geo.wikisort.org - Island

Raikoke (Russian: Райкоке, Japanese: 雷公計島), also spelled Raykoke, is, as of 2019 a Russian uninhabited volcanic island near the centre of the Kuril Islands chain in the Sea of Okhotsk in the northwest Pacific Ocean, 16 kilometres (9.9 mi) distant from the island of Matua. Its name is derived from the Ainu language, from “hellmouth”.

Raikoke

Native name: Райкоке 雷公計島
NASA Landsat view of Raikoke Island
Geography
Location	Sea of Okhotsk
Coordinates	48°17′31″N 153°15′04″E
Archipelago	Kuril Islands
Area	4.6 km2 (1.8 sq mi)
Highest elevation	551 m (1808 ft)
Highest point	Pik Raikoke
Administration
Russia
Demographics
Population	0

Geology

Raikoke is roughly circular, with a length of 2.5 km (1.6 mi) with a width of 2.0 kilometres (1.2 mi), and an area of 4.6 km² (1.8 sq mi).[1] The island is a stratovolcano, its lava composed primarily of basalt.[2] The cone rises above a submarine terrace with a depth of 130 m (430 ft) to a maximum height of 551 m (1,808 ft) above sea level. The steep-walled crater is 700 m (2,300 ft) wide and 200 m (660 ft) deep with lava flows extending along the eastern half of the island. The volcano has most recently erupted in 1765, 1778, 1924 and 2019.[3] The 1778 and 1924 Raikoke eruptions were classified on the Volcanic Explosivity Index scale (that ranges from zero to eight) as VEI-4 or greater. For comparison the volcano Anak Krakatoa eruption in 2018 was also rated as a VEI-4 event.[4] [5][3] The 1778 eruption of Raikoke was the largest of the recent volcanic events destroying the upper third of the island.[6] The only known fatalities from the eruptions was during the 1778 eruption when fifteen were killed from falling lava bombs.[3]

2019 eruption

At approximately 4:03 am, 22 June 2019 it erupted, with a plume of ash and gas reaching between 13,000 m (43,000 ft) and 17,000 m (56,000 ft), passing the tropopause and allowing stratospheric injection of ash and sulfur dioxide.[7]

Fauna

Raikoke is one of five major Steller sea lion rookeries on the Kuril Islands and in the spring and summer it is home to one of the largest northern fulmar aggregations on the Kurils; crested and parakeet auklet, pigeon guillemot, and black-legged kittiwake also nest on the island.[8] Captain Henry James Snow reported that in 1883 some 15,000 northern fur seals inhabited the island. However, by the 1890s only "a few scores" were recorded captured there, almost certainly due to overexploitation by fur hunters. Currently no fur seals reproduce on Raikoke.

History

Raikoke was visited by hunting and fishing parties of the Ainu, but there was no permanent habitation at the time of European contact. The island appears on an official map showing the territories of Matsumae Domain, a feudal domain of Edo Japan dated 1644, and these holdings were officially confirmed by the Tokugawa shogunate in 1715. It was subsequently claimed by the Russian Empire; sovereignty initially passed to Russia under the terms of the Treaty of Shimoda, but was returned to the Empire of Japan per the Treaty of Saint Petersburg along with the rest of the Kuril islands.

The island was formerly administered as part of Shimushu District of Nemuro Subprefecture of Hokkaidō. After World War II, it came under the control of the Soviet Union, and is now administered as part of the Sakhalin Oblast of Russia.

See also

• List of volcanoes in Russia

Notes

References

• Global Volcanism Program

Further reading

• Gorshkov, G. S. Volcanism and the Upper Mantle Investigations in the Kurile Island Arc. Monographs in geoscience. New York: Plenum Press, 1970. ISBN 0-306-30407-4
• Krasheninnikov, Stepan Petrovich, and James Greive. The History of Kamtschatka and the Kurilski Islands, with the Countries Adjacent. Chicago: Quadrangle Books, 1963.
• Rees, David. The Soviet Seizure of the Kuriles. New York: Praeger, 1985. ISBN 0-03-002552-4
• Takahashi, Hideki, and Masahiro Ōhara. Biodiversity and Biogeography of the Kuril Islands and Sakhalin. Bulletin of the Hokkaido University Museum, no. 2-. Sapporo, Japan: Hokkaido University Museum, 2004.

External links

Wikimedia Commons has media related to Raikoke.

• Oceandots at the Wayback Machine (archived December 23, 2010)

На других языках

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[de] Raikoke

Raikoke (russisch Остров Райкоке; japanisch .mw-parser-output .Hani{font-size:110%}雷公計島, Raikoke-tō) ist eine kleine unbewohnte Vulkaninsel im zentralen Bereich der Kurilen. Sie liegt etwa 20 Kilometer nördlich der Insel Matua und gehört administrativ zur russischen Oblast Sachalin.

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- [en] Raikoke

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[es] Raikoke

Raikoke (en ruso: Райкоке) (en japonés, 雷公計島) o Raykoke, es una isla volcánica deshabitada rusa localizada en el archipiélago de las Kuriles, en el mar de Ojotsk, en el noroeste del océano Pacífico. Tiene una superficie de 4.6 km². Pertenece al grupo de las Kuriles centrales. Administrativamente está bajo jurisdicción del óblast de Sajalín.

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[it] Rajkoke

Rajkoke (in russo Райкоке; in giapponese 雷公計島, Raikoke-tō) è un'isola russa che fa parte dell'arcipelago delle Isole Curili ed è situata tra il Mare di Ochotsk e l'Oceano Pacifico settentrionale. Amministrativamente fa parte del Severo-Kuril'skij rajon dell'oblast' di Sachalin, nel Estremo Oriente. Il suo nome viene dalla lingua ainu e significa "porta dell'inferno". L'isola è disabitata.

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[ru] Райкоке

Райкоке (на российской карте 1745-го года — Столповой[2]) — самый северный остров средней группы Большой гряды Курильских островов. Административно входит в Северо-Курильский городской округ Сахалинской области. Необитаем, хотя в прошлом на остров регулярно наведывались айны, охотившиеся на морских животных[3]. В переводе с айнского языка фраза «рахко кэ» означает «место где водятся морские выдры (каланы)»[4].

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