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Mount Iō (Shiretoko)
also Mount Iwo is an active andesitic stratovolcano on the Shiretoko Peninsula of Hokkaidō, Japan. It sits within the borders of the town of Shari. Mount Iō is known for erupting liquid sulphur in the eruptions of 1889 and 1936. Mount Iō literally means, ''sulphur mountain''. There are two explosion craters and a lava dome at the summit of the volcano.神沼克伊,小山悦郎 ''日本の火山を科学する 日本列島津々浦々、あなたの身近にある108の活火山とは？'' ソフトバンククリエイティブ 2011. . History of eruptions Volcanic activity started at least 240,000 years ago. Mount Iō has erupted at the following times: #850 AD ± 500 years #1857–1858 #23–26 September 1876 #24–26 November 1880 #9–26 August 1889 #15 June 1890–unknown #December 1935–October 1936 See also * Shiretoko National Park * List of mountains in Japan * List of volcanoes in Japan This is a list of active and extinct volcanoes in Japan. An Orange ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Mountains And Hills Of Japan By Height ...
The following is a list of the mountains and hills of Japan, ordered by height. Mountains over 1000 meters Mountains under 1000 meters As the generally accepted definition of a mountain (versus a hill) is 1000 m of height and 500 m of prominence, the following list is provided for convenience only. See also * List of Japanese prefectures by highest mountain References External links Mt. Nakanodake：Hiking route｜Snow Country* * Japan 100 Mountains {{DEFAULTSORT:List Of Mountains And Hills Of Japan By Height Mountains of Japan Height Height is measure of vertical distance, either vertical extent (how "tall" something or someone is) or vertical position (how "high" a point is). For example, "The height of that building is 50 m" or "The height of an airplane in-flight is abou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Andesitic
Andesite () is a volcanic rock of intermediate composition. In a general sense, it is the intermediate type between silica-poor basalt and silica-rich rhyolite. It is fine-grained (aphanitic) to porphyritic in texture, and is composed predominantly of sodium-rich plagioclase plus pyroxene or hornblende. Andesite is the extrusive equivalent of plutonic diorite. Characteristic of subduction zones, andesite represents the dominant rock type in island arcs. The average composition of the continental crust is andesitic. Along with basalts, andesites are a component of the Martian crust. The name ''andesite'' is derived from the Andes mountain range, where this rock type is found in abundance. It was first applied by Christian Leopold von Buch in 1826. Description Andesite is an aphanitic (fine-grained) igneous rock that is intermediate in its content of silica and low in alkali metals. It has less than 20% quartz and 10% feldspathoid by volume, with at least 65% of the feldsp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Volcanoes Of Hokkaido
A volcano is a rupture in the crust of a planetary-mass object, such as Earth, that allows hot lava, volcanic ash, and gases to escape from a magma chamber below the surface. On Earth, volcanoes are most often found where tectonic plates are diverging or converging, and most are found underwater. For example, a mid-ocean ridge, such as the Mid-Atlantic Ridge, has volcanoes caused by divergent tectonic plates whereas the Pacific Ring of Fire has volcanoes caused by convergent tectonic plates. Volcanoes can also form where there is stretching and thinning of the crust's plates, such as in the East African Rift and the Wells Gray-Clearwater volcanic field and Rio Grande rift in North America. Volcanism away from plate boundaries has been postulated to arise from upwelling diapirs from the core–mantle boundary, deep in the Earth. This results in hotspot volcanism, of which the Hawaiian hotspot is an example. Volcanoes are usually not created where two tectonic plates slide pa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stratovolcanoes Of Japan
A stratovolcano, also known as a composite volcano, is a Volcanic cone, conical volcano built up by many layers (strata) of hardened lava and tephra. Unlike shield volcanoes, stratovolcanoes are characterized by a steep profile with a summit crater and periodic intervals of explosive eruptions and effusive eruptions, although some have collapsed summit craters called calderas. The lava flowing from stratovolcanoes typically cools and hardens before spreading far, due to high viscosity. The magma forming this lava is often felsic, having high-to-intermediate levels of silica (as in rhyolite, dacite, or andesite), with lesser amounts of less-viscous Igneous rock#Mineralogical classification, mafic magma. Extensive felsic lava flows are uncommon, but have travelled as far as . Stratovolcanoes are sometimes called composite volcanoes because of their composite stratified structure, built up from sequential outpourings of erupted materials. They are among the most common types of v ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shiretoko National Park
covers most of the Shiretoko Peninsula at the northeastern tip of the island of Hokkaidō, Japan. The word "Shiretoko" is derived from an Ainu word "sir etok", meaning "the place where the earth protrudes". One of the most remote regions in Japan, much of the peninsula is only accessible on foot or by boat. Shiretoko is best known as the home of Japan's largest population of brown bears, and for offering views of Kunashiri Island, ownership of which Japan and Russia dispute. Shiretoko is also the home of many birds, such as Steller's sea eagle and white-tailed eagle, and marine animals such as spotted seal, orca whale, and sperm whale. The park has a hot springs waterfall called . '' Kamui wakka'' means "water of the gods" in Ainu. The forests of the park are temperate and subalpine mixed forests; the main tree species include Sakhalin fir (''Abies sachalinensis''), Erman's birch ('' Betula ermanii'') and Mongolian oak (''Quercus mongolica''). Beyond the forest limit there a ... [...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] |
Shari, Hokkaidō
is a town located in Okhotsk Subprefecture, Hokkaido, Japan. As of September 2016, the town has an estimated population of 11,897 and a population density of 16 persons per km2. The total area is 736.97 km2. Shiretoko National Park is situated within Shari. During World War 2 on 22 June 1945 Shari came under attack from the submarine USS Barb. This attack was notable for being the first submarine-based rocket attack against a surface target. Notable people from Shari *Tatsuhikari Kumagoro, former sumo ringer *Tsutomu Takebe was secretary general of Japan's Liberal Democratic Party from 2004 to 2006. He was succeeded by Hidenao Nakagawa is a Japanese politician who is a member of the Liberal Democratic Party and the House of Representatives of the Diet (parliam ..., politician Climate References External links *Official Website Towns in Hokkaido {{Hokkaido-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stratovolcano
A stratovolcano, also known as a composite volcano, is a conical volcano built up by many layers (strata) of hardened lava and tephra. Unlike shield volcanoes, stratovolcanoes are characterized by a steep profile with a summit crater and periodic intervals of explosive eruptions and effusive eruptions, although some have collapsed summit craters called calderas. The lava flowing from stratovolcanoes typically cools and hardens before spreading far, due to high viscosity. The magma forming this lava is often felsic, having high-to-intermediate levels of silica (as in rhyolite, dacite, or andesite), with lesser amounts of less-viscous mafic magma. Extensive felsic lava flows are uncommon, but have travelled as far as . Stratovolcanoes are sometimes called composite volcanoes because of their composite stratified structure, built up from sequential outpourings of erupted materials. They are among the most common types of volcanoes, in contrast to the less common shield volca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kuril Islands
The Kuril Islands or Kurile Islands (; rus, Кури́льские острова́, r=Kuril'skiye ostrova, p=kʊˈrʲilʲskʲɪjə ɐstrɐˈva; Japanese: or ) are a volcanic archipelago currently administered as part of Sakhalin Oblast in the Russian Far East. It stretches approximately northeast from Hokkaido in Japan to Kamchatka Peninsula in Russia separating the Sea of Okhotsk from the north Pacific Ocean. There are 56 islands and many minor rocks. The Kuril Islands consist of the Greater Kuril Chain and the Lesser Kuril Chain. They cover an area of around , with a population of roughly 20,000. The islands have been under Russian administration since their 1945 invasion as the Soviet Union towards the end of World War II. Japan claims the four southernmost islands, including two of the three largest ( Iturup and Kunashir), as part of its territory, as well as Shikotan and the Habomai islets, which has led to the ongoing Kuril Islands dispute. The disputed islands are k ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Volcanoes In Japan
This is a list of active and extinct volcanoes in Japan. An Orange background indicates a volcano considered active by the Japan Meteorological Agency. Hokkaido Honshū Izu Islands Ogasawara Archipelago The Ogasawara Archipelago include the Bonin Islands and Volcano Islands. Kyūshū Ryūkyū Islands See also * Notes and references Notes References External links Quaternary Volcanoes of Japan- Geological Survey of Japan - Geological Survey of Japan * ttp://www.data.jma.go.jp/svd/vois/data/tokyo/STOCK/souran_eng/souran.htm The National Catalogue of the Active Volcanoes in Japan- Japan Meteorological Agency 日本の主な山岳標高 (Elevation of Principal Mountains in Japan)- Geospatial Information Authority of Japan {{Asia topic, List of volcanoes in Japan Lists of coordinates Volcanoes A volcano is a rupture in the crust of a planetary-mass object, such as Earth, that allows hot lava, volcanic ash, and gases to escape from a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stratovolcano
A stratovolcano, also known as a composite volcano, is a conical volcano built up by many layers (strata) of hardened lava and tephra. Unlike shield volcanoes, stratovolcanoes are characterized by a steep profile with a summit crater and periodic intervals of explosive eruptions and effusive eruptions, although some have collapsed summit craters called calderas. The lava flowing from stratovolcanoes typically cools and hardens before spreading far, due to high viscosity. The magma forming this lava is often felsic, having high-to-intermediate levels of silica (as in rhyolite, dacite, or andesite), with lesser amounts of less-viscous mafic magma. Extensive felsic lava flows are uncommon, but have travelled as far as . Stratovolcanoes are sometimes called composite volcanoes because of their composite stratified structure, built up from sequential outpourings of erupted materials. They are among the most common types of volcanoes, in contrast to the less common shield volca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geospatial Information Authority
The , or GSI, is the national institution responsible for surveying and mapping the national land of Japan. The former name of the organization from 1949 until March 2010 was Geographical Survey Institute; despite the rename, it retains the same initials. It is an extraordinary organ of the Ministry of Land, Infrastructure, Transport and Tourism. Its main offices are situated in Tsukuba City of Ibaraki Prefecture. It also runs a museum, situated in Tsukuba, the Science Museum of Map and Survey. Earthquake Precursor Prediction Research Stationary MT monitoring systems have been installed in Japan since April 1996, providing a continuous recording of MT signals at the Mizusawa Geodetic Observatory and the Esashi Station of the GSI. These stations measure fluctuations in the earth's electromagnetic field that correspond with seismic activity. The raw geophysical time-series data from these monitoring stations is freely available to the scientific community, enabling further study ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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