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Queen Mary's Peak
Queen Mary's Peak is the summit of the island of Tristan da Cunha, in the South Atlantic Ocean. It has an elevation of 2,062 metres (6,765 ft) above sea level. It is named after Mary of Teck, the Queen consort of King George V. It is the highest point of the British overseas territory of Saint Helena, Ascension and Tristan da Cunha, and the highest point of any British territory with a permanent population. Queen Mary's Peak is ranked 17th by topographic isolation. Outline The mountain is the peak of the massive shield volcano which forms the island. A wide summit crater caps the peak, and it contains a heart-shaped crater lake. This lake is normally frozen during the winter, and the upper slopes of the volcano are covered in snow. The first observed eruption began on 10 October 1961 from a vent on the north shore of the island and continued into March 1962. The entire population of the island (264) had to be evacuated and did not return until 1963. There was an eruption ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ultra-prominent Peak
An ultra-prominent peak, or ultra for short, is a mountain summit with a topographic prominence of or more; it is also called a P1500. The prominence of a peak is the minimum height of climb to the summit on any route from a higher peak, or from sea level if there is no higher peak. There are approximately 1,500 such peaks on Earth. Some well-known peaks, such as the Matterhorn and Eiger, are not ultras because they are connected to higher mountains by high cols and thus do not achieve enough topographic prominence. The term "ultra" originated with earth scientist Steve Fry, from his studies of the prominence of peaks in Washington in the 1980s. His original term was "ultra major mountain", referring to peaks with at least of prominence. Distribution Currently, over 1,500 ultras have been identified above sea level: 654 in Asia, 357 in North America, 209 in South America, 119 in Europe (including 12 in the Caucasus), 84 in Africa, 54 in Oceania, and 39 in Antarctica. Man ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Volcanic Crater Lake
A volcanic crater lake is a lake in a volcanic crater, crater that was formed by explosive eruption, explosive activity or a caldera, collapse during a types of volcanic eruptions, volcanic eruption. Formation Lakes in calderas fill large craters formed by the collapse of a volcano during an eruption. Lakes in maars fill medium-sized craters where an eruption deposited debris around a vent. Crater lakes form as the created depression, within the Rim (craters), crater rim, is filled by water. The water may come from Precipitation (meteorology), precipitation, groundwater circulation (often Hot Spring, hydrothermal fluids in the case of volcanic craters) or melted ice. Its level rises until an equilibrium is reached between the rates of incoming and outgoing water. Sources of water loss singly or together may include evaporation, subsurface seepage, and, in places, surface leakage or overflow when the lake level reaches the lowest point on its rim. At such a saddle location, the u ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Volcanoes Of Tristan Da Cunha
A volcano is commonly defined as a vent or fissure 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 because most of Earth's plate boundaries are underwater, most volcanoes 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 resulting from divergent tectonic activity are usually non-explosive whereas those resulting from convergent tectonic activity cause violent eruptions."Mid-ocean ridge tectonics, volcanism and geomorphology." Geology 26, no. 455 (2001): 458. https://macdonald.faculty.geol.ucsb.edu/papers/Macdonald%20Mid-Ocean%20Ridge%20Tectonics.pdf Volcanoes can also form where there is stretching an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Volcanoes In Tristan Da Cunha
Tristan da Cunha (), colloquially Tristan, is a remote group of volcano, volcanic islands in the South Atlantic Ocean. It is one of three constituent parts of the British Overseas Territories, British Overseas Territory of Saint Helena, Ascension and Tristan da Cunha, with its own constitution. The territory consists of the inhabited island Tristan da Cunha, which has a diameter of roughly and an area of ; the wildlife reserves of Gough Island and Inaccessible Island; and the smaller, uninhabited Nightingale Islands. , the main island had 250 permanent inhabitants, who all carry British Overseas Territories citizenship. The other islands are uninhabited, except for the South African personnel of a weather station on Gough Island. As there is no airstrip on the island, the only way of travelling to or from Tristan is by ship. There are six-day journeys from Cape Town, South Africa, and some cruises offered departing from Ushuaia, Argentina. History Discovery The islan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Mountains And Hills Of Saint Helena, Ascension And Tristan Da Cunha
This is a list of mountains and hills in Saint Helena, Ascension, and Tristan da Cunha, the British Overseas Territory, listed by height. List of mountains and hills Over 1000m 750m to 1000m 500m to 750m 250m to 500m 50m to 250m Other hills and hill features ''NB: Many of these hills and features are over 200m.'' Maps File:Topographic map of Saint Helena-en.svg, Topographic map of Saint Helena File:Ile de l'ascension routes.svg, Topographic map of Ascension Island File:Tristan Map.png, The Tristan da Cunha archipelago File:Gough Island map.svg, Relief map of Gough Island File:Gough Island Landsat.jpg, Satellite map of Gough Island See also * Geography of Saint Helena * Geography of Tristan da Cunha External linksGoogleTerrain map of St Helena SourcesGizimap.hu: St Helena & Dependencies (2011) [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geography Of Tristan Da Cunha
Tristan da Cunha is an archipelago of five islands in the southern Atlantic Ocean, the largest of which is the island of Tristan da Cunha itself and the second-largest, the remote bird haven, Gough Island. It forms part of a wider territory called Saint Helena, Ascension and Tristan da Cunha which includes Saint Helena and Ascension Island. Location and description This archipelago, 1500 miles (2500 km) from the continents of Africa and South America, is one of the most remote inhabited places on earth. It consists of the following islands: * the main island Tristan da Cunha and its surrounding islands ** Tristan da Cunha, the main island and largest () area: ** Inaccessible Island area: ** Nightingale Islands area: *** Nightingale Island area: *** Middle Island, Tristan da Cunha, Middle Island area: *** Stoltenhoff Island area: * Gough Island (''Diego Alvarez'') area: important as the largest undisturbed cool-temperate island habitat in the South Atlantic Ocean. Th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
New Zealand
New Zealand () is an island country in the southwestern Pacific Ocean. It consists of two main landmasses—the North Island () and the South Island ()—and List of islands of New Zealand, over 600 smaller islands. It is the List of island countries, sixth-largest island country by area and lies east of Australia across the Tasman Sea and south of the islands of New Caledonia, Fiji, and Tonga. The Geography of New Zealand, country's varied topography and sharp mountain peaks, including the Southern Alps (), owe much to tectonic uplift and volcanic eruptions. Capital of New Zealand, New Zealand's capital city is Wellington, and its most populous city is Auckland. The islands of New Zealand were the last large habitable land to be settled by humans. Between about 1280 and 1350, Polynesians began to settle in the islands and subsequently developed a distinctive Māori culture. In 1642, the Dutch explorer Abel Tasman became the first European to sight and record New Zealand. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Knitwear
Knitted fabric is a textile that results from knitting, the process of inter-looping of yarns or inter-meshing of loops. Its properties are distinct from woven fabric in that it is more flexible and can be more readily constructed into smaller pieces, making it ideal for socks and hats. Weft-knit and warp-knit fabric There are two basic varieties of knit fabric: weft-knit and warp-knit fabric. Warp-knitted fabrics such as tricot and milanese are resistant to runs, and are commonly used in lingerie. Weft-knit fabrics are easier to make and more common. When cut, they will unravel (run) unless repaired. Warp-knit fabrics are resistant to runs and relatively easy to sew. Raschel lace—the most common type of machine made lace—is a warp knit fabric but using many more guide-bars (12+) than the usual machines which mostly have three or four bars. (14+) Structure of knitted fabrics Courses and wales In weaving, threads are always straight, running parallel either length ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Louis-Marie Aubert Du Petit-Thouars
Louis-Marie Aubert du Petit-Thouars (5 November 1758, Saint-Martin-de-la-Place, Bournois – 12 May 1831, Paris) was a French botanist known for his work collecting and describing orchids from the three islands of Madagascar, Mauritius and Réunion. Introduction Petit-Thouars came from an aristocratic family of the region of Duchy of Anjou, Anjou, where he grew up in the castle of Boumois, near Saumur. In 1792, after an imprisonment of two years during the French Revolution, he was exiled to Madagascar and the nearby islands such as La Réunion (then called Bourbon). He started collecting many plant specimens on Madagascar, Mauritius and La Réunion. Ten years later he was able to return to France with a collection of about 2000 plants. Most of his collection went to the ''Muséum de Paris'', while some species ended up at Royal_Botanic_Gardens,_Kew , Kew. He was elected member of the prestigious ''Académie des Sciences'' on 10 April 1820. Du Petit-Thouars is remembered ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Naturalist
Natural history is a domain of inquiry involving organisms, including animals, fungi, and plants, in their natural environment, leaning more towards observational than experimental methods of study. A person who studies natural history is called a naturalist or natural historian. Natural history encompasses scientific research but is not limited to it. It involves the systematic study of any category of natural objects or organisms, so while it dates from studies in the ancient Greco-Roman world and the mediaeval Arabic world, through to European Renaissance naturalists working in near isolation, today's natural history is a cross-discipline umbrella of many specialty sciences; e.g., geobiology has a strong multidisciplinary nature. Definitions Before 1900 The meaning of the English term "natural history" (a calque of the Latin ''historia naturalis'') has narrowed progressively with time, while, by contrast, the meaning of the related term "nature" has widened (see also ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
French People
French people () are a nation primarily located in Western Europe that share a common Culture of France, French culture, History of France, history, and French language, language, identified with the country of France. The French people, especially the native speakers of langues d'oïl from northern and central France, are primarily descended from Roman people, Romans (or Gallo-Romans, western European Celts, Celtic and Italic peoples), Gauls (including the Belgae), as well as Germanic peoples such as the Franks, the Visigoths, the Suebi and the Burgundians who settled in Gaul from east of the Rhine after the fall of the Roman Empire, as well as various later waves of lower-level irregular migration that have continued to the present day. The Norsemen also settled in Normandy in the 10th century and contributed significantly to the ancestry of the Normans. Furthermore, regional ethnic minorities also exist within France that have distinct lineages, languages and cultures such ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ellen MacArthur
Dame Ellen Patricia MacArthur (born 8 July 1976) is an English retired sailor and charity founder. MacArthur is a successful solo long-distance yachtswoman – on 7 February 2005, she broke the world record for the fastest solo circumnavigation of the globe, a feat which gained her international renown. Francis Joyon, the Frenchman who had held the record before MacArthur, was able to recover the record again in early 2008. Following her retirement from professional sailing on 2 September 2010, MacArthur announced the launch of the Ellen MacArthur Foundation, a charity that works with business and education to accelerate the transition to a circular economy. She once held the top spot on the UK ''Top Gear'' show for fastest star in a reasonably priced car. Early life MacArthur was born in Whatstandwell near Matlock in Derbyshire where she lived with her parents, who were both teachers, and two brothers Fergus, still in Whatstandwell, and Lewis, who now lives in Penn ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
