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Farallon De Pajaros
Farallón de Pájaros (from Spanish ''Farallón de Pájaros'', meaning "Birds' Sea Stack", see Stack (geology)), also known as Uracus or Urracas (from Spanish ''Urracas'', meaning "Magpies"), is a small (2.3 km2) uninhabited volcanic island, the northernmost island in the Northern Mariana Islands chain. History From 1899 to 1914, Farallón de Pájaros was controlled by the German Empire and was administered as part of the colony of German New Guinea. In 1903 the island was leased to a Japanese company, which hunted birds whose feathers were exported to Japan and then to Paris. After World War I, the island was awarded to the Empire of Japan, by the League of Nations as part of the South Seas Mandate. After World War II, Farallón de Pájaros was awarded to the United States as part of the UN Trust Territory of the Pacific Islands, and is currently administered as part of the Northern Islands Municipality of the Commonwealth of the Northern Mariana Islands. In 1985, per t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mariana Islands
The Mariana Islands (; also the Marianas; in Chamorro: ''Manislan Mariånas'') are a crescent-shaped archipelago comprising the summits of fifteen longitudinally oriented, mostly dormant volcanic mountains in the northwestern Pacific Ocean, between the 12th and 21st parallels north and along the 145th meridian east. They lie south-southeast of Japan, west-southwest of Hawaii, north of New Guinea and east of the Philippines, demarcating the Philippine Sea's eastern limit. They are found in the northern part of the western Oceanic sub-region of Micronesia, and are politically divided into two jurisdictions of the United States: the Commonwealth of the Northern Mariana Islands and, at the southern end of the chain, the territory of Guam. The islands were named after the influential Spanish queen Mariana of Austria following their colonization in the 17th century. The indigenous inhabitants are the Chamorro people. Archaeologists in 2013 reported findings which indicated that the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Northern Islands Municipality
Northern Islands Municipality is one of the four main political divisions of the Commonwealth of the Northern Mariana Islands. It consists of a long string of the northernmost islands of the Northern Marianas, including (from north to south) Farallon de Pajaros, the Maug Islands, Asuncion, Agrihan, Pagan, Alamagan, Guguan, Zealandia Bank, Sarigan, Anatahan, and Farallon de Medinilla. The total land area of the islands, including offshore islets and rocks, is 154.755 km² (59.75 sq mi). Population As of the 2010 census, the municipality is reported to be uninhabited. Pagan and Agrihan are known to have seasonal populations. Many Northern Island inhabitants have secondary residences on Saipan due to economic, educational or other needs. Some islands had also been evacuated due to volcanic activities such as in the case of Anatahan (2003) and Pagan (early 1980s). The mayor's office and municipality administration, traditionally in the village of Shomushon on Pagan, is now ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Submarine Volcano
Submarine volcanoes are underwater vents or fissures in the Earth's surface from which magma can erupt. Many submarine volcanoes are located near areas of tectonic plate formation, known as mid-ocean ridges. The volcanoes at mid-ocean ridges alone are estimated to account for 75% of the magma output on Earth.Martin R. Speight, Peter A. Henderson, "Marine Ecology: Concepts and Applications", John Wiley & Sons, 2013. . Although most submarine volcanoes are located in the depths of seas and oceans, some also exist in shallow water, and these can discharge material into the atmosphere during an eruption. The total number of submarine volcanoes is estimated to be over 1 million (most are now extinct) of which some 75,000 rise more than 1 km above the seabed. Only 119 submarine volcanoes in Earth's oceans and seas are known to have erupted during the last 11,700 years. Hydrothermal vents, sites of abundant biological activity, are commonly found near submarine volcanoes. Effe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Volcanic Eruptions
Several types of volcanic eruptions—during which lava, tephra (ash, lapilli, volcanic bombs and volcanic blocks), and assorted gases are expelled from a volcanic vent or fissure—have been distinguished by volcanologists. These are often named after famous volcanoes where that type of behavior has been observed. Some volcanoes may exhibit only one characteristic type of eruption during a period of activity, while others may display an entire sequence of types all in one eruptive series. There are three different types of eruptions: * Magmatic eruptions are the most well-observed type of eruption. They involve the decompression of gas within magma that propels it forward. * Phreatic eruptions are driven by the superheating of steam due to the close proximity of magma. This type exhibits no magmatic release, instead causing the granulation of existing rock. * Phreatomagmatic eruptions are driven by the direct interaction of magma and water, as opposed to phreatic eruptio ... [...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] |
Japan
Japan ( ja, 日本, or , and formally , ''Nihonkoku'') is an island country in East Asia. It is situated in the northwest Pacific Ocean, and is bordered on the west by the Sea of Japan, while extending from the Sea of Okhotsk in the north toward the East China Sea, Philippine Sea, and Taiwan in the south. Japan is a part of the Ring of Fire, and spans Japanese archipelago, an archipelago of List of islands of Japan, 6852 islands covering ; the five main islands are Hokkaido, Honshu (the "mainland"), Shikoku, Kyushu, and Okinawa Island, Okinawa. Tokyo is the Capital of Japan, nation's capital and largest city, followed by Yokohama, Osaka, Nagoya, Sapporo, Fukuoka, Kobe, and Kyoto. Japan is the List of countries and dependencies by population, eleventh most populous country in the world, as well as one of the List of countries and dependencies by population density, most densely populated and Urbanization by country, urbanized. About three-fourths of Geography of Japan, the c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ogasawara Islands
The Bonin Islands, also known as the , are an archipelago of over 30 subtropical and tropical islands, some directly south of Tokyo, Japan and northwest of Guam. The name "Bonin Islands" comes from the Japanese word ''bunin'' (an archaic reading of ''mujin''), meaning "no people" or "list of uninhabited regions, uninhabited". The only inhabited islands of the group are Chichijima (), the seat of the municipal government, and Hahajima (). Archeological evidence has revealed that some of the islands may have been prehistorically inhabited by members of an unknown Micronesian ethnicity. Ogasawara, Tokyo, Ogasawara Municipality (''mura'') and Ogasawara Subprefecture take their names from the Ogasawara Group. The is also used as a wider collective term that includes other islands in Ogasawara Municipality, such as the Volcano Islands, along with three other remote islands (Nishinoshima (Ogasawara), Nishinoshima, Minamitorishima, and Okinotorishima). Geographically speaking, all o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
South Iwo Jima
, native_name_link = , image_caption = Minami-Iōtō , image_size = , pushpin_map = Japan complete , pushpin_label = South Iwo Jima , pushpin_label_position = , pushpin_map_alt = , pushpin_relief = , pushpin_map_caption = , map_custom = , nickname = , location = Pacific Ocean , coordinates = , archipelago = Volcano Islands , total_islands = , major_islands = , area_km2 = 3.54 , length_km = , width_km = , coastline_km = 7.5 , highest_mount = , elevation_m = 916 , country = Japan , country_admin_divisions_title = Prefecture , country_admin_divisions = Tokyo , country_admin_divisions_title_1 = Subprefecture , country_admin_divisions_1 = Ogasawara Subprefecture , country_admin_divisions_title_2 = Village , country_admin_divisions_2 = Ogasawara , population = 0 , populati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Saipan
Saipan ( ch, Sa’ipan, cal, Seipél, formerly in es, Saipán, and in ja, 彩帆島, Saipan-tō) is the largest island of the Northern Mariana Islands, a Commonwealth (U.S. insular area), commonwealth of the United States in the western Pacific Ocean. According to 2020 estimates by the United States Census Bureau, the population of Saipan was 43,385, a decline of 10% from its 2010 count of 48,220. The legislative and executive branches of Commonwealth government are located in the village of Capitol Hill, Saipan, Capitol Hill on the island while the judicial branch is headquartered in the village of Susupe. Since the entire island is organized as a single municipality, most publications designate Saipan as the Commonwealth's capital. As of 2015, Saipan's mayor is David M. Apatang and the governor of the Northern Mariana Islands is Ralph Torres. History Prehistory Traces of human settlements on Saipan have been found by archaeologists ranging over 4,000 years, includ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Maug Islands
Maug (from the Chamorro name for the islands, Ma'ok, meaning "steadfast" or "everlasting") consists of a group of three small uninhabited islands. This island group is part of the Northern Islands Municipality of the Commonwealth of the Northern Mariana Islands, itself part of the Marianas archipelago in the Oceanian sub-region of Micronesia. Geography The Maug Islands lie about south of Farallon de Pajaros and north of Asuncion. The archipelago consists of three islands, the eroded exposed outer rim of a submerged volcano with a caldera with a diameter of approximately . The floor of the caldera is around below sea level, and in the middle is a mountain whose summit is only below sea level. The total area of the islands combined is , and the highest point is above sea level. About northwest of the Maug Islands is Supply Reef, a submarine volcano whose summit is below sea level. The Maug Islands and the Supply Reef are part of the same volcanic massif, and are connected ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
