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Alectoria Island
Alectoria Island is a low, nearly ice-free island less than long. It lies in Prince Gustav Channel, about off the terminus of Aitkenhead Glacier, Trinity Peninsula, Antarctica. It was surveyed in 1945 by the Falkland Islands Dependencies Survey The British Antarctic Survey (BAS) is the United Kingdom's national polar research institute. It has a dual purpose, to conduct polar science, enabling better understanding of global issues, and to provide an active presence in the Antarctic on ..., who named it after the lichen '' Alectoria'' which was predominant on the island at the time. See also * List of Antarctic and sub-Antarctic islands Map Trinity Peninsula.Scale 1:250000 topographic map No. 5697. Institut für Angewandte Geodäsie and British Antarctic Survey, 1996. References SCAR Composite Antarctic Gazetteer Islands of Trinity Peninsula {{TrinityPeninsula-geo-stub ... [...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] |
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] |
Prince Gustav Channel
The Prince Gustav Channel was named in 1903 after Crown Prince Gustav of Sweden (later King Gustav V) by Otto Nordenskiöld of the Swedish Antarctic Expedition. The channel is bounded on the west by the Antarctic Peninsula and on the east by James Ross Island. It is about long and ranges from wide. On 27 February 1995, the British Antarctic Survey (BAS) reported that an ice shelf formerly blocking the channel had disintegrated. This ice shelf had spanned approximately prior to its disintegration. In the area previously covered by the shelf, the channel's water depth is between . Between February and March 2000, scientists collected sediment cores 5 to 6 m in length from the ocean floor. Carbon dating of organic material found in the sediment layers suggested that for a period between 2,000 and 5,000 years ago, much of the channel was seasonally open water. While icebergs were able to navigate the channel, ice rafted debris was deposited within the sediment. Prince Gustav Ic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aitkenhead Glacier
Aitkenhead Glacier () is a long glacier flowing east-southeast from the Detroit Plateau, Graham Land, (south of Mancho Buttress and Baley Nunatak and north of Simpson Nunatak and Hitar Petar Nunatak) into Prince Gustav Channel (close north of Alectoria Island). It was mapped from surveys by the Falkland Islands Dependencies Survey (FIDS) (1960–61), and named by the United Kingdom Antarctic Place-Names Committee for Neil Aitkenhead, a FIDS geologist at Hope Bay (1959–60). See also * List of glaciers in the Antarctic There are many glaciers in the Antarctic. This set of lists does not include ice sheets, ice caps or ice fields, such as the Antarctic ice sheet, but includes glacial features that are defined by their flow, rather than general bodies of ice. Th ... Map Trinity Peninsula.Scale 1:250000 topographic map No. 5697. Institut für Angewandte Geodäsie and British Antarctic Survey, 1996. References SCAR Composite Antarctic Gazetteer * Glaciers of Tr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trinity Peninsula
Trinity Peninsula is the northernmost part of the Antarctic Peninsula. It extends northeastward for about 130 km (80 mi) to Cape Dubouzet from an imaginary line connecting Cape Kater on the north-west coast and Cape Longing on the south-east coast. Prime Head is the northernmost point of this peninsula. Some 20 kilometers southeast of Prime Head is Hope Bay with the year-round Argentinian Esperanza Base. History It was first sighted on 30 January 1820 by Edward Bransfield, Master, Royal Navy, immediately after his charting of the newly discovered South Shetland Islands nearby. In the century following the peninsula's discovery, chartmakers used various names (Trinity Land, Palmer Land, and Land of Louis Philippe) for this portion of it, each name having some historical merit. The recommended name derives from "Trinity Land", given by Bransfield during 1820 in likely recognition of the Corporation of Trinity House, Britain's historical maritime pilotage authority, altho ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Falkland Islands Dependencies Survey
The British Antarctic Survey (BAS) is the United Kingdom's national polar research institute. It has a dual purpose, to conduct polar science, enabling better understanding of global issues, and to provide an active presence in the Antarctic on behalf of the UK. It is part of the Natural Environment Research Council (NERC). With over 400 staff, BAS takes an active role in Antarctic affairs, operating five research stations, one ship and five aircraft in both polar regions, as well as addressing key global and regional issues. This involves joint research projects with over 40 UK universities and more than 120 national and international collaborations. Having taken shape from activities during World War II, it was known as the Falkland Islands Dependencies Survey until 1962. History Operation Tabarin was a small British expedition in 1943 to establish permanently occupied bases in the Antarctic. It was a joint undertaking by the Admiralty and the Colonial Office. At the end of t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alectoria (genus Of Lichens)
''Alectoria'' is a genus of fruticose lichens belonging to the family Parmeliaceae. Species *'' Alectoria brodoana'' – Mexico *'' Alectoria gowardii'' – Northwest Territories *'' Alectoria imshaugii'' *'' Alectoria lata'' – North America; Central America; Asia *'' Alectoria mexicana'' – Mexico *'' Alectoria ochroleuca'' *''Alectoria ochroleucoides'' – Mexico *''Alectoria sarmentosa'' *'' Alectoria sorediosa'' *'' Alectoria spiculatosa'' – Yunnan Yunnan , () is a landlocked Provinces of China, province in Southwest China, the southwest of the People's Republic of China. The province spans approximately and has a population of 48.3 million (as of 2018). The capital of the province is ..., China Gallery Image:Alectoria imshaugii 210422.jpg, ''Alectoria imshaugii'' Image:Alectoria ochroleuca.jpg, ''Alectoria ochroleuca'' References Parmeliaceae Lecanorales genera Lichen genera Taxa named by Erik Acharius Taxa described in 1809 {{Parm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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