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Onekotan Island
Onekotan (russian: Онекотан; Japanese 温禰古丹島; Onekotan-tō, occasionally Onnekotan-tō, ain, オネコタン or オネコタㇴ) is an uninhabited volcanic island located near the northern end of the Kuril Islands chain in the Sea of Okhotsk in the northwest Pacific Ocean. Its name is derived from the Ainu language for "large village”. It is the second largest island, after Paramushir, in the northern subgroup of the Kurils. It is administratively included in the Severo-Kurilsky District of Sakhalin oblast, Russia. Geography and geology Onekotan is roughly rectangular, with a length of , and a width ranging from . It has an area of The island consists of two stratovolcanos connected by a relatively flat isthmus. * Krenitsyn -(russian: Креницын ; Japanese 黒石山; ''Kuroishiyama'') with a height of is the prominent caldera at the southern end of the island. This volcano was named after Captain Pyotr Krenitsyn of the Imperial Russian Navy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sea Of Okhotsk
The Sea of Okhotsk ( rus, Охо́тское мо́ре, Ohótskoye móre ; ja, オホーツク海, Ohōtsuku-kai) is a marginal sea of the western Pacific Ocean. It is located between Russia's Kamchatka Peninsula on the east, the Kuril Islands on the southeast, Japan's island of Hokkaido on the south, the island of Sakhalin along the west, and a stretch of eastern Siberian coast along the west and north. The northeast corner is the Shelikhov Gulf. The sea is named after the Okhota river, which in turn named after the Even word () meaning "river". Geography The Sea of Okhotsk covers an area of , with a mean depth of and a maximum depth of . It is connected to the Sea of Japan on either side of Sakhalin: on the west through the Sakhalin Gulf and the Gulf of Tartary; on the south through the La Pérouse Strait. In winter, navigation on the Sea of Okhotsk is impeded by ice floes. Ice floes form due to the large amount of freshwater from the Amur River, lowering the salinity o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tao-Rusyr Caldera
Tao-Rusyr Caldera (russian: Тао-Русыр) is a stratovolcano located at the southern end of Onekotan Island, Kuril Islands, Russia. It has 7.5 km wide caldera formed during a catastrophic eruption less than 10,000 years ago (reported ages range from 5,550 to 9,400 Before Present). The waters of Kol'tsevoe Lake (russian: Кольцевое озеро, Ring Lake) fill the caldera, along with a large symmetrical andesitic cone, Krenitsyn Peak, that rises as an island within the lake. This volcano was named after Captain Pyotr Krenitsyn of the Imperial Russian Navy. The most recent eruption, in 1952, formed a small lava dome on the island's coast. Krenitsyn Peak has a summit crater 350 m wide and is the highest point of the volcano and on the entire Onekotan Island. Another caldera, Nemo Peak, lies at the northern end of the island, and it also contains a central cone and crater lake. The caldera forming eruption yielded about of material and destroyed the upper parts o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Edo Period
The or is the period between 1603 and 1867 in the history of Japan, when Japan was under the rule of the Tokugawa shogunate and the country's 300 regional '' daimyo''. Emerging from the chaos of the Sengoku period, the Edo period was characterized by economic growth, strict social order, isolationist foreign policies, a stable population, perpetual peace, and popular enjoyment of arts and culture. The period derives its name from Edo (now Tokyo), where on March 24, 1603, the shogunate was officially established by Tokugawa Ieyasu. The period came to an end with the Meiji Restoration and the Boshin War, which restored imperial rule to Japan. Consolidation of the shogunate The Edo period or Tokugawa period is the period between 1603 and 1867 in the history of Japan, when Japan was under the rule of the Tokugawa shogunate and the country's regional '' daimyo''. A revolution took place from the time of the Kamakura shogunate, which existed with the Tennō's court, to the Tok ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Han (administrative Division)
( ja, 藩, "domain") is a Japanese historical term for the estate of a daimyo in the Edo period (1603–1868) and early Meiji period (1868–1912). Nussbaum, Louis-Frédéric. (2005)"Han"in ''Japan Encyclopedia'', p. 283. or (daimyo domain) served as a system of ''de facto'' administrative divisions of Japan alongside the ''de jure'' provinces until they were abolished in the 1870s. History Pre-Edo period The concept of originated as the personal estates of prominent warriors after the rise of the Kamakura Shogunate in 1185, which also saw the rise of feudalism and the samurai noble warrior class in Japan. This situation existed for 400 years during the Kamakura Shogunate (1185–1333), the brief Kenmu Restoration (1333–1336), and the Ashikaga Shogunate (1336–1573). became increasingly important as ''de facto'' administrative divisions as subsequent Shoguns stripped the Imperial provinces () and their officials of their legal powers. Edo period Toyotomi Hideyoshi, the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Matsumae Clan
The was a Japanese clan that was confirmed in the possession of the area around Matsumae, Hokkaidō as a march fief in 1590 by Toyotomi Hideyoshi, and charged with defending it, and by extension the whole of Japan, from the Ainu "barbarians" of the north. The clan, originally known as the Kakizaki clan (蠣崎氏), had settled in Kakizaki, Kawauchi, Mutsu on the Shimokita Peninsula. Claiming descent from the Takeda clan of Wakasa Province, the family later took the name Matsumae. In exchange for their service in defending the country, the Matsumae were made exempt from owing rice to the shogunate in tribute, and from the ''sankin-kōtai'' system, under which most ''daimyōs'' (feudal lords of Edo period Japan) were required to spend half the year at Edo, while their families spent the entire year at Edo and were, essentially, held hostage to prevent rebellion. Relations with the Ainu and Russia Due to their location, and their role as border defenders, the Matsumae wer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Snow
Snow comprises individual ice crystals that grow while suspended in the atmosphere—usually within clouds—and then fall, accumulating on the ground where they undergo further changes. It consists of frozen crystalline water throughout its life cycle, starting when, under suitable conditions, the ice crystals form in the atmosphere, increase to millimeter size, precipitate and accumulate on surfaces, then metamorphose in place, and ultimately melt, slide or sublimate away. Snowstorms organize and develop by feeding on sources of atmospheric moisture and cold air. Snowflakes nucleate around particles in the atmosphere by attracting supercooled water droplets, which freeze in hexagonal-shaped crystals. Snowflakes take on a variety of shapes, basic among these are platelets, needles, columns and rime. As snow accumulates into a snowpack, it may blow into drifts. Over time, accumulated snow metamorphoses, by sintering, sublimation and freeze-thaw. Where the climate is co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lava Dome
In volcanology, a lava dome is a circular mound-shaped protrusion resulting from the slow extrusion of viscous lava from a volcano. Dome-building eruptions are common, particularly in convergent plate boundary settings. Around 6% of eruptions on Earth are lava dome forming. The geochemistry of lava domes can vary from basalt (e.g. Semeru, 1946) to rhyolite (e.g. Chaiten, 2010) although the majority are of intermediate composition (such as Santiaguito, dacite-andesite, present day) The characteristic dome shape is attributed to high viscosity that prevents the lava from flowing very far. This high viscosity can be obtained in two ways: by high levels of silica in the magma, or by degassing of fluid magma. Since viscous basaltic and andesitic domes weather fast and easily break apart by further input of fluid lava, most of the preserved domes have high silica content and consist of rhyolite or dacite. Existence of lava domes has been suggested for some domed structures on the Mo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Active Volcano
An active volcano is a volcano which is either erupting or is likely to erupt in the future. An active volcano which is not currently erupting is known as a dormant volcano. Overview Tlocene Epoch. Most volcanoes are situated on the Pacific Ring of Fire. An estimated 500 million people live near active volcanoes. ''Historical time'' (or recorded history) is another timeframe for ''active''. However, the span of recorded history differs from region to region. In China and the Mediterranean, it reaches back nearly 3,000 years, but in the Pacific Northwest of the United States and Canada, it reaches back less than 300 years, and in Hawaii and New Zealand it is only around 200 years. The incomplete ''Catalogue of the Active Volcanoes of the World'', published in parts between 1951 and 1975 by the International Association of Volcanology, uses this definition, by which there are more than 500 active volcanoes. , the Smithsonian Global Volcanism Program recognizes 560 volcanoes with ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kharimkotan
Kharimkotan (russian: Харимкотан); Japanese 春牟古丹島; Harimukotan-tō, alternatively Harumukotan-tō or 加林古丹島; Karinkotan-tō) is an uninhabited volcanic island located from Onekotan near the northern end of the Kuril Islands chain in the Sea of Okhotsk in the northwest Pacific Ocean. Its name is derived from the Ainu language, from “village of many Cardiocrinum”. Geology Kharimkotan is roughly oval, measuring by with an area of . The landscapes of the island are quite diverse; however, a significant part of the island's surface is covered with fine yellow ash, resembling desert dunes. On the north-western cape are the ruins of an Ainu village and in the north of the island, on the shore of Severgin Bay, is the abandoned settlement of Severgino. There are a number of small freshwater lakes. Kharimkotan is separated by the Sixth Kuril Strait from Onekotan, located 15 kilometers to the northeast, and by the Severgin Strait from Shiashkotan, lo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Makanrushi
Makanrushi (russian: Маканруши; Japanese 磨勘留島; Makanru-tō) is an uninhabited volcanic island located near the northern end of the Kuril Islands chain in the Sea of Okhotsk in the northwest Pacific Ocean. Its name is derived from the Ainu language. Geology Makanrushi is roughly rectangular, with an area of The island consists of a dormant or extinct stratovolcano, Pik Mitaka -(russian: влк.Митака ; Japanese 三高山; ''Mitakayama''), which rises to above sea level. The island has steep cliff sides and no sandy beaches, making landing very difficult and dangerous even in calm weather. Makanrushi is 28 km away from Onekotan. Makanrushi thus lies behind the main currently-active arc of Kuril Island volcanoes. History Makanrushi appears to have never been inhabited. It 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 Tok ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Krenitsyn Strait
Krenitsyn Strait (Russian: ''Proliv Krenitsyna''; Japanese: ''Harumukotan Kaikyo'') is a strait that separates the islands of Onekotan to the north from Kharimkotan to the south. It is 12 km (7.5 mi) wide. The flood tidal current in the strait sets northwest, while the ebb flows to the southeast. The former creates tide rips and eddies. These currents may reach up to four knots A knot is a fastening in rope or interwoven lines. Knot may also refer to: Places * Knot, Nancowry, a village in India Archaeology * Knot of Isis (tyet), symbol of welfare/life. * Minoan snake goddess figurines#Sacral knot Arts, entertainme ....National Geospatial-Intelligence Agency. (2014). ''Sailing Directions (Enroute): East Coast of Russia''. U.S. Government, Springfield, Virginia. References Straits of the Kuril Islands {{SakhalinOblast-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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