|
Saffar Island
Saffar Island ( bg, остров Сафар, ostrov Saffar, ) is the rocky island off the north coast of Elephant Island in the South Shetland Islands, Antarctica extending 290 m in west–east direction and 230 m in south–north direction, with a surface area of 3.64 ha. It is separated from Elephant Island by a passage narrowing to 325 m at points. The feature is named after Ibn al-Saffar (d. 1035), an Al-Andalusian astronomer and author of one of the Arabic treatises on the astrolabe that introduced the triangulation method to Europe; in association with other names in the area deriving from the early development or use of geodetic instruments and methods. Location Saffar Island is centred at ,Bulgarian Antarctic Gazetteer. Antarctic Place-names Commission which is 22.36 km east-southeast of |
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] |
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] |
Antarctic Treaty System
russian: link=no, Договор об Антарктике es, link=no, Tratado Antártico , name = Antarctic Treaty System , image = Flag of the Antarctic Treaty.svgborder , image_width = 180px , caption = Flag of the Antarctic Treaty System , type = Condominium , date_drafted = , date_signed = December 1, 1959"Antarctic Treaty" in ''The New Encyclopædia Britannica''. Chicago: Encyclopædia Britannica Inc., 15th edn., 1992, Vol. 1, p. 439. , location_signed = Washington, D.C., United States , date_sealed = , date_effective = June 23, 1961 , condition_effective = Ratification of all 12 signatories , date_expiration = , signatories = 12 , parties = 55 , depositor = Federal government of the United States , languages = English, French, Russian, and Spanish , wikisource = Antarctic Treaty The Antarctic Treaty an ... [...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] |
Ibn Al-Saffar
Abu al‐Qasim Ahmad ibn Abd Allah ibn Umar al‐Ghafiqī ibn as-Saffar al‐Andalusi (born in Córdoba, Spain, Cordoba, died in the year 1035 at Denia), also known as Ibn as-Saffar (, literally: son of the brass worker), was a Spanish-Arab astronomer in Al-Andalus. He worked at the school founded by his colleague Al-Majriti in Córdoba, Spain, Córdoba. His best-known work was a treatise on the astrolabe, a text that was in active use until the 15th century and influenced the work of Kepler. He also wrote a commentary on the Zij al-Sindhind, ''Zij as-Sindhind'', and measured the coordinates of Mecca. Ibn as-Saffar later influenced the works of Abu al-Salt, Abu as-Salt. Paul Kunitzsch argued that a Latin treatise on the astrolabe long attributed to Mashallah ibn Athari, Mashallah, and used by Chaucer to write ''A Treatise on the Astrolabe'', is in fact written by Ibn as-Saffar. The exoplanet Saffar, also known as Upsilon Andromedae b, is named in his honor. Saffar Island in Antar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Al-Andalus
Al-Andalus DIN 31635, translit. ; an, al-Andalus; ast, al-Ándalus; eu, al-Andalus; ber, ⴰⵏⴷⴰⵍⵓⵙ, label=Berber languages, Berber, translit=Andalus; ca, al-Àndalus; gl, al-Andalus; oc, Al Andalús; pt, al-Ândalus; es, al-Ándalus () was the Muslim-ruled area of the Iberian Peninsula. The term is used by modern historians for the former Islamic states in modern Spain and Portugal. At its greatest geographical extent, it occupied most of the peninsula and a part of present-day southern France, Septimania (8th century). For nearly a hundred years, from the 9th century to the 10th, al-Andalus extended its presence from Fraxinetum into the Alps with a series of organized raids and chronic banditry. The name describes the different Arab and Muslim states that controlled these territories at various times between 711 and 1492. These boundaries changed constantly as the Christian Reconquista progressed,"Para los autores árabes medievales, el término Al-And ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arabic
Arabic (, ' ; , ' or ) is a Semitic languages, Semitic language spoken primarily across the Arab world.Semitic languages: an international handbook / edited by Stefan Weninger; in collaboration with Geoffrey Khan, Michael P. Streck, Janet C. E.Watson; Walter de Gruyter GmbH & Co. KG, Berlin/Boston, 2011. Having emerged in the 1st century, it is named after the Arabs, Arab people; the term "Arab" was initially used to describe those living in the Arabian Peninsula, as perceived by geographers from ancient Greece. Since the 7th century, Arabic has been characterized by diglossia, with an opposition between a standard Prestige (sociolinguistics), prestige language—i.e., Literary Arabic: Modern Standard Arabic (MSA) or Classical Arabic—and diverse vernacular varieties, which serve as First language, mother tongues. Colloquial dialects vary significantly from MSA, impeding mutual intelligibility. MSA is only acquired through formal education and is not spoken natively. It is ... [...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 |
Point Wild
Point Wild is a point west of Cape Valentine, east of Saddleback Point, and directly adjacent to the Furness Glacier on the north coast of Elephant Island. It was named Cape Wild by the Shackleton Endurance expedition 1914–16, but Point Wild is recommended for this feature because of its small size and to avoid confusion with Cape Wild on George V Coast. It was named for Frank Wild, leader of the party from Shackleton's shipwrecked expedition which camped and managed to survive on the point for four and a half months until they were rescued on 30 August 1916. Historic site A bust of Captain Luis Alberto Pardo, with a monolith and plaques, have been placed at the point to celebrate the rescue of the survivors of the ''Endurance'' by the ''Yelcho''. The inscription reads: "Here on August 30th, 1916, the Chilean Navy cutter ''Yelcho'' commanded by Pilot Luis Pardo Villalón rescued the 22 men from the Shackleton Expedition who survived the wreck of the ''Endurance'' livi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ronalds Point
Ronalds Point is the rocky point on the north coast of Elephant Island in the South Shetland Islands, Antarctica situated just east 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 Francis Ronalds (1788-1873), a British scientist and inventor who modified the octant to create the surveying sector; in association with other names in the area deriving from the early development or use of geodetic instruments and methods. Location Ronalds Point is located at ,Bulgarian Antarctic Gazetteer. Antarctic Place-names Commission which is 22.4 km east-southeast of |
.jpg "Click for more on -> Elephant Island")
