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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 area: *** Stoltenhoff Island area: * Gough Island (''Diego Alvarez'') area: important as the largest undisturbed cool-temperate island habitat in the South Atlantic Ocean. The main island is quite mountainous ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tristan Map
Tristan (Latin/ Brythonic: ''Drustanus''; cy, Trystan), also known as Tristram or Tristain and similar names, is the hero of the legend of Tristan and Iseult. In the legend, he is tasked with escorting the Irish princess Iseult to wed Tristan's uncle, King Mark of Cornwall. Tristan and Iseult accidentally drink a love potion during the journey and fall in love, beginning an adulterous relationship that eventually leads to Tristan's banishment and death. The character's first recorded appearance is in retellings of British mythology from the 12th century by Thomas of Britain and Gottfried von Strassburg, and later in the Prose ''Tristan''. He is featured in Arthurian legends, including the seminal text ''Le Morte d'Arthur'', as a skilled knight and a friend of Lancelot. The historical roots of Tristan are unclear; his association with Cornwall may originate from the Tristan Stone, a 6th-century granite pillar in Cornwall inscribed with the name ''Drustanus'' (a variant ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 of any British overseas territory with a permanent population. 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 only recorded 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 before it during the early 18th century on the main peak on Trista ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Subantarctic Fur Seal
The subantarctic fur seal (''Arctocephalus tropicalis'') is found in the southern parts of the Indian, Pacific, and Atlantic Oceans. It was first described by Gray in 1872 from a specimen recovered in northern Australia—hence the inappropriate specific name ''tropicalis''. Description The subantarctic fur seal is medium in size compared with other fur seals. Males grow to 2m and 160 kg, whereas females are substantially smaller—1.4m and 50 kg. Both sexes are strongly sexually dimorphic, with creamy-orange chests and faces. Their bellies are more brownish. Males have a dark grey to black back, while females are a lighter grey. Pups are black at birth, but molt at about 3 months old. The snout is short and flat, and the flippers are short and broad. Subantarctic fur seals live for about 20–25 years. Distribution Subantarctic fur seals are geographically widespread. As their name implies, they generally breed in more northerly locations than the Antarctic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nertera Depressa
''Nertera granadensis'', also known as coral bead plant, pin-cushion plant, coral moss, or English baby tears, is a ground cover with orange berries, of the genus '' Nertera''. ''Nertera granadensis'' has an unusually extensive transcontinental distribution surrounding the Pacific Ocean, occurring from southern Chile and western Argentina north to Guatemala, and in Hawaii, New Zealand, eastern Australia, Indonesia, Malaysia, Papua New Guinea, the Philippines and Taiwan. In the tropical regions of the western Pacific, ''Nertera granadensis'' only occurs at high altitudes. It does also occur on the Juan Fernández Islands. It is grown as an ornamental plant in gardens, and the name given to the plant in Mapudungun and Chilean Spanish Chilean Spanish ( es, español chileno) is any of several varieties of the Spanish language spoken in most of Chile. Chilean Spanish dialects have distinctive pronunciation, grammar, vocabulary, and slang usages that differ from those of Stand ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
New Zealand
New Zealand ( mi, Aotearoa ) is an island country in the southwestern Pacific Ocean. It consists of two main landmasses—the North Island () and the South Island ()—and over 700 smaller islands. It is the sixth-largest island country by area, covering . New Zealand is about east of Australia across the Tasman Sea and south of the islands of New Caledonia, Fiji, and Tonga. The country's varied topography and sharp mountain peaks, including the Southern Alps, owe much to tectonic uplift and volcanic eruptions. 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 then developed a distinctive Māori culture. In 1642, the Dutch explorer Abel Tasman became the first European to sight and record New Zealand. In 1840, representatives of the United Kingdom and Māori chiefs ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endemic Species
Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsewhere. For example, the Cape sugarbird is found exclusively in southwestern South Africa and is therefore said to be ''endemic'' to that particular part of the world. An endemic species can be also be referred to as an ''endemism'' or in scientific literature as an ''endemite''. For example '' Cytisus aeolicus'' is an endemite of the Italian flora. '' Adzharia renschi'' was once believed to be an endemite of the Caucasus, but it was later discovered to be a non-indigenous species from South America belonging to a different genus. The extreme opposite of an endemic species is one with a cosmopolitan distribution, having a global or widespread range. A rare alternative term for a species that is endemic is "precinctive", which applies to s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Moss
Mosses are small, non-vascular flowerless plants in the taxonomic division Bryophyta (, ) '' sensu stricto''. Bryophyta (''sensu lato'', Schimp. 1879) may also refer to the parent group bryophytes, which comprise liverworts, mosses, and hornworts. Mosses typically form dense green clumps or mats, often in damp or shady locations. The individual plants are usually composed of simple leaves that are generally only one cell thick, attached to a stem that may be branched or unbranched and has only a limited role in conducting water and nutrients. Although some species have conducting tissues, these are generally poorly developed and structurally different from similar tissue found in vascular plants. Mosses do not have seeds and after fertilisation develop sporophytes with unbranched stalks topped with single capsules containing spores. They are typically tall, though some species are much larger. ''Dawsonia'', the tallest moss in the world, can grow to in height. There are a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fern
A fern (Polypodiopsida or Polypodiophyta ) is a member of a group of vascular plants (plants with xylem and phloem) that reproduce via spores and have neither seeds nor flowers. The polypodiophytes include all living pteridophytes except the lycopods, and differ from mosses and other bryophytes by being vascular, i.e., having specialized tissues that conduct water and nutrients and in having life cycles in which the branched sporophyte is the dominant phase. Ferns have complex leaves called megaphylls, that are more complex than the microphylls of clubmosses. Most ferns are leptosporangiate ferns. They produce coiled fiddleheads that uncoil and expand into fronds. The group includes about 10,560 known extant species. Ferns are defined here in the broad sense, being all of the Polypodiopsida, comprising both the leptosporangiate (Polypodiidae) and eusporangiate ferns, the latter group including horsetails, whisk ferns, marattioid ferns, and ophioglossoid ferns. Ferns first ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gough Island Top View
Gough ( ) is a surname. The surname probably derives from the Welsh (English: "red"), given as a nickname to someone with red hair or a red complexion or as a reduced form of the Irish McGough which itself is an Anglicized form of Gaelic , a patronymic from the personal name (variant ), "horseman", both derivatives of Irish "horse". Notable people with the surname include: *Alfred Gough, American screenwriter and producer, co-creator of ''Smallville'' *Antony Gough, New Zealand businessman and property developer * Austin Gough, American football player *Bobby Gough (born 1949), English footballer *Charles Gough (other), a number of people * Charles Frederick Howard Gough (1901–1977), British Territorial Army officer, company director and politician * Charles John Stanley Gough, British soldier and recipient of the Victoria Cross *Darren Gough (born 1970), English cricketer and ballroom dancer *Denise Gough (born 1980), Irish actress * Doris Gough Boyd (1888–1960), A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Prevailing Wind
In meteorology, prevailing wind in a region of the Earth's surface is a surface wind that blows predominantly from a particular direction. The dominant winds are the trends in direction of wind with the highest speed over a particular point on the Earth's surface at any given time. A region's prevailing and dominant winds are the result of global patterns of movement in the Earth's atmosphere. In general, winds are predominantly easterly at low latitudes globally. In the mid-latitudes, westerly winds are dominant, and their strength is largely determined by the polar cyclone. In areas where winds tend to be light, the sea breeze/land breeze cycle is the most important cause of the prevailing wind; in areas which have variable terrain, mountain and valley breezes dominate the wind pattern. Highly elevated surfaces can induce a thermal low, which then augments the environmental wind flow. Wind roses are tools used to display the direction of the prevailing wind. Knowledge of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sandy Point, Tristan Da Cunha
Sandy Point is the easternmost extremity of the island of Tristan da Cunha in the South Atlantic Ocean. It is a distance of about 7 miles (12 km) by sea from the island's only settlement, Edinburgh of the Seven Seas. There is a beach of black volcanic sand fringed by low cliffs and a sloping plateau leading up to Tristan's mountainous interior. Its climate is warmer and drier than that of the Settlement, being in the lee of the island's prevailing winds. A farm was established in the 1950s, and although attempts to grow vegetables were abandoned, the pine plantation and fruit trees of apple, pear, plum and peach make the area unique. The grassy slopes above the cliffs are grazed by sheep and a herd of about 15 beef cattle. There is a colony of Northern rockhopper penguins (known on the island as ''pinnamins'') at the east end of Sandy Point. The penguins come onshore to breed between August and December, and again for moulting between January and March. Harvesting peng ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tristan Hotspot
The Tristan hotspot is a volcanic hotspot which is responsible for the volcanic activity which forms the volcanoes in the southern Atlantic Ocean. It is thought to have formed the island of Tristan da Cunha and the Walvis Ridge on the African Plate. Geology It is also believed to be closely connected with the Paraná and Etendeka flood basalt provinces, which formed over the hotspot during the opening of the South Atlantic Ocean. The Tristan and Gough hotspots are widely spaced end-members of the volcanic system that generated the Walvis Ridge on the African plate and the Rio Grande Rise on the South American plate beginning at when the Paraná and Etendeka traps formed. Whether or not Tristan and Gough represent two distinct volcanic centers is still debated. argued that the Walvis Ridge is not the product of a deep mantle plume or the Tristan hotspot, but that changes in the internal stress in the spreading African and South American plates trigger changes in the magmatic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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