- Hudson Bay
Hudson Bay (French: "baie d'Hudson") is a large (1.23 million km²), relatively shallow body of water in northeastern
Canada. It drains a very large area that includes parts of Ontario, Quebec, Saskatchewan, Alberta, most of Manitoba, parts of North Dakota, South Dakotaand Minnesota, and the southeastern area of Nunavut. A smaller offshoot of the bay, James Bay, lies to the south. The International Hydrographic Organizationlists Hudson Bay as part of the Arctic Ocean. [ISO Special Publication 23, "Limits of Oceans and Seas", fourth edition] On the east it is connected with the Atlantic Oceanby Hudson Strait, and on the north with the rest of the Arctic Ocean by Foxe Basin(which is not considered part of the bay) and Fury and Hecla Strait. Geographic coordinates: 78° to 95° W, 51° to 70° N.
The Eastern Cree name for Hudson and
James Bayis "Wînipekw" (Southern dialect) or "Wînipâkw" (Northern dialect), meaning muddy or brackish water. Lake Winnipegis similarly named by the local Cree, as is the location for the City of Winnipeg.
Hudson Bay was named after
Henry Hudson, who explored the bay in 1610 on his ship the "Discovery". On this fourth voyage he worked his way around the west coast of Greenlandand into the bay, mapping much of its eastern coast. The "Discovery" became trapped in the ice over the winter, and the crew survived onshore at the southern tip of James Bay. When the ice cleared in the spring Hudson wanted to explore the rest of the area, but the crew mutinied on June 22, 1611, and left Hudson and others adrift in a small boat. No one to this day knows the fate of Hudson and his loyal crew.
Sixty years later the "Nonsuch" reached the bay and successfully traded for beaver pelts with the
Cree. This led to the creation of the Hudson's Bay Company, which bears its name to this day. The British crown awarded a trading monopoly on the Hudson Bay watershed, called Rupert's Land, to the Hudson's Bay Company. France contested this grant by sending several military expeditions to the region, but abandoned its claim in the Treaty of Utrecht(April, 1713).
During this period, the Hudson's Bay Company built several forts and
trading posts along the coast at the mouth of the major rivers (such as Fort Severn, Ontario, York Factory, Manitoba, and Churchill, Manitoba). The strategic locations allowed inland exploration and more importantly, facilitated trade with the indigenous people, who would bring fur to the posts from where the HBC would transport it directly to Europe (which incidentally is a shorter distance than from Montreal). The HBC continued to use these posts until the beginning of the 20th century. The port of Churchill is still today an important shipping link for trade with Europe and Russia.
This land, an area of approximately 3.9 million km², was ceded in 1870 to
Canadaas part of the Northwest Territorieswhen the trade monopoly was abolished. Starting in 1913, the Bay was extensively charted by the Canadian Government's CSS Acadiato develop the bay for navigation. This resulted in the establishment of Churchill, Manitoba, as a deep-sea port for wheat exports in 1929 after unsuccessful attempts at Port Nelson.
Due to a change in naming conventions, Hudson's Bay is now correctly called Hudson Bay. As a result, both the body of water and the company are often misnamed.
Hudson Bay was the growth centre for the main ice sheet that covered northern North America during the last Ice Age. The whole region has very low year round average temperatures. (The average annual temperature for Churchill at 59°N is -5°C; by comparison
Arkhangelskat 64°N in a similar cold continental position in northern Russia has an average of 2°C. [GHCN climatic monthly data, GISS, using 1995-2007 annual averages] ) Water temperature peaks at 8°-9°C on the western side of the bay in late summer. It is largely frozen over from mid-December to mid-June when it usually clears from its eastern end westwards and southwards. A steady increase in regional temperatures over the last 100 years has been reflected in a lengthening of the ice-free period which was as short as four months in the late 17th century. [General Survey of World Climatology, Landsberg ed., (1984), Elsevier.]
Hudson Bay has a
salinitythat is lower than the world ocean on average. This is caused mainly by the low rate of evaporation (the bay is ice-covered for much of the year), the large volume of terrestrial runoff entering the bay (about 700 km³ annually; the Hudson Bay watershed covers much of Canada, with many rivers and streams discharging into the bay), and the limited connection with the larger Atlantic Ocean (and its higher salinity). The annual freeze-up and thaw of sea icesignificantly alters the salinity of the surface layer, representing roughly three years' worth of river inflow.
The western shores of the bay are a lowland known as the "Hudson Bay Lowlands" which covers 324,000 km². The area is drained by a large number of rivers and has formed a characteristic vegetation known as
muskeg. Much of the landform has been shaped by the actions of glaciers and the shrinkage of the bay over long periods of time. Signs of numerous former beachfronts can be seen far inland from the current shore. A large portion of the lowlands in the province of Ontariois part of the Polar Bear Provincial Park, and a similar portion of the lowlands in Manitobais contained in Wapusk National Park.
In contrast, most of the eastern shores (the Quebec portion) form the western edge of the
Canadian Shieldin Quebec. The area is rocky and hilly. Its vegetation is typically boreal forest, and to the north, tundra.
Measured by shoreline, Hudson Bay is the largest bay in the world (the largest in area being the
Bay of Bengal).
There are many islands in Hudson Bay, mostly near the eastern coast. All are part of the territory
Nunavut. One group of islands, with a reputable name, is the Belcher Islands. Another group includes the Ottawa Islands.
When Earth's gravitational field was mapped starting in the 1960s a large region of below-average gravity was detected in the Hudson Bay region. This was initially thought to be a result of the crust still being depressed from the weight of the
Laurentideice sheet during the most recent Ice Age, but more detailed observations taken by the GRACEsatellite suggest that this effect cannot account for the entirety of the gravitational anomaly. It is thought that convection in the underlying mantle may be contributing. [cite news| url=http://space.newscientist.com/article/dn11826-satellites-solve-mystery-of-low-gravity-over-canada.html| publisher=New Scientist| title= Satellites solve mystery of low gravity over Canada| date=10 May 2007| first=Kelly| last=Young| accessdate=2007-05-11]
The southeastern portion of the bay may be the remnant of a gigantic prehistoric impact structure with the Belcher Islands forming the central uplift area. Geologists still debate what created the semicircular feature of the bay--some say glaciers, others say an impact that predates the glaciers. The feature is known as the
Nastapoka Arcand has been compared to Mare Crisium on the Moon. (See references below for more geological discussion on this and other bay features.)
Supposedly there are large deposits of iron ore under the bay which affect magnetic fields and compasses.Fact|date=December 2007
The coast of Hudson Bay is extremely sparsely populated; there are only about a dozen villages. Some of these were founded in the 17th and 18th centuries by the Hudson's Bay Company as trading posts, making them part of the oldest settlements in Canada. With the closure of the HBC posts and stores in the second half of the 20th century, many coastal villages are now almost exclusively populated by
Some of the more prominent communities along the Hudson Bay coast are:
Rankin Inlet, Nunavut
Not until the
Cold Warwas there any military significance attributed to the region. In the 1950s, a few sites along the coast became part of the Mid-Canada Line, watching for a potential Soviet bomber attack over the North Pole. The only Arctic, deep water port in Canada is located at Churchill, Manitoba.
. [ [http://www.theglobeandmail.com/servlet/story/RTGAM.20071018.wChurchill18/BNStory/National/] The Globe and Mail, Toronto, 18 October 2007, Russian ship crosses 'Arctic bridge' to Manitoba]
Canada Hudson Bay drainage
Great Recycling and Northern Development Canal
Hudson's Bay Company Archives
*"Atlas of Canada", [http://atlas.nrcan.gc.ca/site/english/index.html online version] .
Some references of geological/impact structure interest include:
Rondot, Jehan (1994). Recognition of eroded astroblemes. Earth-Science Reviews 35, 4, p.331-365.
Wilson, J. Tuzo (1968) Comparison of the Hudson Bay arc with some other features. In: Science, History and Hudson Bay, v. 2. Beals, C. S. (editor), p.1015-1033.
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Hudson-Bay — Die Hudson Bay (franz.: Baie d Hudson; Inuktitut: Kangiqsualuk Ilua, deutsch auch: Hudsonbai oder Hudson Bucht) ist ein über 1,23 Millionen km² großes Binnenmeer im nordöstlichen Teil Kanadas. An der über die Hudson Straße mit dem Atlantik… … Deutsch Wikipedia
Hudson Bay — Die Hudson Bay (französisch Baie d’Hudson, Inuktitut Kangiqsualuk Ilua, deutsch auch Hudsonbai oder Hudson Bucht) ist ein über 1,23 Millionen km² großes Randmeer im nordöstlichen Teil Kanadas. An der über die Hudson Straße mit dem Atlantik … Deutsch Wikipedia
Hudson Bay — a large area of sea in northern Canada which is frozen for most of the year … Dictionary of contemporary English
Hudson Bay — [after HUDSON1 Henry] inland sea in NE Canada; arm of the Atlantic: c. 475,000 sq mi (1,230,245 sq km) … English World dictionary
Hudson Bay — a large inland sea in N Canada. 850 mi. (1370 km) long; 600 mi. (965 km) wide; 400,000 sq. mi. (1,036,000 sq. km). * * * Inland sea, indenting east central Canada. With an area of 480,000 sq mi (1,243,000 sq km), it is bounded by Nunavut,… … Universalium
Hudson Bay — Explored by Henry Hudson, 1610, and named after him. Explored by Sir Thomas Button, 1612; Jens Munk, 1619; Foxe and James. 1631. In 1668 the first trading ship of the Hudson s Bay Company entered the bay, and their first fort was built at the… … The makers of Canada
Hudson Bay — Pour les articles homonymes, voir Hudson Bay (homonymie). Hudson Bay Ajouter une image Administration Pays … Wikipédia en Français
Hudson Bay — Sp Hãdsono įlanka Ap Hudson Bay angliškai Ap Baie d Hudson prancūziškai L Arkties vand. dalis prie Kanados (Kvebeko, Manitobos, Nunavuto, Ontarijo p jos) … Pasaulio vietovardžiai. Internetinė duomenų bazė
Hudson Bay — Original name in latin Hudson Bay Name in other language YHB State code CA Continent/City America/Regina longitude 52.85003 latitude 102.38425 altitude 375 Population 1661 Date 2008 04 11 … Cities with a population over 1000 database
Hudson Bay — , Hudson Strait, Hudson River but Hudson’s Bay Company … Bryson’s dictionary for writers and editors