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Waldseemüller Rock
Waldseemüller Rock (, ) is the rock off the south extremity of Snow Island in the South Shetland Islands, Antarctica; it is 136 m long in the west-east direction and 53 m wide, with a surface area of 0.48 ha. The vicinity was visited by early 19th-century sealers.L. IvanovGeneral Geography and History of Livingston Island.In: ''Bulgarian Antarctic Research: A Synthesis''. Eds. C. Pimpirev and N. Chipev. Sofia: St. Kliment Ohridski University Press, 2015. pp. 17–28 The feature is named after Martin Waldseemüller (''circa'' 1470-1520), a German cartographer and topographer who created an early forerunner of the theodolite, in association with other names in the area deriving from the early development or use of geodetic instruments and methods. Location Waldseemüller Rock is located at ,Bulgarian Antarctic Gazetteer. Antarctic Place ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Antarctica
Antarctica () is Earth's southernmost and least-populated continent. Situated almost entirely south of the Antarctic Circle and surrounded by the Southern Ocean (also known as the Antarctic Ocean), it contains the geographic South Pole. Antarctica is the fifth-largest continent, being about 40% larger than Europe, and has an area of . Most of Antarctica is covered by the Antarctic ice sheet, with an average thickness of . Antarctica is, on average, the coldest, driest, and windiest of the continents, and it has the highest average elevation. It is mainly a polar desert, with annual Climate of Antarctica#Precipitation, precipitation of over along the coast and far less inland. About 70% of the world's freshwater reserves are frozen in Antarctica, which, if melted, would raise global sea levels by almost . Antarctica holds the record for the Lowest temperature recorded on Earth, lowest measured temperature on Earth, . The coastal regions can reach temperatures over in the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
South Shetland Islands
The South Shetland Islands are a group of List of Antarctic and subantarctic islands, Antarctic islands located in the Drake Passage with a total area of . They lie about north of the Antarctic Peninsula, and between southwest of the nearest point of the South Orkney Islands. By the Antarctic Treaty System, Antarctic Treaty of 1959, the islands' sovereignty is neither recognized nor disputed by the signatories. According to British government language on the topic, "the whole of Antarctica is protected in the interests of peace and science." The islands have been claimed by three countries, beginning with the United Kingdom since 1908 (since 1962 as part of the equally unrecognized British Antarctic Territory). The islands are also claimed by the governments of Chile (since 1940, as part of the Antártica Chilena province), and by Argentina (since 1943, as part of Argentine Antarctica, Tierra del Fuego Province, Argentina, Tierra del Fuego Province). Several countries ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Antarctic Treaty System
The Antarctic Treaty and related agreements, collectively known as the Antarctic Treaty System (ATS), regulate international relations with respect to Antarctica, Earth's only continent without a native human population. It was the first arms control agreement established during the Cold War, designating the continent as a scientific preserve, establishing freedom of scientific investigation, and banning Military activity in the Antarctic, military activity; for the purposes of the treaty system, Antarctica is defined as all the land and ice shelf, ice shelves south of 60th parallel south, 60°S latitude. Since September 2004, the Antarctic Treaty Secretariat, which implements the treaty system, is headquartered in Buenos Aires, Argentina. The main treaty was opened for signature on 1 December 1959, and officially coming into force, entered into force on 23 June 1961. The original signatories were the 12 countries active in Antarctica during the International Geophysical Year ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Snow Island (South Shetland Islands)
Snow Island or Isla Nevada is a completely ice-covered island An island or isle is a piece of land, distinct from a continent, completely surrounded by water. There are continental islands, which were formed by being split from a continent by plate tectonics, and oceanic islands, which have never been ..., in size, lying southwest of Livingston Island in the South Shetland Islands. Surface area is .L.L. IvanovAntarctica: Livingston Island and Greenwich, Robert, Snow and Smith Islands Scale 1:120000 topographic map. Troyan: Manfred Wörner Foundation, 2009. This island was known to both American and British sealers as early as 1820, and the name has been well established in international usage for over 100 years. Maps Chart of South Shetland including Coronation Island, &c.from the exploration of the sloop Dove in the years 1821 and 1822 by George Powell Commander of the same. Scale ca. 1:200000. London: Laurie, 1822 See also * Composite Antarctic Gazetteer * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Seal Hunting
Seal hunting, or sealing, is the personal or commercial hunting of Pinniped, seals. Seal hunting is currently practiced in nine countries: Canada, Denmark (in self-governing Greenland only), Russia, the United States (above the Arctic Circle in Alaska), Namibia, Estonia, Norway, Finland and Sweden. Most of the world's seal hunting takes place in Canada and Greenland. The Canadian Fisheries and Oceans Canada, Department of Fisheries and Oceans (DFO) regulates the seal hunt in Canada. It sets quotas (total allowable catch – TAC), monitors the hunt, studies the seal population, works with the Canadian Sealers' Association to train sealers on new regulations, and promotes sealing through its website and spokespeople. The DFO set harvest quotas of over 90,000 seals in 2007; 275,000 in 2008; 280,000 in 2009; and 330,000 in 2010. The actual kills in recent years have been less than the quotas: 82,800 in 2007; 217,800 in 2008; 72,400 in 2009; and 67,000 in 2010. In 2007, Norway repo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Martin Waldseemüller
Martin Waldseemüller ( – 16 March 1520) was a German cartographer and humanist scholar. Sometimes known by the Hellenized form of his name, Hylacomylus, his work was influential among contemporary cartographers. His collaborator Matthias Ringmann and he are credited with the first recorded usage of the word ''America'' to name a portion of the New World in honour of Italian explorer Amerigo Vespucci, coming from the Old High German name Emmerich, in a world map they delineated in 1507. The same map also first showed the Pacific Ocean, separating the Americas from Asia. Waldseemüller was also the first to map South America as a continent separate from Asia, the first to produce a printed globe, and the first to create a printed wall map of Europe. A set of his maps printed as an appendix to the 1513 edition of Ptolemy's ''Geography'' is considered to be the first example of a modern atlas. Life and works Details of Waldseemüller's life are scarce. He was born around 1470 in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Theodolite
A theodolite () is a precision optical instrument for measuring angles between designated visible points in the horizontal and vertical planes. The traditional use has been for land surveying, but it is also used extensively for building and infrastructure construction, and some specialized applications such as meteorology and rocket launching. It consists of a moveable telescope mounted so it can rotate around horizontal and vertical axes and provide angular readouts. These indicate the orientation of the telescope, and are used to relate the first point sighted through the telescope to subsequent sightings of other points from the same theodolite position. These angles can be measured with accuracies down to microradians or seconds of arc. From these readings a plan can be drawn, or objects can be positioned in accordance with an existing plan. The modern theodolite has evolved into what is known as a total station where angles and distances are measured electronicall ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geodesy
Geodesy or geodetics is the science of measuring and representing the Figure of the Earth, geometry, Gravity of Earth, gravity, and Earth's rotation, spatial orientation of the Earth in Relative change, temporally varying Three-dimensional space, 3D. It is called planetary geodesy when studying other astronomical body, astronomical bodies, such as planets or Natural satellite, circumplanetary systems. Geodynamics, Geodynamical phenomena, including crust (geology), crustal motion, tides, and polar motion, can be studied by designing global and national Geodetic control network, control networks, applying space geodesy and terrestrial geodetic techniques, and relying on Geodetic datum, datums and coordinate systems. Geodetic job titles include geodesist and geodetic surveyor. History Geodesy began in pre-scientific Classical antiquity, antiquity, so the very word geodesy comes from the Ancient Greek word or ''geodaisia'' (literally, "division of Earth"). Early ideas about t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cape Conway
Cape Conway is the rounded low and ice-free tipped cape forming the south extremity of Snow Island in the South Shetland Islands, Antarctica. It is a south entrance point for Boyd Strait. ''Tooth Rock'' () rising to and lying to the south is the largest in a group of rocks extending from the cape. The area was visited by 19th century sealers. Cape Conway was charted in 1829 by the British naval expedition under Captain Henry Foster and named after HMS Conway in which Foster had previously served. Tooth Rock was descriptively named following a survey from ''RRS John Biscoe'' in 1951–52. Location The cape is located at which is south-southeast of Byewater Point, southwest of President Head, southwest of Hall Peninsula and east by north of Cape Smith, Smith Island (British mapping in 1821–22, 1935, 1951-51 and 1968, Argentine in 1946, Chilean in 1974, and Bulgarian in 2009). See also * Composite Antarctic Gazetteer * List of Antarctic islands south of 60 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Antarctic And Subantarctic Islands
This is a list of Antarctic and sub-Antarctic islands. * Antarctic islands are, in the strict sense, the islands around mainland Antarctica, situated on the Antarctic Plate, and south of the Antarctic Convergence. According to the terms of the Antarctic Treaty System, Antarctic Treaty, claims to sovereignty over lands south of 60th parallel south, 60° S are not asserted.Antarctic Treaty, Article VI Dec. 1, 1959 12 UST 794; 402 UNTS 71; 19 ILM 860 (1980) * Sub-Antarctic islands are the islands situated closer to another continental mainland or on another list of tectonic plates, tectonic plate, but are biogeography, biogeographically linked to the Antarctic or being parts of the Antarctic realm, roughly north of and adjacent to the Antarctic Convergence. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
