, 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 Seawhich 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, feet 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.
Strait of Gibraltar: Where Atlantic Meets Mediterranean
Islands Among purely oceanic islands i. Volcanic islands of a different sort are those of the two great arcs: Geology Origin and development The origin and development of the Atlantic Ocean are now accounted for by the theories of continental drift and plate tectonicsaccording to which a vast protocontinent, Pangeabegan to break up about million years ago. The rifting caused the landmasses of the Western and Eastern hemispheres to separate, opening up the Atlantic Ocean basin.