Davidson Island

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Davidson Island ( 66°26′S66°37′W / 66.433°S 66.617°W / -66.433; -66.617 Coordinates: 66°26′S66°37′W / 66.433°S 66.617°W / -66.433; -66.617 ) is a small, dome-shaped ice-covered island between Wollan Island and Shull Rocks in Crystal Sound. It was mapped from air photos obtained by the Ronne Antarctic Research Expedition (1947–48) and the Falkland Islands and Dependencies Aerial Survey Expedition (1958–59) and from surveys by the Falkland Islands Dependencies Survey (1958–59). It was named by the UK Antarctic Place-Names Committee for William L. Davidson, an American physicist who used neutron diffraction to determine the position of the hydrogen atoms in ice.

Geographic coordinate system Coordinate system

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.

Wollan Island is a dome-shaped, ice-capped island with conspicuous rock exposures on its northwest side, lying 1 nautical mile (1.9 km) north of Davidson Island in Crystal Sound. Mapped from surveys by Falkland Islands Dependencies Survey (FIDS) (1958–59). Named by United Kingdom Antarctic Place-Names Committee (UK-APC) for Ernest O. Wollan, American physicist who used neutron diffraction to study the structure of ice.

Shull Rocks is a chain of low snow-covered rocks and one small island, lying in Crystal Sound about 10 miles (16 km) northwest of Cape Rey, Graham Land. Mapped from surveys by Falkland Islands Dependencies Survey (FIDS) (1958–59). Named by United Kingdom Antarctic Place-Names Committee (UK-APC) for Clifford G. Shull, American physicist who used neutron diffraction to determine the position of the hydrogen atoms in ice.

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Hag Pike is a conspicuous rock column, 710 metres (2,330 ft) high, on the north side of the Wordie Ice Shelf near the west coast of the Antarctic Peninsula. Together with the mountain to the north, it forms the west side of the mouth of Hariot Glacier. Hag Pike was photographed from the air by the British Graham Land Expedition, 1937, and by the Ronne Antarctic Research Expedition, 1947. It was surveyed by the Falkland Islands Dependencies Survey, 1948–50, and 1958. The name by the UK Antarctic Place-Names Committee is descriptive, "hag" being the stump of a tree which remains after felling.

Atom Rock is an insular rock 0.5 miles (0.8 km) northeast of Rambler Island in the Bragg Islands, lying in Crystal Sound off the west coast of Graham Land. It was mapped from surveys by the Falkland Islands Dependencies Survey (1958–59), and named by the UK Antarctic Place-Names Committee in association with Bragg Islands.

The Bragg Islands are a small group of islands in Crystal Sound, about 7 nautical miles (13 km) north of Cape Rey, Graham Land. They were mapped from surveys by the Falkland Islands Dependencies Survey (1958–59) and from air photos obtained by the Ronne Antarctic Research Expedition (1947–48). The group was named by the UK Antarctic Place-Names Committee for Sir William H. Bragg, an English physicist who interpreted X-ray measurements to give the location of oxygen atoms in the structure of ice.

Briggs Peak is an isolated, conical mountain, 1,120 metres (3,670 ft) high, on the northeast side of the Wordie Ice Shelf, Antarctic Peninsula. It was first roughly surveyed by the British Graham Land Expedition, 1936–37, and photographed by the Ronne Antarctic Research Expedition, November 1947. It was surveyed from the ground by the Falkland Islands Dependencies Survey in 1949 and 1958, and named by the UK Antarctic Place-Names Committee after Henry Briggs, the English mathematician who, with John Napier, was responsible for the invention of logarithms, about 1614.

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.

Delius Glacier is a glacier, 6 nautical miles (11 km) long and 2 nautical miles (4 km) wide, flowing west from the Elgar Uplands into Nichols Snowfield, in the northern part of Alexander Island, Antarctica. It was first seen from the air and roughly mapped by the British Graham Land Expedition in 1937. It was more accurately mapped from air photos taken by the Ronne Antarctic Research Expedition, 1947–48, by D. Searle of the Falkland Islands Dependencies Survey in 1960, and from U.S. Landsat imagery of February 1975. It was named by the UK Antarctic Place-Names Committee after Frederick Delius, the British composer.

Turner Glacier glacier in Antarctica

Turner Glacier is a glacier on the east side of Mount Liotard flowing northeast into Ryder Bay, Adelaide Island. The glacier was surveyed by Falkland Islands Dependencies Survey (FIDS), 1948, and photographed from the air by Falkland Islands and Dependencies Aerial Survey Expedition (FIDASE), 1956-57. Named by the United Kingdom Antarctic Place-Names Committee (UK-APC) in 1977 after Andrew John Turner, British Antarctic Survey (BAS) builder, Halley Station, 1973–74; Signy Island, 1974–75; Rothera Station, 1976–77, 1978–80; and Faraday Station, 1982-83.

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Gibbs Glacier is a glacier, 15 nautical miles (28 km) long, flowing southeast into the northern part of Mercator Ice Piedmont on the east side of the Antarctic Peninsula. This feature together with Neny Glacier, which flows northwest, occupy a transverse depression between Mercator Ice Piedmont and Neny Fjord on the west side of the Antarctic Peninsula. Gibbs Glacier was photographed from the air and first mapped by the United States Antarctic Service, 1939–41, and the Ronne Antarctic Research Expedition, 1947–48. It was named by the UK Antarctic Place-Names Committee for Peter M. Gibbs of the Falkland Islands Dependencies Survey, a surveyor at Horseshoe Island, 1957, and leader at Stonington Island, 1958, who was responsible for the first ground survey of the glacier.

Meridian Glacier is a broad glacier, 9 nautical miles (17 km) long, which flows south along the west side of Godfrey Upland and joins Clarke Glacier between Behaim Peak and Elton Hill, in southern Graham Land, Antarctica. Finn Ronne and Carl R. Eklund of the United States Antarctic Service travelled along this glacier in January 1941. It was photographed from the air by the Ronne Antarctic Research Expedition in November 1947, and was surveyed by the Falkland Islands Dependencies Survey in December 1958. The glacier was so named by the UK Antarctic Place-Names Committee because the glacier flows from north to south along the meridian.

Hariot Glacier is a glacier flowing northwest along the south side of Morgan Upland before turning west into the northern portion of the Wordie Ice Shelf, along the west coast of the Antarctic Peninsula. It was roughly surveyed by the British Graham Land Expedition, 1936–37, and the upper reaches were photographed from the air by the Ronne Antarctic Research Expedition, 1947. The glacier was surveyed from the ground by members of the Falkland Islands Dependencies Survey who travelled along it in December 1958, and it was named by the UK Antarctic Place-Names Committee after Thomas Hariot, an English mathematician who pioneered new methods of navigation under the patronage of Sir Walter Raleigh.

Mount Liotard is a mountain having a conspicuous ice-covered peak, 2,225 metres (7,300 ft) high, standing midway between Mount Gaudry and Mount Ditte in the south part of Adelaide Island, Antarctica. It was discovered and first surveyed by the Fourth French Antarctic Expedition in 1909. It was resurveyed in 1948 by the Falkland Islands Dependencies Survey (FIDS) and named by the UK Antarctic Place-Names Committee for Andre F. Liotard, a French observer with the FIDS in 1947–48 and the leader of the French Antarctic Expedition, 1949–51.

Mercator Ice Piedmont is a gently-sloping ice piedmont at the head of Mobiloil Inlet, formed by the confluence of the Gibbs, Lammers, Cole and Weyerhaeuser Glaciers in eastern Graham Land, Antarctica. The feature was first photographed from the air by Lincoln Ellsworth in November 1935, and was plotted from these photos by W.L.G. Joerg as the lower end of a "major valley depression" along the coast. It was first seen from the ground by Finn Ronne and Carl R. Eklund of the United States Antarctic Service, 1939–41, which also obtained air photos. The ice piedmont was surveyed by the Falkland Islands Dependencies Survey in December 1958, and was named by the UK Antarctic Place-Names Committee after Flemish mathematician and geographer Gerardus Mercator, the originator, in 1568, of the map projection which bears his name.

Seller Glacier is a well-defined glacier, 20 nautical miles (37 km) long and 4 nautical miles (7 km) wide flowing westward into Forster Ice Piedmont, western Antarctic Peninsula, just north of Flinders Peak. Roughly surveyed by British Graham Land Expedition (BGLE), 1936–37, and resurveyed by Falkland Islands Dependencies Survey (FIDS) in December 1958.

The Kelvin Crests are a line of steep-sided elevations with ice-covered cliffs 5 nautical miles (9 km) long, on the north side of Airy Glacier near its junction with Forster Ice Piedmont on the west side of the Antarctic Peninsula. Roughly surveyed by the British Graham Land Expedition in 1936–37, they were photographed from the air by the Ronne Antarctic Research Expedition in 1947. They were surveyed from the ground, from the southwest only, by members of the Falkland Islands Dependencies Survey, December 1958, and completely mapped by the United States Geological Survey, 1974. The feature was named by the UK Antarctic Place-Names Committee for William Thomson, 1st Baron Kelvin, a British physicist and engineer who made substantial improvements in the design of magnetic compasses, 1873–78, and invented the Thomson sounding machine in 1878.

Rigsby Islands is a small group of ice-capped islands lying off the northeast coast of Adelaide Island, about 2 nautical miles (3.7 km) south of Sillard Islands. Mapped from air photos taken by Ronne Antarctic Research Expedition (RARE) (1947–48) and Falkland Islands and Dependencies Aerial Survey Expedition (FIDASE) (1956–57). Named by United Kingdom Antarctic Place-Names Committee (UK-APC) for George P. Rigsby, American geologist who has specialized in the investigation of ice crystal structure and the plasticity of ice.

Levy Island is an isolated snow-covered island in Crystal Sound, Antarctica, about 7.5 nautical miles (14 km) east of Gagge Point, Lavoisier Island. It was mapped from air photos taken by the Ronne Antarctic Research Expedition (1947–48) and surveys by the Falkland Islands Dependencies Survey (1958–59). The island was named by the UK Antarctic Place-Names Committee for Henri A. Levy, an American physical chemist who, with S.W. Peterson, determined the location of the hydrogen atoms in ice by neutron diffraction, in 1957.

References

United States Geological Survey scientific agency of the United States government

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.

Geographic Names Information System geographical database

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.