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Vulcan (volcano)
Vulcan is a pumice cone in Papua New Guinea. It is a sub-vent of the Rabaul caldera and lies on its western rim. Its most recent eruption was in 1994, when it and another vent, Tavurvur, forced the city of Rabaul to be temporarily abandoned and the local administrative centres of East New Britain Province to be moved to a new capital, Kokopo Kokopo is the capital of East New Britain Province in Papua New Guinea. It is administered under Kokopo-Vunamami Urban LLG. The capital was moved from Rabaul in 1994 when the volcanoes Tavurvur and Vulcan erupted. As a result, the population of .... Today, the slopes of Vulcan are now forested, as a result of dormancy since 1994. Vulcan did not exist during the German colonial times, although the agronomist for the New Guinea Company, Richard Parkinson, noticed that a small island in the harbour in 1880 had grown noticeably larger by 1900. During the 1920s the island offered enough new land for Australian colonials to open a sporting cl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Albuquerque
Albuquerque ( ; ), ; kee, Arawageeki; tow, Vakêêke; zun, Alo:ke:k'ya; apj, Gołgéeki'yé. abbreviated ABQ, is the most populous city in the U.S. state of New Mexico. Its nicknames, The Duke City and Burque, both reference its founding in 1706 as ''La Villa de Alburquerque'' by Nuevo México governor Francisco Cuervo y Valdés''.'' Named in honor of the Viceroy of New Spain, the 10th Duke of Alburquerque, the city was an outpost on El Camino Real linking Mexico City to the northernmost territories of New Spain. Located in the Albuquerque Basin, the city is flanked by the Sandia Mountains to the east and the West Mesa to the west, with the Rio Grande and bosque flowing from north-to-south. According to the 2020 census, Albuquerque had 564,559 residents, making it the 32nd-most populous city in the United States and the fourth largest in the Southwest. It is the principal city of the Albuquerque metropolitan area, which had 916,528 residents as of July 2020, an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
East New Britain
East New Britain is a province of Papua New Guinea, consisting of the north-eastern part of the island of New Britain and the Duke of York Islands. The capital of the province is Kokopo, not far from the old capital of Rabaul, which was largely destroyed in a volcanic eruption in 1994. East New Britain covers a total land area of , and the province's population was reported as 220,133 in the 2000 census, rising to 328,369 in the 2011 count. Provincial coastal waters extend over an area of . The province's only land border is with West New Britain Province to the west, and it also shares a maritime border with New Ireland Province to the east. East New Britain has a dual economy: a cash economy operates side by side with the subsistence-farming sector. The main crops produced for export are cocoa and copra. Tourism continues to be an increasingly important sector of the provincial economy. Languages There are sixteen Austronesian languages spoken in the province, of which Kuanua, s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Papua New Guinea
Papua New Guinea (abbreviated PNG; , ; tpi, Papua Niugini; ho, Papua Niu Gini), officially the Independent State of Papua New Guinea ( tpi, Independen Stet bilong Papua Niugini; ho, Independen Stet bilong Papua Niu Gini), is a country in Oceania that comprises the eastern half of the island of New Guinea and its offshore islands in Melanesia (a region of the southwestern Pacific Ocean north of Australia). Its capital, located along its southeastern coast, is Port Moresby. The country is the world's third largest island country, with an area of . At the national level, after being ruled by three external powers since 1884, including nearly 60 years of Australian administration starting during World War I, Papua New Guinea established its sovereignty in 1975. It became an independent Commonwealth realm in 1975 with Elizabeth II as its queen. It also became a member of the Commonwealth of Nations in its own right. There are 839 known languages of Papua New Guinea, one of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Volcanic Cone
Volcanic cones are among the simplest volcanic landforms. They are built by ejecta from a volcanic vent, piling up around the vent in the shape of a cone with a central crater. Volcanic cones are of different types, depending upon the nature and size of the fragments ejected during the eruption. Types of volcanic cones include stratocones, spatter cones, tuff cones, and cinder cones. Stratocone Stratocones are large cone-shaped volcanoes made up of lava flows, explosively erupted pyroclastic rocks, and igneous intrusives that are typically centered around a cylindrical vent. Unlike shield volcanoes, they are characterized by a steep profile and periodic, often alternating, explosive eruptions and effusive eruptions. Some have collapsed craters called calderas. The central core of a stratocone is commonly dominated by a central core of intrusive rocks that range from around to over several kilometers in diameter. This central core is surrounded by multiple generations of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rabaul Caldera
The Rabaul caldera, or Rabaul Volcano, is a large volcano on the tip of the Gazelle Peninsula in East New Britain, Papua New Guinea, and derives its name from the town of Rabaul inside the caldera. The caldera has many sub-vents, Tavurvur being the most well known for its devastating eruptions over Rabaul. The outer flanks of the highest peak, a 688-metre-high asymmetrical pyroclastic shield, are formed by thick pyroclastic flow deposits. There is no sign of a pyroclastic shield along the rim of the caldera, making the location likely underwater, on the caldera's floor. Tavurvur, a stratovolcano and a sub-vent of the caldera, is the most visibly active, continuously throwing ash. In 1994 it, and nearby Vulcan, erupted and devastated Rabaul; however, due to planning for such a catastrophe, the townsfolk were prepared and only five people were killed. One of the deaths was caused by lightning, a feature of volcanic ash clouds. In 1937, Vulcan and Tavurvur erupted simultaneously, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pumice Cone
Volcanic cones are among the simplest volcanic landforms. They are built by ejecta from a volcanic vent, piling up around the vent in the shape of a cone with a central crater. Volcanic cones are of different types, depending upon the nature and size of the fragments ejected during the eruption. Types of volcanic cones include stratocones, spatter cones, tuff cones, and cinder cones. Stratocone Stratocones are large cone-shaped volcanoes made up of lava flows, explosively erupted pyroclastic rocks, and igneous intrusives that are typically centered around a cylindrical vent. Unlike shield volcanoes, they are characterized by a steep profile and periodic, often alternating, explosive eruptions and effusive eruptions. Some have collapsed craters called calderas. The central core of a stratocone is commonly dominated by a central core of intrusive rocks that range from around to over several kilometers in diameter. This central core is surrounded by multiple generations o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tavurvur
Tavurvur is an active stratovolcano near Rabaul, on the island of New Britain, in Papua New Guinea. It is a sub-vent of the Rabaul caldera and lies on the eastern rim of the larger feature. An eruption of the volcano largely destroyed the nearby town of Rabaul in 1994. Mount Tavurvur is the most active volcano in Rabaul caldera, and erupted most recently on 29 August 2014. The correct pronunciation of the volcano's name is tah-VOOR-voor, according to the Rabaul Volcanological Observatory. History Gallery File:NASA RabaulVolcano PIA01767.jpg, Space Radar Image of Rabaul Volcano File:Tavurvur.png, Tavurvur from Low Earth orbit A low Earth orbit (LEO) is an orbit around Earth with a period of 128 minutes or less (making at least 11.25 orbits per day) and an eccentricity less than 0.25. Most of the artificial objects in outer space are in LEO, with an altitude never mor ... File:Tavurvur volcano edit.jpg, Tavurvur's 2009 eruption File:Ash Plume from Tavurvur, Papua New Gu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rabaul
Rabaul () is a township in the East New Britain province of Papua New Guinea, on the island of New Britain. It lies about 600 kilometres to the east of the island of New Guinea. Rabaul was the provincial capital and most important settlement in the province until it was destroyed in 1994 by falling ash from a volcanic eruption in its harbour. During the eruption, ash was sent thousands of metres into the air, and the subsequent rain of ash caused 80% of the buildings in Rabaul to collapse. After the eruption the capital was moved to Kokopo, about away. Rabaul is continually threatened by volcanic activity, because it is on the edge of the Rabaul caldera, a flooded caldera of a large pyroclastic shield. Rabaul was planned and built around the harbour area known as Simpsonhafen (Simpson Harbour) during the German New Guinea administration, which controlled the region between 1884 and formally through 1919. Rabaul was selected as the capital of the German New Guinea administratio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
East New Britain Province
East New Britain is a province of Papua New Guinea, consisting of the north-eastern part of the island of New Britain and the Duke of York Islands. The capital of the province is Kokopo, not far from the old capital of Rabaul, which was largely destroyed in a volcanic eruption in 1994. East New Britain covers a total land area of , and the province's population was reported as 220,133 in the 2000 census, rising to 328,369 in the 2011 count. Provincial coastal waters extend over an area of . The province's only land border is with West New Britain Province to the west, and it also shares a maritime border with New Ireland Province to the east. East New Britain has a dual economy: a cash economy operates side by side with the subsistence-farming sector. The main crops produced for export are cocoa and copra. Tourism continues to be an increasingly important sector of the provincial economy. Languages There are sixteen Austronesian languages spoken in the province, of which Kuanua, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kokopo
Kokopo is the capital of East New Britain Province in Papua New Guinea. It is administered under Kokopo-Vunamami Urban LLG. The capital was moved from Rabaul in 1994 when the volcanoes Tavurvur and Vulcan erupted. As a result, the population of the town increased more than sixfold from 3,150 in 1990 to 20,262 in 2000. Kokopo was known as Herbertshöhe (''Herbert's Heights''), named in honour of Herbert, eldest son of German Chancellor Otto von Bismarck, during the German New Guinea administration, which controlled the area between 1884 and formally until 1919. Until 1910, it was the capital of German New Guinea. On Sunday, March 29, 2015, a strong earthquake, of a preliminary magnitude of at least 7.5, which at that time was the largest earthquake of 2015, was recorded near Kokopo, and a tsunami warning was issued. This was surpassed a month later by the April 2015 Nepal earthquake, which measured a magnitude 7.8. In 2015, a research and conservation project was suggested to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cinder Cones
A cinder cone (or scoria cone) is a steep conical hill of loose pyroclastic fragments, such as volcanic clinkers, volcanic ash, or scoria that has been built around a volcanic vent. The pyroclastic fragments are formed by explosive eruptions or lava fountains from a single, typically cylindrical, vent. As the gas-charged lava is blown violently into the air, it breaks into small fragments that solidify and fall as either cinders, clinkers, or scoria around the vent to form a cone that often is symmetrical; with slopes between 30 and 40°; and a nearly circular ground plan. Most cinder cones have a bowl-shaped crater at the summit. Mechanics of eruption Cinder cones range in size from tens to hundreds of meters tall and often have a bowl-shaped crater at the summit. They are composed of loose pyroclastic material (cinder or scoria), which distinguishes them from ''spatter cones'', which are composed of agglomerated volcanic bombs. The pyroclastic material making up a cinder ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Subduction Volcanoes
Subduction is a geological process in which the oceanic lithosphere is recycled into the Earth's mantle at convergent boundaries. Where the oceanic lithosphere of a tectonic plate converges with the less dense lithosphere of a second plate, the heavier plate dives beneath the second plate and sinks into the mantle. A region where this process occurs is known as a subduction zone, and its surface expression is known as an arc-trench complex. The process of subduction has created most of the Earth's continental crust. Rates of subduction are typically measured in centimeters per year, with the average rate of convergence being approximately two to eight centimeters per year along most plate boundaries. Subduction is possible because the cold oceanic lithosphere is slightly denser than the underlying asthenosphere, the hot, ductile layer in the upper mantle underlying the cold, rigid lithosphere. Once initiated, stable subduction is driven mostly by the negative buoyancy of the de ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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