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Levko Glacier
Levko Glacier () is a glacier flowing from Pallid Crest to the eastern end of Thurston Island, Antarctica. It enters Seraph Bay between Tierney Peninsula and Simpson Bluff. The glacier was named by the Advisory Committee on Antarctic Names after G. Levko, Photographer's Mate in the Eastern Group of U.S. Navy Operation Highjump, which obtained aerial photographs of Thurston Island and adjacent coastal areas, 1946–47. See also * List of glaciers in the Antarctic * Glaciology Maps Thurston Island – Jones Mountains.1:500000 Antarctica Sketch Map. US Geological Survey, 1967. Antarctic Digital Database (ADD).Scale 1:250000 topographic map of Antarctica. Scientific Committee on Antarctic Research (SCAR). Since 1993, regularly upgraded and updated. References * {{Glaciers of Ellsworth Land Glaciers of Thurston Island ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thurston Island
Thurston Island is an ice-covered, glacially dissected island, long, wide and in area, lying a short way off the northwest end of Ellsworth Land, Antarctica. It is the third-largest island of Antarctica, after Alexander Island and Berkner Island. The island was discovered from the air by Rear Admiral Byrd on February 27, 1940, who named it for W. Harris Thurston, a New York textile manufacturer, designer of the windproof "Byrd Cloth" and sponsor of Antarctic expeditions. Thurston Island is separated from the mainland by Peacock Sound, which is occupied by the western portion of Abbot Ice Shelf. It divides Bellingshausen Sea to the east from Amundsen Sea to the west. Originally mistaken as a peninsula, the feature was not recognised an island until 1960. Geography The western extremity of the island is Cape Flying Fish. The eastern extremity is Cape Annawan, off Tierney Peninsula. The southeast end of the island is Cape Walker. The island is divided south-north by the ... [...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] |
Ellsworth Land
Ellsworth Land is a portion of the Antarctic continent bounded on the west by Marie Byrd Land, on the north by Bellingshausen Sea, on the northeast by the base of Antarctic Peninsula, and on the east by the western margin of the Filchner–Ronne Ice Shelf. It extends between 103°24'W and 79°45'W. The area west of 90°W is unclaimed, the area between 84°W and 90°W is claimed by Chile only, and the remainder by Chile and the United Kingdom as a part of the British Antarctic Territory. Eights Coast stretches between 103°24'W and 89°35'W, and Bryan Coast between 89°35'W and 79°45'W. It is largely a high ice plateau, but includes the Ellsworth Mountains and a number of scattered mountain groups: Hudson, Jones, Behrendt, Hauberg, Merrick, Sweeney and Scaife Mountains. This land lies near the center of the area traversed by American explorer Lincoln Ellsworth on an airplane flight during November–December 1935. It was named for him by the Advisory Committee on Antarct ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Seraph Bay
Seraph Bay is an open bay about 15 nautical miles (28 km) wide, formed at the southeast end of Thurston Island. It is bounded by Cape Annawan on the northwest, Abbot Ice Shelf on the southwest and Dustin Island on the southeast. It was discovered by members of the United States Antarctic Service in flights from the ship ''Bear'' in February 1940. The bay was more accurately delineated by the U.S. Navy Bellingshausen Sea Expedition in February 1960. It was named by the Advisory Committee on Antarctic Names for the brig Seraph of Stonington, CT, which in 1830, under Captain Benjamin Pendleton, sailed westward from the South Shetland Islands, reaching as far as 101W, south of 60S. Maps Thurston Island – Jones Mountains.1:500000 Antarctica Sketch Map. US Geological Survey, 1967. Antarctic Digital Database (ADD).Scale 1:250000 topographic map of Antarctica. Scientific Committee on Antarctic Research (SCAR), 1993–2016. Further reading * Defense Mapping Agency 1992, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glacier
A glacier (; ) is a persistent body of dense ice that is constantly moving under its own weight. A glacier forms where the accumulation of snow exceeds its Ablation#Glaciology, ablation over many years, often Century, centuries. It acquires distinguishing features, such as Crevasse, crevasses and Serac, seracs, as it slowly flows and deforms under stresses induced by its weight. As it moves, it abrades rock and debris from its substrate to create landforms such as cirques, moraines, or fjords. Although a glacier may flow into a body of water, it forms only on land and is distinct from the much thinner sea ice and lake ice that form on the surface of bodies of water. On Earth, 99% of glacial ice is contained within vast ice sheets (also known as "continental glaciers") in the polar regions, but glaciers may be found in mountain ranges on every continent other than the Australian mainland, including Oceania's high-latitude oceanic island countries such as New Zealand. Between lati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pallid Crest
Tierney Peninsula () is an ice-covered peninsula about 14 nautical miles (26 km) long, between Savage Glacier and Morgan Inlet in the east end of Thurston Island. The east extremity of the peninsula (and Thurston Island overall) is Cape Annawan. These features were discovered on helicopter flights from the USS ''Burton Island'' and Glacier of the U.S. Navy Bellingshausen Sea Expedition in February 1960 and named by the Advisory Committee on Antarctic Names (US-ACAN). The peninsula was named for J.Q. Tierney, oceanographer aboard the Burton Island on this expedition. The cape was named for the ship ''Annawan'' of the United States Expedition of 1829–31, which with the Penguin sailed west from the 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 1 ... i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tierney Peninsula
Tierney Peninsula () is an ice-covered peninsula about 14 nautical miles (26 km) long, between Savage Glacier and Morgan Inlet in the east end of Thurston Island. The east extremity of the peninsula (and Thurston Island overall) is Cape Annawan. These features were discovered on helicopter flights from the USS ''Burton Island'' and Glacier of the U.S. Navy Bellingshausen Sea Expedition in February 1960 and named by the Advisory Committee on Antarctic Names (US-ACAN). The peninsula was named for J.Q. Tierney, oceanographer aboard the Burton Island on this expedition. The cape was named for the ship ''Annawan'' of the United States Expedition of 1829–31, which with the Penguin sailed west from the 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 1 ... i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Simpson Bluff
Thurston Island is an ice-covered, glacially dissected island, long, wide and in area, lying a short way off the northwest end of Ellsworth Land, Antarctica. It is the third-largest island of Antarctica, after Alexander Island and Berkner Island. The island was discovered from the air by Rear Admiral Byrd on February 27, 1940, who named it for W. Harris Thurston, a New York textile manufacturer, designer of the windproof "Byrd Cloth" and sponsor of Antarctic expeditions. Thurston Island is separated from the mainland by Peacock Sound, which is occupied by the western portion of Abbot Ice Shelf. It divides Bellingshausen Sea to the east from Amundsen Sea to the west. Originally mistaken as a peninsula, the feature was not recognised an island until 1960. Geography The western extremity of the island is Cape Flying Fish. The eastern extremity is Cape Annawan, off Tierney Peninsula. The southeast end of the island is Cape Walker. The island is divided south-north by the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Advisory Committee On Antarctic Names
The Advisory Committee on Antarctic Names (ACAN or US-ACAN) is an advisory committee of the United States Board on Geographic Names responsible for recommending commemorative names for features in Antarctica. History The committee was established in 1943 as the Special Committee on Antarctic Names (SCAN). It became the Advisory Committee on Antarctic Names in 1947. Fred G. Alberts was Secretary of the Committee from 1949 to 1980. By 1959, a structured nomenclature was reached, allowing for further exploration, structured mapping of the region and a unique naming system. A 1990 ACAN gazeeter of Antarctica listed 16,000 names. Description The United States does not recognise territorial boundaries within Antarctica, so ACAN assigns names to features anywhere within the continent, in consultation with other national nomenclature bodies where appropriate, as defined by the Antarctic Treaty System. The research and staff support for the ACAN is provided by the United States Geologi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Operation Highjump
Operation HIGHJUMP, officially titled The United States Navy Antarctic Developments Program, 1946–1947, (also called Task Force 68), was a United States Navy (USN) operation to establish the Antarctic research base Little America IV. The operation was organized by Rear Admiral Richard E. Byrd, Jr., USN (Ret), Officer in Charge, Task Force 68, and led by Rear Admiral Ethan Erik Larson, USN, Commanding Officer, Task Force 68. Operation HIGHJUMP commenced 26 August 1946 and ended in late February 1947. Task Force 68 included 4,700 men, 13 ships, and 33 aircraft. HIGHJUMP's objectives, according to the U.S. Navy report of the operation, were: # Training personnel and testing equipment in frigid conditions; # Consolidating and extending the United States' sovereignty over the largest practicable area of the Antarctic continent (publicly denied as a goal before the expedition ended); # Determining the feasibility of establishing, maintaining, and utilizing bases in the Antarctic an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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. The lists include outlet glaciers, valley glaciers, cirque glaciers, tidewater glaciers and ice streams. Ice streams are a type of glacier and many of them have "glacier" in their name, e.g. Pine Island Glacier. Ice shelves are listed separately in the List of Antarctic ice shelves. For the purposes of these lists, the Antarctic is defined as any latitude further south than 60° (the continental limit according to the Antarctic Treaty System). List by letters * List of glaciers in the Antarctic: A–H * List of glaciers in the Antarctic: I–Z See also * List of Antarctic and subantarctic islands * List of Antarctic ice rises * List of Antarctic ice shelves * List of Antarctic ice streams * List of glaciers * List of subantar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
_in_Antartica_1947.jpg "Click for more on -> Operation Highjump")
