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Coordinates: 32°57′00″N 129°52′30″E / 32.95°N 129.875°E / 32.95; 129.875
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{{Short description|Bay in Nagasaki, Japan}}
{{Infobox_bay
{{Infobox body of water
|bay_name = Ōmura Bay</br>(大村湾)
|name = Ōmura Bay
|image_bay = Nishisonogi&NagasakiPeninJpLandsat.jpg
|native_name ={{native name|ja|大村湾}}
⚫
|caption_bay = [[Landsat]] image of the Ōmura Bay
|image = Nishisonogi and Nagasaki Peninsula Japan SRTM.jpg
|map_bay =
⚫
|caption = [[Landsat]] image of the Ōmura Bay
⚫
|image_bathymetry =
|image_map =
⚫
|caption_bathymetry =
⚫
|image_bathymetry =
⚫
|caption_bathymetry =
|location = [[Nagasaki Prefecture]]
|location = [[Nagasaki Prefecture]]
|coords = {{coords|32.95|N|129.875|E|display=inline,title}}
|coords = {{coord|32.95|N|129.875|E|display=inline,title}}
|rivers =
|rivers =
|pushpin_map=Japan Nagasaki Prefecture
|oceans = [[East China Sea]]
|oceans = [[East China Sea]]
|countries = Japan
|countries = Japan
Line 14: Line 17:
|width = {{convert|11|km|mi|abbr=on}}
|width = {{convert|11|km|mi|abbr=on}}
|area = {{convert|320|km2|mi2|abbr=on}}
|area = {{convert|320|km2|mi2|abbr=on}}
|depth = {{convert|14.8|m|ft|abbr=on}}
|depth = {{convert|15|m|ft|abbr=on}}
|max-depth = {{convert|54|m|ft|abbr=on}}
|max-depth = {{convert|55|m|ft|abbr=on}}
|volume =
|volume =
|shore = {{convert|360|km|mi|abbr=on}}
|shore = {{convert|360|km|mi|abbr=on}}
|salinity =
|salinity =
|frozen =
|frozen =
|islands =
|islands =
|cities = [[Nagasaki]]
|cities = [[Nagasaki]]
|reference =
|reference =
}}
}}


{{nihongo|'''Ōmura Bay'''|大村湾|Ōmura-wan}} is a bay of the [[East China Sea]] in the centre of the [[Japan]]ese [[Nagasaki Prefecture]].
{{nihongo|'''Ōmura Bay'''|大村湾|Ōmura-wan}} is a bay located in the center of [[Nagasaki Prefecture]], [[Japan]] in the [[East China Sea]].


== Geography ==
== Geography ==
[[File:Ohmura bay nagasaki japan 2009.jpg|right|thumb|300px|Vista on Ōmura Bay.]]
The bay measures about {{convert|26|km|mi|abbr=on}} north-to-south and {{convert|11|km|mi|abbr=on}} east-to-west. The length of the shoreline is about {{convert|360|km|mi|abbr=on}} and the surface area is about {{convert|320|km2|mi2|abbr=on}}. This corresponds with about 8% of the total area of the prefecture. Compared to its size, the bay is relatively shallow with an average depth of {{convert|14.8|m|ft|abbr=on}} and maximum {{convert|54|m|ft|abbr=on}} depth.<ref name="kankyo">{{cite web|url=http://www.pref.nagasaki.jp/kankyo/oomura/sub4.html|title={{lang|ja|大村湾の特徴と現状}}|publisher=Nagasaki Prefecture |language=Japanese | accessdate=2011-10-30}}</ref>
The bay measures about {{convert|26|km|mi|abbr=on}} north-to-south and {{convert|11|km|mi|abbr=on}} east-to-west. The length of the shoreline is about {{convert|360|km|mi|abbr=on}} and the surface area is about {{convert|320|km2|mi2|abbr=on}}. This corresponds with about 8% of the total area of the prefecture. Compared to its size, the bay is relatively shallow with an average depth of {{convert|15|m|ft|abbr=on}} and maximum {{convert|55|m|ft|abbr=on}} depth.<ref name="kankyo">{{cite web|url=http://www.pref.nagasaki.jp/kankyo/oomura/sub4.html|title=大村湾の特徴と現状|publisher=Nagasaki Prefecture |language=Japanese | accessdate=2011-10-30}}</ref>


As a special feature, the bay is surrounded by land in all directions. So, from its form the bay appears as an inland sea. The only two connections to the East China Sea are in the north-west: the {{nihongo|Hario Strait|針尾瀬戸|Hario-seto}} with a minimum width of {{convert|200|m|ft|abbr=on}} and – more eastward – the {{nihongo|Haiki Strait|早岐瀬戸|Haiki-seto}} with a width of {{convert|10|to|200|m|ft|abbr=on}}. However, these two straits do not directrly lead to the open sea, but to the {{nihongo|[[Sasebo Bay]]|佐世保湾|Sasebo-wan}}.<ref name="4sunameri">{{cite web| url=http://www.pref.nagasaki.jp/sizen/4sunameri/024/024.htm |title=大村湾をご存知？ |publisher=Nagasaki Prefecture| language=Japanese |accessdate=2011-10-30}}</ref> In between the Hario and Haiki Straits lies {{nihongo|Hario Island|針尾島|Hario-jima}}. West of the Ōmura Bay lies the {{nihongo|[[Nishisonogi Peninsula]]|西彼杵半島|Nishisonogi-hantō}}, and to the south is the foot of {{nihongo|Mount Kotonoo|琴ノ尾岳|Kotonoo-dake}}. On the eastern shore of the bay is the {{nihongi|Ōmura Plain|大村平野|Ōmura-heiya}}, on which the city of [[Ōmura]] is located.
The bay is surrounded by land in all directions, thus it appears as an inland sea on maps. The only two connections to the East China Sea are in the north-west: the {{nihongo|Hario Strait|針尾瀬戸|Hario-seto}} with a minimum width of {{convert|200|m|ft|abbr=on}} and – more eastward – the {{nihongo|Haiki Strait|早岐瀬戸|Haiki-seto}} with a width of {{convert|10|to|200|m|ft|abbr=on}}. However, these two straits do not directly lead to the open sea, but to the {{nihongo|Sasebo Bay|佐世保湾|Sasebo-wan}}.<ref name="4sunameri">{{cite web| url=http://www.pref.nagasaki.jp/sizen/4sunameri/024/024.htm |title=大村湾をご存知？ |publisher=Nagasaki Prefecture| language=Japanese |accessdate=2011-10-30}}</ref> In between the Hario and Haiki Straits lies [[Hario Island]]. West of the Ōmura Bay lies the {{nihongo|[[Nishisonogi Peninsula]]|西彼杵半島|Nishisonogi-hantō}}, and to the south is the foot of {{nihongo|Mount Kotonoo|琴ノ尾岳|Kotonoo-dake}}. On the eastern shore of the bay is the {{nihongo|Ōmura Plain|大村平野|Ōmura-heiya}}, on which the city of [[Ōmura, Nagasaki|Ōmura]] is located. Opposite Ōmura city lies the largest island of the bay: Mishima (箕島), where [[Nagasaki Airport]] is located. For this purpose, the island first had to be flattened and reshaped.


⚫
Along the bay shore lie the following towns, clockwise from the north: [[Sasebo, Nagasaki|Sasebo]], [[Kawatana, Nagasaki|Kawatana]], [[Higashisonogi, Nagasaki|Higashisonogi]], [[Ōmura, Nagasaki|Ōmura]], [[Isahaya, Nagasaki|Isahaya]], [[Nagayo, Nagasaki|Nagayo]], [[Togitsu, Nagasaki|Togitsu]], [[Nagasaki]] and [[Saikai, Nagasaki|Saikai]].
Opposite to Ōmura city lies the largest island of the bay: Mishima (箕島), which locates [[Nagasaki Airport]]. For this purpose, the island first had to be flattened and reshaped.

⚫
Along the bay shore lie the following towns, clockwise: [[Sasebo, Nagasaki|Sasebo]], [[Kawatana, Nagasaki|Kawatana]], [[Higashisonogi, Nagasaki|Higashisonogi]], [[Ōmura, Nagasaki|Ōmura]], [[Isahaya, Nagasaki|Isahaya]], [[Nagayo, Nagasaki|Nagayo]], [[Togitsu, Nagasaki|Togitsu]], [[Nagasaki]] and [[Saikai, Nagasaki|Saikai]].


== Biology ==
== Biology ==
Because of the geography of the bay there is only a small exchange of water from the bay with the sea. Consequently, the marine life in the bay is different from that in the nearby sea. The bay houses a rare species of [[finless porpoise]], which do not leave the bay during their lifetime. Another special inhabitant – sometimes characterised as a [[living fossil]] – is the [[horseshoe crab]] species ''[[Tachypleus tridentatus]]''. Despite being nearly separated from the sea, and the large cities along its shore, the bay is full of fish. About 60 species of marine animals are fished upon.<ref name="4sunameri" />
Because of the geography of the bay there is only a small exchange of water from the bay with the sea. Consequently, the marine life in the bay is different from that in the nearby sea. The bay houses a rare species of [[finless porpoise]], which does not leave the bay during its lifetime.{{cn|date=May 2023}} [[Indo-Pacific bottlenose dolphin]]s and [[common dolphin]]s may migrate into the basin on unclear regularities. <ref>[[:ja:長崎文化放送|Nagasaki Culture Telecasting Corporation]]. 2016年10月05日. [https://www.ncctv.co.jp/news/25719.html 大村湾にイルカはいるか？]. Retrieved on March 13, 2017</ref> Another special inhabitant – sometimes characterised as a [[living fossil]] – is the [[horseshoe crab]] species ''[[Tachypleus tridentatus]]''. Despite being nearly separated from the sea, and the large cities along its shore, the bay is full of fish. About 60 species of marine animals are fished.<ref name="4sunameri" />


== References ==
== References ==
{{reflist}}
{{reflist}}


{{Authority control}}
{{DEFAULTSORT:Omura Bay}}
{{DEFAULTSORT:Omura Bay}}
[[Category:Bays of Japan]]
[[Category:Bays of Kyushu]]
[[Category:Nagasaki Prefecture]]
[[Category:Landforms of Nagasaki Prefecture]]

[[de:Ōmura-Bucht]]
[[ja:大村湾]]

Latest revision as of 02:27, 11 August 2023

Ōmura Bay
大村湾 (Japanese)
Landsat image of the Ōmura Bay
Ōmura Bay is located in Nagasaki Prefecture
Ōmura Bay
Ōmura Bay
LocationNagasaki Prefecture
Coordinates32°57′00″N 129°52′30″E / 32.95°N 129.875°E / 32.95; 129.875
Ocean/sea sourcesEast China Sea
Basin countriesJapan
Max. length26 km (16 mi)
Max. width11 km (6.8 mi)
Surface area320 km2 (120 sq mi)
Average depth15 m (49 ft)
Max. depth55 m (180 ft)
Shore length1360 km (220 mi)
SettlementsNagasaki
1 Shore length is not a well-defined measure.

Ōmura Bay (大村湾, Ōmura-wan) is a bay located in the center of Nagasaki Prefecture, Japan in the East China Sea.

Geography

[edit]
Vista on Ōmura Bay.

The bay measures about 26 km (16 mi) north-to-south and 11 km (6.8 mi) east-to-west. The length of the shoreline is about 360 km (220 mi) and the surface area is about 320 km2 (120 sq mi). This corresponds with about 8% of the total area of the prefecture. Compared to its size, the bay is relatively shallow with an average depth of 15 m (49 ft) and maximum 55 m (180 ft) depth.[1]

The bay is surrounded by land in all directions, thus it appears as an inland sea on maps. The only two connections to the East China Sea are in the north-west: the Hario Strait (針尾瀬戸, Hario-seto) with a minimum width of 200 m (660 ft) and – more eastward – the Haiki Strait (早岐瀬戸, Haiki-seto) with a width of 10 to 200 m (33 to 656 ft). However, these two straits do not directly lead to the open sea, but to the Sasebo Bay (佐世保湾, Sasebo-wan).[2] In between the Hario and Haiki Straits lies Hario Island. West of the Ōmura Bay lies the Nishisonogi Peninsula (西彼杵半島, Nishisonogi-hantō), and to the south is the foot of Mount Kotonoo (琴ノ尾岳, Kotonoo-dake). On the eastern shore of the bay is the Ōmura Plain (大村平野, Ōmura-heiya), on which the city of Ōmura is located. Opposite Ōmura city lies the largest island of the bay: Mishima (箕島), where Nagasaki Airport is located. For this purpose, the island first had to be flattened and reshaped.

Along the bay shore lie the following towns, clockwise from the north: Sasebo, Kawatana, Higashisonogi, Ōmura, Isahaya, Nagayo, Togitsu, Nagasaki and Saikai.

Biology

[edit]

Because of the geography of the bay there is only a small exchange of water from the bay with the sea. Consequently, the marine life in the bay is different from that in the nearby sea. The bay houses a rare species of finless porpoise, which does not leave the bay during its lifetime.[citation needed] Indo-Pacific bottlenose dolphins and common dolphins may migrate into the basin on unclear regularities. [3] Another special inhabitant – sometimes characterised as a living fossil – is the horseshoe crab species Tachypleus tridentatus. Despite being nearly separated from the sea, and the large cities along its shore, the bay is full of fish. About 60 species of marine animals are fished.[2]

References

[edit]
  1. ^ "大村湾の特徴と現状" (in Japanese). Nagasaki Prefecture. Retrieved 2011-10-30.
  2. ^ a b "大村湾をご存知？" (in Japanese). Nagasaki Prefecture. Retrieved 2011-10-30.
  3. ^ Nagasaki Culture Telecasting Corporation. 2016年10月05日. 大村湾にイルカはいるか？. Retrieved on March 13, 2017
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