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Harter Nunatak
Harter Nunatak () is a small, relatively isolated nunatak lying northeast of Mount Tidd at the northeast side of the Pirrit Hills in Antarctica. It was mapped by the United States Geological Survey from surveys and U.S. Navy aerial photographs, 1958–61, and was named by the Advisory Committee on Antarctic Names for Gene L. Harter, a meteorologist at Little America V Little America was a series of Antarctic exploration bases from 1929 to 1958, located on the Ross Ice Shelf, south of the Bay of Whales. The coordinates are approximate. Little America I The first base in the series was established in January 1 ... in 1957. References Nunataks of Ellsworth Land {{EllsworthLand-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nunatak
A nunatak (from 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 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 ice on their tops, although snow can a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mount Tidd
Mount Tidd () is a prominent rock peak which is the highest summit in Pirrit Hills. The peak was positioned by the U.S. Ellsworth-Byrd Traverse Party on December 10, 1958. It was named by the Advisory Committee on Antarctic Names (US-ACAN) for Lieutenant Paul Tidd of the U.S. Navy, who was the Officer-in-Charge of Ellsworth Station Ellsworth Scientific Station ( es, Estación Científica Ellsworth, or simply ''Estación Ellsworth'' or ''Base Ellsworth'') was a permanent, all year-round originally American, then Argentine Antarctic scientific research station named after Ame ... in 1958. Mountains of Ellsworth Land {{EllsworthLand-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pirrit Hills
Pirrit Hills () is an isolated group of rocky peaks and nunataks about 7 nautical miles (13 km) in extent, lying southward of the Ellsworth Mountains, between the Heritage Range and Nash Hills. The feature was positioned by the U.S. Ellsworth-Byrd Traverse Party in December 1958. It was named by the Advisory Committee on Antarctic Names (US-ACAN) for John Pirrit, a glaciologist with the traverse party who had wintered at Ellsworth Station. Pirrit was scientific leader at Byrd Station in 1959. See also * Mount Goodwin, second most prominent summit in Pirrit Hills * Mountains in Antarctica This is a list of all the Ultra prominent peaks (with topographic prominence greater than 1,500 metres) in Antarctica. Some islands in the South Atlantic have also been included and can be found at the end of the list. Antarctica South Atl ... * Mount Turcotte References External links * Mountains of Ellsworth Land Nunataks of Ellsworth Land {{EllsworthLand-geo- ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States Geological Survey
The United States Geological Survey (USGS), formerly simply known as the 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's work spans the disciplines of biology, geography, geology, and hydrology. The USGS is a fact-finding research organization with no regulatory responsibility. The agency was founded on March 3, 1879. The USGS is a bureau of the United States Department of the Interior; it is that department's sole scientific agency. The USGS employs approximately 8,670 people and is headquartered in Reston, Virginia. The USGS also has major offices near Lakewood, Colorado, at the Denver Federal Center, and Menlo Park, California. The current motto of the USGS, in use since August 1997, is "science for a changing world". The agency's previous slogan, adopted on the occasion of its hundredt ... [...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] |
Gene L
In biology, the word gene (from , ; "...Wilhelm Johannsen coined the word gene to describe the Mendelian units of heredity..." meaning ''generation'' or ''birth'' or ''gender'') can have several different meanings. The Mendelian gene is a basic unit of heredity and the molecular gene is a sequence of nucleotides in DNA that is transcribed to produce a functional RNA. There are two types of molecular genes: protein-coding genes and noncoding genes. During gene expression, the DNA is first copied into RNA. The RNA can be directly functional or be the intermediate template for a protein that performs a function. The transmission of genes to an organism's offspring is the basis of the inheritance of phenotypic traits. These genes make up different DNA sequences called genotypes. Genotypes along with environmental and developmental factors determine what the phenotypes will be. Most biological traits are under the influence of polygenes (many different genes) as well as gene– ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Little America V
Little America was a series of Antarctic exploration bases from 1929 to 1958, located on the Ross Ice Shelf, south of the Bay of Whales. The coordinates are approximate. Little America I The first base in the series was established in January 1929 by Richard Byrd, and was abandoned in 1930. This was where the film ''With Byrd at the South Pole'' (1930), about Byrd's trip to the South Pole, was filmed. Little America II Little America II was established in 1934, some above the site of the original base, with some of the original base accessed via tunnel. This base was briefly set adrift in 1934, but the iceberg fused to the main glacier. During the 1934–1935 expedition, many souvenir letters were sent from Little America, using a commemorative postage stamp issued by the U.S. government. The souvenir cancellation operations were conducted under extremely difficult conditions. Little America established the first successful radio broadcasting from Antarctica, making r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
