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Grossman Nunataks
The Grossman Nunataks () are a group of about a dozen nunataks in Palmer Land, Antarctica, rising in elevation and running northwest–southeast for between the Lyon Nunataks and the Sky-Hi Nunataks. The group includes features from the Smith Nunataks and the Whitmill Nunatak in the northwest to Gaylord Nunatak and Neff Nunatak in the southeast. The group was mapped by the United States Geological Survey (USGS) from surveys and U.S. Navy aerial photographs, 1961–68, and from U.S. Landsat The Landsat program is the longest-running enterprise for acquisition of satellite imagery of Earth. It is a joint NASA / USGS program. On 23 July 1972, the Earth Resources Technology Satellite was launched. This was eventually renamed to La ... imagery, 1973–74. It was named by the Advisory Committee on Antarctic Names in 1994 after Charles Grossman, formerly Chief of the Shaded Relief and Special Graphics Unit, Branch of Special Maps, USGS, a specialist in the production of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nunatak
A nunatak (from Inuit language, Inuit ''nunataq'') is the summit or ridge of a mountain that protrudes from an ice field or glacier that otherwise covers most of the mountain or ridge. They are also called glacial islands. Examples are natural pyramidal peaks. When rounded by glacial action, smaller rock promontories may be referred to as rognons. The word is of Greenlandic language, Greenlandic origin and has been used in English since the 1870s. Description The term is typically used in areas where a permanent ice sheet is present and the nunataks protrude above the sheet.J. J. Zeeberg, ''Climate and Glacial History of the Novaya Zemlya Archipelago, Russian Arctic''. pp. 82–84 Nunataks present readily identifiable landmark reference points in glaciers or ice caps and are often named. While some nunataks are isolated, sometimes they form dense clusters, such as Queen Louise Land in Greenland. Nunataks are generally angular and jagged, which hampers the formation of glacial i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Palmer Land
Palmer Land () is the portion of the Antarctic Peninsula, Antarctica that lies south of a line joining Cape Jeremy and Cape Agassiz. This application of Palmer Land is consistent with the 1964 agreement between the Advisory Committee on Antarctic Names and the UK Antarctic Place-Names Committee, in which the name Antarctic Peninsula was approved for the major peninsula of Antarctica, and the names Graham Land and Palmer Land for the northern and southern portions, respectively. The line dividing them is roughly 69° S. Boundaries In its southern extreme, the Antarctic Peninsula stretches west, with Palmer Land eventually bordering Ellsworth Land along the 80° W line of longitude. Palmer Land is bounded in the south by the ice-covered Carlson Inlet, an arm of the Filchner-Ronne Ice Shelf, which crosses the 80° W line. This is the base of Cetus Hill. This feature is named after Nathaniel Palmer, an American sealer who explored the Antarctic Peninsula area southward of Decep ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lyon Nunataks
The Lyon Nunataks () are a group of nunataks lying west of the Grossman Nunataks and northwest of the Behrendt Mountains, in Ellsworth Land, Antarctica. They include Grossenbacher Nunatak, Holtet Nunatak] Christoph Nunatak and Isakson Nunatak. Location The Lyon Nunataks are in eastern Ellsworth Land to the northwest of the Merrick Mountains and north-northwest of the Behrendt Mountains, They are southwest of the Yee Nunataks. They are west of the Grossman Nunataks. Features, from west to east, include Grossenbacher Nunatak, Holtet Nunatak, Christoph Nunatak and Isakson Nunatak. Foltz Nunatak, Schwartz Peak and Marshall Nunatak are to the northwest, Mount Rex and Henkle Peak are to the west. Mapping and name The Lyon Nunataks were mapped by the United States Geological Survey (USGS) from surveys and United States Navy air photographs, 1961–67. They were named by the United States Advisory Committee on Antarctic Names (US-ACAN) after Owen R. Lyon, hospital corpsman, Unite ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
