Kagoshima Bay

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Kagashima Bay
Kagoshima Bay (left) and Osumi Peninsula

Kagoshima Bay (left) and Osumi Peninsula

Waters East China Sea
Land mass Kyushu, Japan
Geographical location 31 ° 24 ′  N , 130 ° 39 ′  E Coordinates: 31 ° 24 ′  N , 130 ° 39 ′  E
Kagashima Bay (Kagoshima Prefecture)
Kagashima Bay
width 20 km
length 80 km
surface 1 130  km²
Greatest water depth 237 m
Medium water depth 117 m

The Kagoshima Bay ( Jap. 鹿児島湾 , Kagoshima-wan ) and Kinko Bay ( 錦江湾 , Kinko-wan ) is a nearly 80 km deep into the country inside drastic sea bay in the extreme south of the island of Kyushu , the southernmost of the four main islands Japan .

geography

Kagoshima and the Sakurajima volcano
Kagoshima Bay and Sakurajima, view from Kirishima
Space radar image of the Sakurajima, Aira Caldera and Kagoshima Bay

The bay extends in north-south direction between two peninsulas , the Satsuma Peninsula in the west and the Ōsumi Peninsula in the east, and is an internal body of water of Japan under international law . It is about 20 km wide and has an area of ​​1130 km 2 . The water depth averages 117 m and reaches 237 m at the deepest point. At the mouth of the bay, the water depth is only about 100 m.

On the west bank, on the Satsuma Peninsula, lies the industrial and port city of Kagoshima , the capital of the prefecture. Other cities on the bay are Aira in the northwest, Kirishima in the north, Ibusuki in the southwest, and Tarumizu on the Ōsumi peninsula in the east, Kanoya and Kinkō in the southeast and Minamiōsumi in the south.

geology

The northern part of the bay, the approximately 17 × 23 km so-called Aira Caldera ( Japanese 姶 良 カ ル デ ラ ), was formed about 26-29,000 years ago during a massive volcanic eruption .

On the southern edge of the Aira Caldera, in the middle of Kagoshima Bay, immediately east of the city center of Kagoshima, is the approximately 13,000 year old Sakurajima volcano . It was formed after the collapse of the Aira caldera and is one of the most active volcanoes in Japan. Since an eruption in 1914, its former volcanic island has been connected at one point to the Ōsumi peninsula of the Kyūshū mainland in the east of the bay.

The last major eruptions took place on March 13, 2011 and August 18, 2013. However, Kagoshima and the entire area are almost always affected by volcanic ash emissions , because a steady stream of smoke and ash rises from the volcano, accompanied by loud sounds almost every day Mini eruptions. Children in Kagoshima must wear hard hats on the way to school, and an umbrella is advisable on active days to protect against ash fall.

Hydrology

A branch of the Kuroshio , an extension of the warm Pacific North Equatorial Current flowing in a northerly direction , flows over the estuary sill into the bay, whose calm and 22 degree warm water with different habitats offers excellent environmental conditions for a variety of marine plants and animals.

literature

Web links

Commons : Kagoshima Bay  - Collection of Images, Videos, and Audio Files

Remarks

  1. Formation of the Aira Caldera, Southern Kyūshū, ~ 22000 years ago , bibcode : 1984JGR .... 89.8485A
  2. Japan Meteorological Agency ( Memento of the original from March 10, 2014 in the Internet Archive ) Info: The archive link was automatically inserted and not yet checked. Please check the original and archive link according to the instructions and then remove this notice.  @1@ 2Template: Webachiv / IABot / ds.data.jma.go.jp
  3. "Sakurajima spews its highest volcanic column ever at 5,000 meters" in Asahi Shimbun ( Memento from March 4, 2016 in the Internet Archive )
  4. Ludwigshafen University of Applied Sciences, East Asia Institute: Kagoshima ( Memento of the original from March 11, 2014 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice.  @1@ 2Template: Webachiv / IABot / www.oai.de
  5. Japan Long-Term Ecological Research (JaLTER): Kagoshima Bay