The Harrisson Ice Rises ( 66°27′S96°39′E / 66.450°S 96.650°E Coordinates: 66°27′S96°39′E / 66.450°S 96.650°E ) are a local swelling of the ice surface 12 nautical miles (22 km) west-southwest of Henderson Island, Antarctica, where the Shackleton Ice Shelf overrides an underlying obstruction. The feature was discovered by the Eastern Sledge Party of the Australasian Antarctic Expedition (1911–14) under Douglas Mawson, who named the feature for Charles T. Harrisson, biologist with the expedition. [1]
A geographic coordinate system is a coordinate system that enables every location on Earth to be specified by a set of numbers, letters or symbols. The coordinates are often chosen such that one of the numbers represents a vertical position and two or three of the numbers represent a horizontal position; alternatively, a geographic position may be expressed in a combined three-dimensional Cartesian vector. A common choice of coordinates is latitude, longitude and elevation. To specify a location on a plane requires a map projection.
Henderson Island is an ice-covered island 17 kilometres (9 nmi) long and rising to 240 m (787 ft), lying 17 kilometres (9 nmi) southeast of Masson Island within the Shackleton Ice Shelf. Henderson Island was discovered in August 1912 by the Western Base Party of the Australian Antarctic Expedition under Sir Douglas Mawson and named by him for Prof. G. C. Henderson of Adelaide, a member of the Australian Antarctic Expedition Advisory Committee.
Shackleton Ice Shelf is an extensive ice shelf fronting the coast of East Antarctica for about 384 km, projecting seaward about 145 km in the western portion and 64 km in the east. It occupies an area of 33,820 km². It is part of Mawson Sea and separates the Queen Mary Coast to the west from the Knox Coast of Wilkes Land to the east. The existence of this ice shelf was first made known by the USEE under Charles Wilkes who mapped a portion of it from the Vincennes in February 1840. It was explored by the Australian Antarctic Expedition under Douglas Mawson (1911–14) who named it for Sir Ernest Shackleton. The extent of the ice shelf was mapped in greater detail in 1955, using aerial photography obtained by US Navy Operation Highjump, 1946-47. Further mapping by the Soviet Expedition of 1956 showed the portion eastward of Scott Glacier to be a part of this ice shelf.
Pavie Ridge or Cap Pavie or Île Pavie is a rocky ridge located at 68°34′S66°59′W in Antarctica which rises over 500 m. It extends south and west from Martin Glacier to Moraine Cove, and forms the southeastern limit of the Bertrand Ice Piedmont, on the west coast of Graham Land.
Denman Glacier is a glacier 7 to 10 nautical miles wide, descending north some 70 nautical miles, which debouches into the Shackleton Ice Shelf east of David Island, Queen Mary Land. It was discovered in November 1912 by the Western Base party of the Australasian Antarctic Expedition under Sir Douglas Mawson. Mawson named the glacier for Lord Denman, Governor-General of Australia in 1911, a patron of the expedition.
Mount LeMasurier is an ice-free coastal mountain which rises to more than 800 metres (2,600 ft) between Mount Vance and Mount Langway, in the central part of the Ickes Mountains of Marie Byrd Land, Antarctica. The feature was discovered and photographed from aircraft of the United States Antarctic Service, 1939–41, and was named by the Advisory Committee on Antarctic Names for Wesley E. LeMasurier, a geologist with the Marie Byrd Land Survey II, 1967–68. Later, LeMasurier continued research as a faculty member of the geology department at University of Colorado at Denver. In 2018, he is still actively publishing scholarly articles and participating in research projects out of CU Boulder's campus.
Kvaevefjellet Mountain is an elongated mountain, about 6 miles (10 km) long and surmounted by Mount Fučík, which has been eroded by the ice into a series of spurs that enclose small cirques, standing at the north end of the Payer Mountains in Queen Maud Land, Antarctica. It was discovered and plotted from air photos by the Third German Antarctic Expedition, 1938–39. It was replotted from air photos and surveys, and named, by the Sixth Norwegian Antarctic Expedition, 1956–60. Aurkvaevane Cirques, a set of three cirques, indents the bottom of the mountain.
Beacon Valley is an ice-free valley between Pyramid Mountain and Beacon Heights, in Victoria Land. It was mapped by the British Antarctic Expedition, 1910–13, and named by the Victoria University of Wellington Antarctic Expedition (VUWAE) (1958–59) after Beacon Heights.
Crescent Scarp is a conspicuous, north-facing escarpment of rock and ice cliffs, rising to 1,400 metres (4,600 ft) on the south side of Fleming Glacier in northern Palmer Land. It was roughly surveyed from the ground by the British Graham Land Expedition in 1936-37, and photographed from the air by the United States Antarctic Service in 1940 and the Ronne Antarctic Research Expedition in 1947. It was resurveyed by the Falkland Islands Dependencies Survey in 1958, and named descriptively.
Deadmond Glacier is a glacier about 6 nautical miles (11 km) long, flowing from the east side of Evans Peninsula on Thurston Island into Cadwalader Inlet. It was discovered by the U.S. Navy Bellingshausen Sea Expedition in February 1960, and was named by the Advisory Committee on Antarctic Names for Lieutenant Commander Robert B. Deadmond, executive officer of USS Burton Island, forming part of this expedition.
Français Glacier is a glacier 4 nautical miles (7 km) wide and 12 nautical miles (22 km) long, flowing north-northeast from the continental ice to the Antarctic coast close west of Ravin Bay. Though no glaciers were noted on Captain Jules Dumont d'Urville's chart of this coast, the close correlation of his "Baie des Ravins" feature and narrative description with the indentation of the coast near the mouth of this glacier suggests first sighting of this feature by the French Antarctic Expedition, 1837–40. During December 1912 members of the Main Base Party of the Australasian Antarctic Expedition (AAE) camped on the upland slopes close east of the glacier, but no reference was made to the glacier in the AAE reports, though a clear view and unpublished sketch were obtained of the distant coast to the northwest.
Gavlen Ridge is a ridge forming the southern extremity of the Roots Heights, in the southern part of the Sverdrup Mountains in Queen Maud Land, Antarctica. It was photographed from the air by the Third German Antarctic Expedition, which took place in 1938–39. It was mapped by Norwegian cartographers from surveys and air photos by the Norwegian–British–Swedish Antarctic Expedition (1949–52) and from air photos by the Norwegian expedition (1958–59) and named Gavlen.
The Géologie Archipelago, also known as the Geology Archipelago or Cape Geology Archipelago, is a small archipelago of rocky islands and rocks close to the north of Cape Géodésie and Astrolabe Glacier Tongue, extending from Helene Island on the west to the Dumoulin Islands on the east, in Adélie Land, Antarctica.
Mount Gleadell is a nearly conical ice-free peak, 560 metres (1,840 ft) high, the highest summit on the headland just north of Observation Island at the east side of Amundsen Bay, Antarctica. It was sighted in October 1956 by an Australian National Antarctic Research Expeditions party under P.W. Crohn, and was named for Geoffrey Gleadell, a cook at Mawson Station in 1954.
Mount McGhee is a mountain 4 nautical miles (7.4 km) south of Mount Smethurst in Enderby Land, Antarctica. It was plotted from air photos taken from Australian National Antarctic Research Expeditions aircraft in 1957 and was named by the Antarctic Names Committee of Australia for J. McGhee, a mechanic and driver at Wilkes Station in 1961.
Mount Medina is a prominent ice-covered mountain which rises to 1,845 metres (6,050 ft) from the northeastern part of Hadley Upland and overlooks the head of Gibbs Glacier in southern Graham Land, Antarctica. It was photographed by the Ronne Antarctic Research Expedition in November 1947, and was surveyed by the Falkland Islands Dependencies Survey in 1958. The mountain was named by the UK Antarctic Place-Names Committee after Pedro de Medina (1493–1567), Spanish Cosmographer Royal, who wrote Arte de Navegar, an important manual of navigation.
Cape Harrisson is a point just northward of the Possession Rocks at the junction of Northcliffe Glacier and Denman Glacier. It was discovered by the Australasian Antarctic Expedition (1911–14) under Sir Douglas Mawson, who named the feature for Charles T. Harrisson, biologist and artist at the expedition's Western Base. The spelling Harrisson is approved in this toponym, and also in Harrisson Ice Rises, on the basis of the honoree's signature on several of his paintings included in Mawson's The Home of the Blizzard.
Higgins Nunatak is the largest of the Samuel Nunataks, lying near the south end of this group in the Heritage Range in Antarctica. It was mapped by the United States Geological Survey from surveys and U.S. Navy air photos, 1961–66, and was named by the Advisory Committee on Antarctic Names for utilitiesman John C. Higgins, U.S. Navy, a member of the McMurdo Station party during Operation Deep Freeze 1966.
Humphreys Ice Rise is an ice rise in the Muller Ice Shelf in the southwestern part of Lallemand Fjord, Loubet Coast, Antarctica. It was photographed from the air by the Falkland Islands and Dependencies Aerial Survey Expedition, 1956–57, and surveyed by the Falkland Islands Dependencies Survey, 1956–59. In association with the names of glaciologists grouped in this area, the feature was named "Humphreys Hill" by the UK Antarctic Place-Names Committee after William J. Humphreys, an American meteorologist and specialist on the effects of ice in the atmosphere. Humphreys was joint author with W.A. Bentley of Snow Crystals, New York, 1931. It was renamed as Humphreys Ice Rise to reflect the true nature of the feature.
Snøbjørga Bluff is a rock and ice bluff at the east side of the head of Stuttflog Glacier, in the Mühlig-Hofmann Mountains of Queen Maud Land. It was mapped by Norwegian cartographers from surveys and air photos by the Norwegian Antarctic Expedition (1956–60) and named Snøbjørga.
Cape Lyttelton is a cape forming the southern entrance point of Shackleton Inlet, along the western edge of the Ross Ice Shelf, Antarctica. It was discovered by the British National Antarctic Expedition (1901–04) and named after Lyttelton, New Zealand. The Discovery started on the last lap of its journey south from Lyttelton, where very generous assistance was given the expedition.
Cape Robert is an ice-covered point at the west side of Marret Glacier. It was discovered and named by the French expedition under Captain Jules Dumont d'Urville in 1840. The name Robert is the first name of a member of the family of Dumont d'Urville. The point was roughly charted by the Australasian Antarctic Expedition under Mawson, 1911–14, and more recently delineated from air photos taken by U.S. Navy Operation Highjump, 1946-47.
The United States Geological Survey is a scientific agency of the United States government. The scientists of the USGS study the landscape of the United States, its natural resources, and the natural hazards that threaten it. The organization has four major science disciplines, concerning biology, geography, geology, and hydrology. The USGS is a fact-finding research organization with no regulatory responsibility.
The Geographic Names Information System (GNIS) is a database that contains name and locative information about more than two million physical and cultural features located throughout the United States of America and its territories. It is a type of gazetteer. GNIS was developed by the United States Geological Survey in cooperation with the United States Board on Geographic Names (BGN) to promote the standardization of feature names.
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