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・ Baltic Pride
・ Baltic Project
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・ Baltic psaltery
・ Baltic Quay
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・ Baltic Review
・ Baltic Robinson
・ Baltic Robinson 2001
・ Baltic Robinson 2002
・ Baltic Robinson 2004
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Baltic Sea
・ Baltic Sea Academy
・ Baltic Sea Action Group
・ Baltic Sea anomaly
・ Baltic Sea campaigns (1939–45)
・ Baltic Sea cruiseferries
・ Baltic Sea Division
・ Baltic Sea hypoxia
・ Baltic Sea Region Programme
・ Baltic Sea Steamship Company
・ Baltic Sea Trade Union Network
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・ Baltic Sea watchtower, Kühlungsborn
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Baltic Sea : ウィキペディア英語版
Baltic Sea


The Baltic Sea is a sea of the Atlantic Ocean, enclosed by Scandinavia, Finland, the Baltic countries, and the North European Plain. It includes the Gulf of Bothnia, the Bay of Bothnia, the Gulf of Finland and the Gulf of Riga. The sea stretches from 53°N to 66°N latitude and from 10°E to 30°E longitude. A mediterranean sea of the Atlantic, with limited water exchange between the two bodies, the Baltic Sea drains through the Danish islands into the Kattegat by way of the straits of Øresund, the Great Belt, and the Little Belt.
The Baltic Proper is bordered on its northern edge, at the latitude 60°N, by the Åland islands and the Gulf of Bothnia, on its northeastern edge by the Gulf of Finland, on its eastern edge by the Gulf of Riga, and in the West by the South-Swedish part of the Scandinavian Peninsula.
The Baltic Sea is connected by artificial waterways to the White Sea via the White Sea Canal and to the German Bight of the North Sea via the Kiel Canal.
== Definitions ==

Administration:
The Helsinki Convention on the Protection of the Marine Environment of the Baltic Sea Area includes the Baltic Sea and the Kattegat, without calling Kattegat a part of the Baltic Sea, "For the purposes of this Convention the "Baltic Sea Area" shall be the Baltic Sea and the Entrance to the Baltic Sea, bounded by the parallel of the Skaw in the Skagerrak at 57°44.43'N."〔(Text of Helsinki Convention )〕
Traffic history:
Historically, the Kingdom of Denmark collected Sound Dues from ships at the border between the ocean and the land-locked Baltic Sea. They were collected in the Øresund at Kronborg castle near Helsingør, in the Great Belt at Nyborg. In the Little Belt, the site of intake was moved to Fredericia, after that stronghold had been built. The narrowest part of Little Belt is the "Middelfart Sund" near Middelfart.〔(Pierers Universal-Lexikon, (a German encyclopedia from 1857–1865, automatic transcription of little quality): Sundzoll (Sound Dues ) )〕
Oceanography:
Geographers widely agree that the preferred physical border of the Baltic is a line drawn through the southern Danish islands, Drogden-Sill and Langeland.〔(Leibniz-Institut für Ostseeforschung Warnemünde: "Gehört das Kattegatt noch zur Ostsee" (Is the Kattegat a part of the Baltic Sea?) )〕 The Drogden Sill is situated north of Køge Bugt and connects Dragør in the south of Copenhagen to Malmö; it is used by the Øresund Bridge, including the ''Drogden Tunnel''. By this definition, the Danish Straits are part of the entrance, but the Bay of Mecklenburg and the Bay of Kiel are parts of the Baltic Sea.
Hydrography and biology:
Drogden Sill (depth of ) sets a limit to Øresund and Darss Sill (depth of ), and a limit to the Belt Sea.〔(Swedish Chemicals Agency (KEMI): The BaltSens Project – The sensitivity of the Baltic Sea ecosystems to hazardous compounds )〕 The shallow sills are obstacles to the flow of heavy salt water from the Kattegat into the basins around Bornholm and Gotland.
The Kattegat and the southwestern Baltic Sea are well oxygenated and have a rich biology. The remainder of the Sea is brackish, poor in oxygen and in species. Thus, statistically, the more of the entrance that is included in its definition, the healthier the Baltic appears; conversely, the more narrowly it is defined, the more endangered its biology appears.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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