Gulf Of Bothnia
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The Gulf of Bothnia (; fi, Pohjanlahti; sv, Bottniska viken) is divided into the
Bothnian Bay The Bothnian Bay or Bay of Bothnia (; ) is the northernmost part of the Gulf of Bothnia, which is in turn the northern part of the Baltic Sea. The land holding the bay is still rising after the weight of ice-age glaciers has been removed, and wit ...
and
Bothnian Sea The Bothnian Sea ( sv, Bottenhavet; fi, Selkämeri) links the Bothnian Bay (also called the Bay of Bothnia) with the Baltic proper. Kvarken is situated between the two. Together, the Bothnian Sea and Bay make up a larger geographical entity, t ...
, and it is the northernmost
arm In human anatomy, the arm refers to the upper limb in common usage, although academically the term specifically means the upper arm between the glenohumeral joint (shoulder joint) and the elbow joint. The distal part of the upper limb between th ...
of the
Baltic Sea The Baltic Sea is an arm of the Atlantic Ocean that is enclosed by Denmark, Estonia, Finland, Germany, Latvia, Lithuania, Poland, Russia, Sweden and the North and Central European Plain. The sea stretches from 53°N to 66°N latitude and from ...
, between
Finland Finland ( fi, Suomi ; sv, Finland ), officially the Republic of Finland (; ), is a Nordic country in Northern Europe. It shares land borders with Sweden to the northwest, Norway to the north, and Russia to the east, with the Gulf of B ...
's west coast ( East Bothnia) and the
Sweden Sweden, formally the Kingdom of Sweden,The United Nations Group of Experts on Geographical Names states that the country's formal name is the Kingdom of SwedenUNGEGN World Geographical Names, Sweden./ref> is a Nordic country located on ...
's east coast (
West Bothnia West or Occident is one of the four cardinal directions or points of the compass. It is the opposite direction from east and is the direction in which the Sun sets on the Earth. Etymology The word "west" is a Germanic word passed into some ...
and
North Bothnia Norrbotten (), known in English as North Bothnia, is a Swedish province (''landskap'') in northernmost Sweden. It borders south to Västerbotten, west to Swedish Lapland, and east to Finland. Administration The traditional provinces of Swed ...
). In the south of the gulf lies
Åland Åland ( fi, Ahvenanmaa: ; ; ) is an Federacy, autonomous and Demilitarized zone, demilitarised region of Finland since 1920 by a decision of the League of Nations. It is the smallest region of Finland by area and population, with a size of 1 ...
, between the
Sea of Åland The Åland Sea (or the Sea of Åland; sv, Ålands hav, fi, Ahvenanmeri) is a waterway in the southern Gulf of Bothnia, between Åland and Sweden. It connects the Bothnian Sea with the Baltic Sea proper. The western part of the basin is in Swed ...
and the Archipelago Sea.


Name

Bothnia is a latinization. The Swedish name was originally just , with being
Old Norse Old Norse, Old Nordic, or Old Scandinavian, is a stage of development of North Germanic languages, North Germanic dialects before their final divergence into separate Nordic languages. Old Norse was spoken by inhabitants of Scandinavia and t ...
for "gulf" or "bay", which is also the meaning of the second element . The name was applied to the Gulf of Bothnia as in Old Norse, after , which at the time referred to the coastland west of the gulf. Later, was applied to the regions on the western side and the eastern side ('East Bottom' and 'West Bottom'). The Finnish name of Österbotten, (, meaning 'land'), gives a hint as to the meaning in both languages: the meaning of includes both 'bottom' and 'north'. is the base word for north, , with an adjectival suffix added. / is
cognate In historical linguistics, cognates or lexical cognates are sets of words in different languages that have been inherited in direct descent from an etymology, etymological ancestor in a proto-language, common parent language. Because language c ...
with the
English English usually refers to: * English language * English people English may also refer to: Peoples, culture, and language * ''English'', an adjective for something of, from, or related to England ** English national ide ...
word ''bottom'', and it might be part of a general north European distinction of lowlands, as opposed to highlands, such as the Netherlandic region,
Samogitia Samogitia or Žemaitija ( Samogitian: ''Žemaitėjė''; see below for alternative and historical names) is one of the five cultural regions of Lithuania and formerly one of the two core administrative divisions of the Grand Duchy of Lithuania ...
(
Lithuania Lithuania (; lt, Lietuva ), officially the Republic of Lithuania ( lt, Lietuvos Respublika, links=no ), is a country in the Baltic region of Europe. It is one of three Baltic states and lies on the eastern shore of the Baltic Sea. Lithuania ...
n), and
Sambia Sambia (russian: Самбийский полуостров, lit=Sambian Peninsula, translit=Sambiysky poluostrov) or Samland (russian: Земландский полуостров, lit=Zemlandic Peninsula, translit=Zemlandsky poluostrov) or Kalini ...
(
Russia Russia (, , ), or the Russian Federation, is a List of transcontinental countries, transcontinental country spanning Eastern Europe and North Asia, Northern Asia. It is the List of countries and dependencies by area, largest country in the ...
). A second possibility is that follows an alternative Scandinavian connotation of 'furthermost'. Thus, the Gulf of Bothnia would be the farthest extent of the Ocean. Julius Pokorny gives the extended
Proto-Indo-European Proto-Indo-European (PIE) is the reconstructed common ancestor of the Indo-European language family. Its proposed features have been derived by linguistic reconstruction from documented Indo-European languages. No direct record of Proto-Indo-E ...
root as with a variant, from which the Latin , as in ''fundament'', is derived. The original meaning of English ''north'', from Proto-Indo-European 'under', indicates an original sense of 'lowlands' for ''bottomlands''. On the other hand, by ''north'' the classical authors usually meant 'outermost', as the northern lands were outermost to them. In Saami, the cardinal directions were named according to the different parts of the typical tent used by this nomadic people. The door of the tent was traditionally pointed south, in the most sunny direction, and the bottom of the tent would be aligned with the north. Thus the origin of the word in its use as 'north'. According to Lönnrot, north was viewed as the bottom direction because the lowest point of the sun's path is there.


Geography

The
International Hydrographic Organization The International Hydrographic Organization (IHO) is an intergovernmental organisation representing hydrography. , the IHO comprised 98 Member States. A principal aim of the IHO is to ensure that the world's seas, oceans and navigable waters a ...
defines the southern limit of the Gulf of Bothnia as follows:
From Simpnäsklubb (59°54'N) in Sweden, to Flötjan, Lagskær ic Fæstörne ic
Kökar Kökar () is an island municipality to the south-east of the Åland archipelago, Finland. It is also one of the municipalities of Åland. It is reachable by boat from Långnäs on Åland or from Galtby with access to mainland Finland. The munic ...
sörn, and Vænö-Kalkskær icto the SW point of Hangöudde ( Hangö Head, 59°49'N) in Finland, thus including
Åland Åland ( fi, Ahvenanmaa: ; ; ) is an Federacy, autonomous and Demilitarized zone, demilitarised region of Finland since 1920 by a decision of the League of Nations. It is the smallest region of Finland by area and population, with a size of 1 ...
and adjacent shoals and channels in the Gulf of Bothnia.
The gulf is 725 km (450 mi) long, 80–240 km (50-150 mi) wide and has an average depth of 60 m (200 ft, 33 fathoms). The maximum depth is 295 m (965 ft, 161 fathoms). The surface area is 117,000 km² (45,200 sq mi). The northernmost point is situated in
Töre Töre (Kalix Language: ''te'or'') is a locality situated in Kalix Municipality, Norrbotten County, Sweden with 1,099 inhabitants as of 2010. Its harbour is the northernmost of the Bothnian Bay (and thus, of the Baltic Sea) that is accessible to ...
in the
Bothnian Bay The Bothnian Bay or Bay of Bothnia (; ) is the northernmost part of the Gulf of Bothnia, which is in turn the northern part of the Baltic Sea. The land holding the bay is still rising after the weight of ice-age glaciers has been removed, and wit ...
. its coordinates are 65° 54'07" N 22° 39'00 E. The depth and surface area of the Gulf of Bothnia are constantly decreasing, as the land is rising after it had been pressed down by about 2,600 to 3,300 feet (800 to 1,000 meters)Geologica: Earth’s Dynamic Forces by Dr Robert R. Coenraads and John I. Koivula by the continental ice during last ice age. The rise is 80 cm every hundred years. It is estimated that the land has a further 300 to 400 feet (100 to 125 meters) to rise before equilibrium is reached. This recovery rate will progressively slow as isostatic equilibrium is approached. Into the gulf flow a number of rivers from both sides; consequently, a
salinity Salinity () is the saltiness or amount of salt dissolved in a body of water, called saline water (see also soil salinity). It is usually measured in g/L or g/kg (grams of salt per liter/kilogram of water; the latter is dimensionless and equal ...
gradient exists from north to south. In the south the water is the normal
brackish water Brackish water, sometimes termed brack water, is water occurring in a natural environment that has more salinity than freshwater, but not as much as seawater. It may result from mixing seawater (salt water) and fresh water together, as in estua ...
of the
Baltic Sea The Baltic Sea is an arm of the Atlantic Ocean that is enclosed by Denmark, Estonia, Finland, Germany, Latvia, Lithuania, Poland, Russia, Sweden and the North and Central European Plain. The sea stretches from 53°N to 66°N latitude and from ...
, but in the north, in the
Bothnian Bay The Bothnian Bay or Bay of Bothnia (; ) is the northernmost part of the Gulf of Bothnia, which is in turn the northern part of the Baltic Sea. The land holding the bay is still rising after the weight of ice-age glaciers has been removed, and wit ...
, the salinity is so low, from 0.4% near
Kvarken Kvarken ( sv, Kvarken, Norra Kvarken (as opposed to South Kvarken); ) is the narrow region of the Gulf of Bothnia separating the Bothnian Bay (the inner part of the gulf) from the Bothnian Sea. The distance from the Swedish mainland to the Finn ...
to 0.2% in the northernmost part, that many freshwater fish such as the pike, whitefish and perch thrive in it. The gulf is a combination of the
Bothnian Bay The Bothnian Bay or Bay of Bothnia (; ) is the northernmost part of the Gulf of Bothnia, which is in turn the northern part of the Baltic Sea. The land holding the bay is still rising after the weight of ice-age glaciers has been removed, and wit ...
in the north and the
Bothnian Sea The Bothnian Sea ( sv, Bottenhavet; fi, Selkämeri) links the Bothnian Bay (also called the Bay of Bothnia) with the Baltic proper. Kvarken is situated between the two. Together, the Bothnian Sea and Bay make up a larger geographical entity, t ...
in the south, separated by the
Kvarken Kvarken ( sv, Kvarken, Norra Kvarken (as opposed to South Kvarken); ) is the narrow region of the Gulf of Bothnia separating the Bothnian Bay (the inner part of the gulf) from the Bothnian Sea. The distance from the Swedish mainland to the Finn ...
region with a water depth of around and a rate of land rising of almost a year. Within 2000 years the bay is expected to separate from the rest of the gulf and become a freshwater lake. Being nearly fresh, the gulf is frozen over five months every year. The icing of the
Baltic Sea The Baltic Sea is an arm of the Atlantic Ocean that is enclosed by Denmark, Estonia, Finland, Germany, Latvia, Lithuania, Poland, Russia, Sweden and the North and Central European Plain. The sea stretches from 53°N to 66°N latitude and from ...
begins and ends in the northern Gulf of Bothnia. Traffic restrictions for
icebreaker An icebreaker is a special-purpose ship or boat designed to move and navigate through ice-covered waters, and provide safe waterways for other boats and ships. Although the term usually refers to ice-breaking ships, it may also refer to smaller ...
assistance are typically in force for all the gulf from late January to late April and for the northernmost ports from the middle of December to the middle of May.


Geology

Geologically the Gulf of Bothnia is an ancient depression of
tectonic Tectonics (; ) are the processes that control the structure and properties of the Earth's crust and its evolution through time. These include the processes of mountain building, the growth and behavior of the strong, old cores of continents ...
origin. The depression is partly filled with sedimentary rock deposited in the Precambrian and
Paleozoic The Paleozoic (or Palaeozoic) Era is the earliest of three geologic eras of the Phanerozoic Eon. The name ''Paleozoic'' ( ;) was coined by the British geologist Adam Sedgwick in 1838 by combining the Greek words ''palaiós'' (, "old") and ' ...
. Nearby plains adjoining the gulf are part of the Sub-Cambrian peneplain. While being repeatedly covered by glaciers during the last 2.5 million years glacial erosion has had a limited effect in changing the topography. Ongoing
post-glacial rebound Post-glacial rebound (also called isostatic rebound or crustal rebound) is the rise of land masses after the removal of the huge weight of ice sheets during the last glacial period, which had caused isostatic depression. Post-glacial rebound ...
is thought to result in splitting of the Gulf of Bothnia into a southern gulf and northern lake across the Norra Kvarken area in not less time than about 2,000 years.


History

Some historians suggest that the adventurer Ottar was referring to the Gulf of Bothnia when he spoke of the '' Kven Sea'' in the 9th century. It is also possible that
Claudius Clavus Claudius Clavus (Suartho) also known as ''Nicholas Niger'', ( da, Claudius Claussøn Swart), (born 14 September 1388), was a Danish geographer sometimes considered to be the first Nordic cartographer. It is believed that he was born in the vi ...
's usage of the term in the 15th century refers to the Gulf of Bothnia.


Economy

The land surrounding the Gulf of Bothnia is heavily forested. Trees are logged, then transported to the coast for milling. The gulf is also important for oil transport to the coastal cities and ore transport to steel mills, for instance in Raahe. In terms of tonnage in international traffic, the largest ports on the Finnish side are Rauma, Kokkola and Tornio. The main ports of the Swedish side are in Luleå, Skellefteå, Umeå, Sundsvall, Gävle and Hargshamn. In Luleå, iron ore pellets are exported and coal is imported. Gävle is Sweden's third-largest container port. It also ships forest products and oil. In port operations in the Gulf of Bothnia, icebreaker assistance can be required for an ice season that averages as long as six months; whereas in the Gulf of Finland, the icebreaking season averages only three months. There is some fishery, mainly
Baltic herring Atlantic herring (''Clupea harengus'') is a herring in the family Clupeidae. It is one of the most abundant fish species in the world. Atlantic herrings can be found on both sides of the Atlantic Ocean, congregating in large schools. They can ...
, for domestic needs. A persistent problem has been pollution, because the sea is enclosed by a large drainage basin and is poorly connected to fresher waters from the Atlantic. Mercury and PCB levels have been relatively high, although the Finnish Food Safety Authority considers the herring edible. Although the levels exceed the limits, the fatty acids have health benefits that offset this risk.


Rivers

*
Kalajoki Kalajoki (; literally translated the "fish river") is a coastal town and municipality of Finland. It is located in the immediate vicinity of the Gulf of Bothnia in the province of Oulu and is part of the Northern Ostrobothnia region. The town has ...
*
Kemijoki Kemijoki ( sv, Kemi älv, se, Giemajohka), with its length, is the longest river in Finland. It runs through Kemijärvi and Rovaniemi before reaching the Gulf of Bothnia at Kemi. Facta 2001, part 8, ''finnish'' At Rovaniemi the Ounasjoki r ...
*
Kiiminkijoki Kiiminkijoki ( sv, Kiminge älv) is a river of Finland in the region of Northern Ostrobothnia. It flows for into the Gulf of Bothnia. Among the most impressive rapids on the river are Kalliuskoski in Puolanka, Kurimonkoski in Utajärvi, and Koite ...
*
Kokemäenjoki The Kokemäenjoki ("Kokemäki River", sv, Kumo älv) is a river in southwestern Finland. Geography The river originates at Lake Liekovesi in the Pirkanmaa region, and flows to the Gulf of Bothnia at Pori in the Satakunta region. Primary tribu ...
*
Oulujoki Oulujoki is a river in Oulu province, Finland. Its name in Finnish means literally "Oulu River" ( sv, Ule älv), originally in old Northern Ostrobothnian dialect literally "Flood River". Its origin is Oulujärvi and its watershed area covers ...
*
Dalälven The Dal River ( sv, Dalälven, Elfdalian: ''Dalövę'') is a river in central Sweden that flows from the north of Dalarna and runs into the sea in northern Uppland; it is commonly considered to be the southern border of Norrland, however only th ...
*
Ljusnan Ljusnan (from Old Norse: ''Lusn'' — light) is a river in Sweden, which is 440 kilometers long. The river starts in northwestern Härjedalen and then continues throughout the province into Hälsingland all the way to the Bothnian Sea. The bigg ...
* Ljungan *
Indalsälven Indalsälven is one of Sweden's longest rivers with a total length of 430 kilometers. Among its tributaries are Kallströmmen, Långan, Hårkan and Ammerån. A total of 26 hydropower plants are placed along its course, making it the third mo ...
*
Ångerman __NOTOC__ The Ångerman or Angerman ( sv, Ångermanälven) is one of Sweden's longest rivers with a total length of . It also has the third largest flow rate, after the Göta and Lule. Name The name was formerly written Ångermann or Angermann. ...
*
Ume River The Ume River (Swedish: ''Ume älv'' or ''Umeälven'') is one of the main rivers in northern Sweden. It is around long, and flows in a south-eastern direction from its source, the lake ''Överuman'' by the Norwegian border within the Scandinavian ...
*
Skellefte River The Skellefte River ( sv, Skellefteälven or ; sje, Seldutiedno; sju, Syöldateiednuo) is a river in northern Sweden; one of the major Norrland rivers. Geographically, it starts in the Norrbotten County, also known as the Swedish Lappland pro ...
*
Pite River The Pite River (''Bidumedno'' in Pite Sami. ''Piteälven'', ''Pite älv'' or ''Piteå älv'' in Swedish.) is a river in northern Sweden, flowing through the Norrbotten County. It is one of the four major rivers in Norrland that have been left mo ...
*
Lule River Lule River ( smj, Julevädno, sv, Lule älv, ''Luleälven'') is a major river in Sweden, rising in northern Sweden and flowing southeast for before reaching the Gulf of Bothnia at Luleå. It is the second longest river by watershed area or length ...
* Kalix River *
Torne The Torne, also known as the Tornio ( fi, Tornionjoki, sv, Torne älv, , se, Duortneseatnu, fit, Tornionväylä), is a river in northern Sweden and Finland. For approximately half of its length, it defines the border between these two countr ...


Cities and towns

* Gävle *
Härnösand Härnösand () is a locality and the seat of Härnösand Municipality in Västernorrland County, Sweden with 17,556 inhabitants in 2010. It is called "the gate to the High Coast" because of the world heritage landscape just a few miles north of H ...
*
Jakobstad Jakobstad (; fi, Pietarsaari) is a town and municipality in Ostrobothnia, Finland. The town has a population of () and covers a land area of . The population density is . Neighboring municipalities are Larsmo, Pedersöre, and Nykarleby. The ...
*
Kalajoki Kalajoki (; literally translated the "fish river") is a coastal town and municipality of Finland. It is located in the immediate vicinity of the Gulf of Bothnia in the province of Oulu and is part of the Northern Ostrobothnia region. The town has ...
*
Kokkola Kokkola (; sv, Karleby, ) is a cities of Finland, town and municipalities of Finland, municipality of Finland. The town is located in the Central Ostrobothnia regions of Finland, region. The town has a population of () and covers an area of of ...
*
Kristinestad Kristinestad (, Sweden ; fi, Kristiinankaupunki ; la, Christinea) is a town and a municipality in Finland. It is located in the western part of Finland on the shore of the Bothnian Sea. The population of Kristinestad is () and the municipality ...
*
Luleå Luleå ( , , locally ; smj, Luleju; fi, Luulaja) is a city on the coast of northern Sweden, and the capital of Norrbotten County, the northernmost county in Sweden. Luleå has 48,728 inhabitants in its urban core (2018) and is the seat of Lu ...
*
Oulu Oulu ( , ; sv, Uleåborg ) is a city, municipality and a seaside resort of about 210,000 inhabitants in the region of North Ostrobothnia, Finland. It is the most populous city in northern Finland and the fifth most populous in the country after: ...
* Pori * Rauma * Sundsvall *
Umeå Umeå ( , , , locally ; South Westrobothnian: ;). fi, Uumaja; sju, Ubmeje; sma, Upmeje; se, Ubmi) is a city in northeast Sweden. It is the seat of Umeå Municipality and the capital of Västerbotten County. Situated on the Ume River, U ...
*
Vaasa Vaasa (; sv, Vasa, , Sweden ), in the years 1855–1917 as Nikolainkaupunki ( sv, Nikolajstad; literally meaning "city of Nicholas),


References


External links

{{DEFAULTSORT:Gulf Of Bothnia Baltic Sea
Bothnia The Gulf of Bothnia (; fi, Pohjanlahti; sv, Bottniska viken) is divided into the Bothnian Bay and Bothnian Sea, and it is the northernmost arm of the Baltic Sea, between Finland's west coast ( East Bothnia) and the Sweden's east coast ( Wes ...
Bays of Finland Gulfs of Sweden Geography of Northern Europe Geography of Scandinavia Finland–Sweden border Landforms of Norrbotten County Landforms of Västerbotten County Landforms of Västernorrland County Landforms of Gävleborg County Mesoproterozoic rifts and grabens