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Digges Cove
Digges Cove ( bg, залив Дигс, zaliv Digges, ) is the 1.77 km wide cove indenting for 860 m the north coast of Elephant Island in the South Shetland Islands, Antarctica southeast of Eratosthenes Point. It was formed as a result of the retreat of Snellius Glacier in the late 20th century. The area was visited by early 19th century sealers.A. Gurney. ''Below the Convergence: Voyages Toward Antarctica, 1699-1839.'' New York: Penguin Books, 1998. 315 pp. The feature is named after Leonard Digges (c. 1515–1559), a British mathematician and surveyor, inventor of the theodolite; in association with other names in the area deriving from the early development or use of geodetic instruments and methods. Location Digges Cove is centred at ,Bulgarian Antarctic Gazetteer. Antarctic Place-names Commission which is 18 km east-southea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
South Shetland Islands Map
South is one of the cardinal directions or Points of the compass, compass points. The direction is the opposite of north and is perpendicular to both east and west. Etymology The word ''south'' comes from Old English ''sūþ'', from earlier Proto-Germanic language, Proto-Germanic ''*sunþaz'' ("south"), possibly related to the same Proto-Indo-European language, Proto-Indo-European root that the word ''sun'' derived from. Some languages describe south in the same way, from the fact that it is the direction of the sun at noon (in the Northern Hemisphere), like Latin meridies 'noon, south' (from medius 'middle' + dies 'day', cf English meridional), while others describe south as the right-hand side of the rising sun, like Biblical Hebrew תֵּימָן teiman 'south' from יָמִין yamin 'right', Aramaic תַּימנַא taymna from יָמִין yamin 'right' and Syriac ܬܰܝܡܢܳܐ taymna from ܝܰܡܝܺܢܳܐ yamina (hence the name of Yemen, the land to the south/right of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Elephant Island (map-en)
Elephant Island is an ice-covered, mountainous island off the coast of Antarctica in the outer reaches of the South Shetland Islands, in the Southern Ocean. The island is situated north-northeast of the tip of the Antarctic Peninsula, west-southwest of South Georgia, south of the Falkland Islands, and southeast of Cape Horn. It is within the Antarctic claims of Argentina, Chile and the United Kingdom. The Brazilian Antarctic Program maintains a shelter on the island, Goeldi, and formerly had another ( Wiltgen), which was dismantled in the summers of 1997 and 1998, supporting the work of up to six researchers each during the summer. Toponym Elephant Island's name is attributed to both its elephant head-like appearance and the sighting of elephant seals by Captain George Powell in 1821, one of the earliest sightings. However, in Russia it is still known under the name given by its discoverers in 1821 – Mordvinov Island. Geography Elephant Island marks the western end o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Elephant Island
Elephant Island is an ice-covered, mountainous island off the coast of Antarctica in the outer reaches of the South Shetland Islands, in the Southern Ocean. The island is situated north-northeast of the tip of the Antarctic Peninsula, west-southwest of South Georgia, south of the Falkland Islands, and southeast of Cape Horn. It is within the Antarctic claims of Argentina, Chile and the United Kingdom. The Brazilian Antarctic Program maintains a shelter on the island, Goeldi, supporting the work of up to six researchers each during the summer, and formerly had another ( Wiltgen), which was dismantled in the summers of 1997 and 1998. Toponym Elephant Island's name is attributed to both its elephant head-like appearance and the sighting of elephant seals by Captain George Powell in 1821, one of the earliest sightings. However, in Russia it is still known under the name given by its discoverers in 1821 – Mordvinova Island. Geography The island is oriented approximately ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
South Shetland Islands
The South Shetland Islands are a group of Antarctic islands 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 of 1959, the islands' sovereignty is neither recognized nor disputed by the signatories and they are free for use by any signatory for non-military purposes. The islands have been claimed by the United Kingdom since 1908 and as part of the British Antarctic Territory since 1962. They are also claimed by the governments of Chile (since 1940, as part of the Antártica Chilena province) and Argentina (since 1943, as part of Argentine Antarctica, Tierra del Fuego Province). Several countries maintain research stations on the islands. Most of them are situated on King George Island, benefitting from the airfield of the Chilean base Eduardo Frei. There are sixteen research stations in different parts of the islands, with Chilean stations being ... [...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, 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 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 measured temperature on Earth, . The coastal regions can reach temperatures over in summer. Native species of animals include mites, nematodes, penguins, seals and tardigrades. Where vegetation o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eratosthenes Point
Eratosthenes Point ( bg, нос Ератостен, nos Eratosthenes, ) is the ice-covered, rock-tipped northwest entrance point to Digges Cove on the north coast of Elephant Island in the South Shetland Islands, Antarctica situated just west of the terminus of Snellius Glacier. The area was visited by early 19th century sealers.A. Gurney. ''Below the Convergence: Voyages Toward Antarctica, 1699-1839.'' New York: Penguin Books, 1998. 315 pp. The feature is named after the Greek mathematician and geographer Eratosthenes (c. 276-194 BC) who was the first to calculate the circumference of the Earth; in association with other names in the area deriving from the early development or use of geodetic instruments and methods. Location Eratosthenes Point is located at ,Bulgarian Antarctic Gazetteer. Antarctic Place-names Commission which is 17.2&nb ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Snellius Glacier
Snellius Glacier ( bg, ледник Снелий, lednik Snellius, ) is the glacier extending 7 km in west–east direction and 3 km in south–north direction on the north coast of Elephant Island in the South Shetland Islands, Antarctica draining the north slopes of Pardo Ridge and flowing northwards into Drake Passage between Eratosthenes Point and Ronalds Point. The area was visited by early 19th century sealers.A. Gurney. ''Below the Convergence: Voyages Toward Antarctica, 1699-1839.'' New York: Penguin Books, 1998. 315 pp. The feature is named after Willebrord Snellius (Willebrord Snel van Royen, 1580–1626), a Dutch astronomer and mathematician who was the first to survey distances by triangulation; in association with other names in the area deriving from the early development or use of geodetic instruments and methods. Location Snellius Glacier is centred at . [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Seal Hunting
Seal hunting, or sealing, is the personal or commercial hunting of seals. Seal hunting is currently practiced in ten countries: United States (above the Arctic Circle in Alaska), Canada, Namibia, Denmark (in self-governing Greenland only), Iceland, Norway, Russia, Finland and Sweden. Most of the world's seal hunting takes place in Canada and Greenland. The Canadian 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 claimed that 29,000 harp seals were killed, Russ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leonard Digges (scientist)
Leonard Digges (c.1515 – c.1559) was a well-known English mathematician and surveyor, credited with the invention of the theodolite, and a great populariser of science through his writings in English on surveying, cartography, and military engineering. His birth date is variously suggested as c.1515. or c.1520 (but certainly by 1530). Much of his work was expanded on, annotated, and published by his son, Thomas Digges. His son followed in his footsteps and was a pivotal player in the popularisation of Copernicus's book ''De revolutionibus orbium coelestium''. Notes written by Thomas Digges in the publication of the book ''Pantometria'' in 1570 contain descriptions of how Leonard Digges made use of a "''proportional Glass''" to view distant objects and people. Some, such as astronomer and historian Colin Ronan, claim this describes a reflecting or refracting telescope built between 1540 and 1559, but its vague description and claimed performance makes it dubious. Biography Leona ... [...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 electronically, and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geodesy
Geodesy ( ) is the Earth science of accurately measuring and understanding Earth's figure (geometric shape and size), orientation in space, and gravity. The field also incorporates studies of how these properties change over time and equivalent measurements for other planets (known as '' planetary geodesy''). Geodynamical phenomena, including crustal motion, tides and polar motion, can be studied by designing global and national control networks, applying space geodesy and terrestrial geodetic techniques and relying on datums and coordinate systems. The job title is geodesist or geodetic surveyor. History Definition The word geodesy comes from the Ancient Greek word ''geodaisia'' (literally, "division of Earth"). It is primarily concerned with positioning within the temporally varying gravitational field. Geodesy in the German-speaking world is divided into "higher geodesy" ( or ), which is concerned with measuring Earth on the global scale, and "practical geodes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cape Yelcho
Cape Yelcho is the northwestern extremity of Elephant Island in the South Shetland Islands of Antarctica. It was named by the UK Joint Services Expedition, 1970–71, SCAR after the an steam tug ''''. The tug, which was commanded by , rescued members of |
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