Raikoke
Encyclopedia
Raikoke also spelled Raykoke, is an uninhabited volcanic island near the center of the Kuril Islands
chain in the Sea of Okhotsk
in the northwest Pacific Ocean
, 16 kilometres (9.9 mi) across Golovnin Strait from Matua
. Its name is derived from the Ainu language
, from “hellmouth”.
which rises above a submarine terrace with a depth of 130 meters to a maximum height of 551 metres (1,807.7 ft) above sea level. The steep-walled crater is 700 meters wide and 200 meters deep, and lava flows extend along the eastern half of the island. The volcano erupted explosively in 1778, destroying the upper third of the island. The volcano remains active, erupting strongly again in 1924.
aggregations on the Kurils. Captain Henry James Snow reported that in 1883 some 15,000 northern fur seal
s 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.
, 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 period
Japan
dated 1644, and these holdings were officially confirmed by the Tokugawa shogunate
in 1715. Subsequently claimed by the Empire of Russia, 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 (1875) along with the rest of the Kurile islands. The island was formerly administered as part of Shimushu District of Nemuro Subprefecture
of Hokkaidō
.
After World War II
, the island came under the control of the Soviet Union
, and is now administered as part of the Sakhalin Oblast
of the Russian Federation.
Kuril Islands
The Kuril Islands , in Russia's Sakhalin Oblast region, form a volcanic archipelago that stretches approximately northeast from Hokkaidō, Japan, to Kamchatka, Russia, separating the Sea of Okhotsk from the North Pacific Ocean. There are 56 islands and many more minor rocks. It consists of Greater...
chain in the Sea of Okhotsk
Sea of Okhotsk
The Sea of Okhotsk is a marginal sea of the western Pacific Ocean, lying between the Kamchatka Peninsula on the east, the Kuril Islands on the southeast, the island of Hokkaidō to the far south, the island of Sakhalin along the west, and a long stretch of eastern Siberian coast along the west and...
in the northwest Pacific Ocean
Pacific Ocean
The Pacific Ocean is the largest of the Earth's oceanic divisions. It extends from the Arctic in the north to the Southern Ocean in the south, bounded by Asia and Australia in the west, and the Americas in the east.At 165.2 million square kilometres in area, this largest division of the World...
, 16 kilometres (9.9 mi) across Golovnin Strait from Matua
Matua
Matua may refer to:* Matua_Mahasangha, a sect of Hinduism in Bengal.* Matua , another name for the island of Matsuwa located in the Kurilian archipelago northeast of Japan between Hokkaidō and the Kamchatka Peninsula of Russia...
. Its name is derived from the Ainu language
Ainu language
Ainu is one of the Ainu languages, spoken by members of the Ainu ethnic group on the northern Japanese island of Hokkaidō....
, from “hellmouth”.
Geology
Raikoke is roughly circular, with a length of 2.5 kilometres (1.6 mi) with a width of 2 kilometres (1.2 mi), and an area of 4.6 square kilometres (1.8 sq mi). The island is a stratovolcanoStratovolcano
A stratovolcano, also known as a composite volcano, is a tall, conical volcano built up by many layers of hardened lava, tephra, pumice, and volcanic ash. Unlike shield volcanoes, stratovolcanoes are characterized by a steep profile and periodic, explosive eruptions...
which rises above a submarine terrace with a depth of 130 meters to a maximum height of 551 metres (1,807.7 ft) above sea level. The steep-walled crater is 700 meters wide and 200 meters deep, and lava flows extend along the eastern half of the island. The volcano erupted explosively in 1778, destroying the upper third of the island. The volcano remains active, erupting strongly again in 1924.
Sea lion habitat
Raikoke is one of five major Steller sea lion rookeries on the Kuril Islands and home to one of the largest Northern FulmarNorthern Fulmar
The Northern Fulmar, Fulmarus glacialis, Fulmar, or Arctic Fulmar is a highly abundant sea bird found primarily in subarctic regions of the north Atlantic and north Pacific oceans. Fulmars come in one of two color morphs: a light one which is almost entirely white, and a dark one which is...
aggregations on the Kurils. Captain Henry James Snow reported that in 1883 some 15,000 northern fur seal
Northern Fur Seal
The Northern fur seal is an eared seal found along the north Pacific Ocean, the Bering Sea and the Sea of Okhotsk. It is the largest member of the fur seal subfamily and the only species in the genus Callorhinus.-Physical description:Northern fur seals have extreme sexual dimorphism, with males...
s inhabited the island. However, by the 1890s only "a few scores" were recorded captured there, almost certainly due to overexploitation
Overexploitation
Overexploitation, also called overharvesting, refers to harvesting a renewable resource to the point of diminishing returns. Sustained overexploitation can lead to the destruction of the resource...
by fur hunters. Currently no fur seals reproduce on Raikoke.
History
Raikoke was visited by hunting and fishing parties of the AinuAinu people
The , also called Aynu, Aino , and in historical texts Ezo , are indigenous people or groups in Japan and Russia. Historically they spoke the Ainu language and related varieties and lived in Hokkaidō, the Kuril Islands, and much of Sakhalin...
, 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
Matsumae clan
The was a Japanese clan which was granted the area around Matsumae, Hokkaidō as a march fief in 1590 by Toyotomi Hideyoshi, and charged with defending it, and by extension all of Japan, from the Ainu 'barbarians' to the north. The clan was originally known as the Kakizaki clan who settled...
, a feudal domain of Edo period
Edo period
The , or , is a division of Japanese history which was ruled by the shoguns of the Tokugawa family, running from 1603 to 1868. The political entity of this period was the Tokugawa shogunate....
Japan
Japan
Japan is an island nation in East Asia. Located in the Pacific Ocean, it lies to the east of the Sea of Japan, China, North Korea, South Korea and Russia, stretching from the Sea of Okhotsk in the north to the East China Sea and Taiwan in the south...
dated 1644, and these holdings were officially confirmed by the Tokugawa shogunate
Tokugawa shogunate
The Tokugawa shogunate, also known as the and the , was a feudal regime of Japan established by Tokugawa Ieyasu and ruled by the shoguns of the Tokugawa family. This period is known as the Edo period and gets its name from the capital city, Edo, which is now called Tokyo, after the name was...
in 1715. Subsequently claimed by the Empire of Russia, sovereignty
Sovereignty
Sovereignty is the quality of having supreme, independent authority over a geographic area, such as a territory. It can be found in a power to rule and make law that rests on a political fact for which no purely legal explanation can be provided...
initially passed to Russia under the terms of the Treaty of Shimoda
Treaty of Shimoda
The Treaty of Shimoda of 1855, formally Treaty of Commerce and Navigation between Japan and Russia , was signed between the Russian Vice-Admiral Euphimy Vasil'evich Putiatin and Toshiakira Kawaji of Japan in the city of Shimoda, Izu Province, Japan, on February 7, 1855...
, but was returned to the Empire of Japan
Empire of Japan
The Empire of Japan is the name of the state of Japan that existed from the Meiji Restoration on 3 January 1868 to the enactment of the post-World War II Constitution of...
per the Treaty of Saint Petersburg (1875) along with the rest of the Kurile islands. The island was formerly administered as part of Shimushu District of Nemuro Subprefecture
Nemuro Subprefecture
is a subprefecture of Hokkaidō, Japan. The Japanese claim the disputed Southern Kurile Islands as part of this subprefecture....
of Hokkaidō
Hokkaido
, formerly known as Ezo, Yezo, Yeso, or Yesso, is Japan's second largest island; it is also the largest and northernmost of Japan's 47 prefectural-level subdivisions. The Tsugaru Strait separates Hokkaido from Honshu, although the two islands are connected by the underwater railway Seikan Tunnel...
.
After World War II
World War II
World War II, or the Second World War , was a global conflict lasting from 1939 to 1945, involving most of the world's nations—including all of the great powers—eventually forming two opposing military alliances: the Allies and the Axis...
, the island came under the control of the Soviet Union
Soviet Union
The Soviet Union , officially the Union of Soviet Socialist Republics , was a constitutionally socialist state that existed in Eurasia between 1922 and 1991....
, and is now administered as part of the Sakhalin Oblast
Sakhalin Oblast
Sakhalin Oblast is a federal subject of Russia comprising the island of Sakhalin and the Kuril Islands.The oblast has an area of 87,100 km² and a population of 546,695...
of the Russian Federation.
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.