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Mount Stewart (Antarctica)
Cooper Snowfield () is a snowfield with an area of about in the Churchill Mountains of Antarctica. Location The snowfield rises to over and is nearly encircled by ridges connecting Mount Field, Mount Durnford, and Mount Liard. It was named after Alan K. Cooper, a marine geophysicist with the United States Geological Survey, Menlo Park, California, who was involved in drilling and seismic studies of the Antarctic continental margin for deriving paleoenvironments and ice sheet history, 1984–2002. Surrounding features The snowfield is bordered by the Skinner Saddle to the east. Surrounding mountains clockwise from the southeast are Mount Liard, Mount Stewart, Mount Durnford, Mount Field, Mount Hubble. Mount Liard . A peak east of Mount Durnford. It rises to on the ridge south of Cooper Snowfield. The peak was named by the Advisory Committee on Antarctic Names after Theodore J. Liard, Jr. (1918–2002), a geographer with the Department of Interior and the Department of De ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Snow Field
A snow field, snowfield or neve is an accumulation of permanent snow and ice, typically found above the snow line, normally in mountainous and glacial terrain. Glaciers originate in snowfields. The lower end of a glacier is usually free from snow and névé in summer. In the upper end and above the upper boundary of a glacier, the snow field is an ice field An ice field (also spelled icefield) is a mass of interconnected valley glaciers (also called mountain glaciers or alpine glaciers) on a mountain mass with protruding rock ridges or summits. They are often found in the colder climates and highe ... covered with snow. The glacier upper boundary, where it emerges from under a snow field, is ill-defined because of gradual transition.Thomas Chrowder Chamberlin, Rollin D. Salisbury (1904) "Geology"p. 258 References Bodies of ice Landforms {{glaciology-stub it:Formazioni nevose perenni#Nevaio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States Department Of Defense
The United States Department of Defense (DoD, USDOD or DOD) is an executive branch department of the federal government charged with coordinating and supervising all agencies and functions of the government directly related to national security and the United States Armed Forces. The DoD is the largest employer in the world, with over 1.34 million active-duty service members (soldiers, marines, sailors, airmen, and guardians) as of June 2022. The DoD also maintains over 778,000 National Guard and reservists, and over 747,000 civilians bringing the total to over 2.87 million employees. Headquartered at the Pentagon in Arlington, Virginia, just outside Washington, D.C., the DoD's stated mission is to provide "the military forces needed to deter war and ensure our nation's security". The Department of Defense is headed by the secretary of defense, a cabinet-level head who reports directly to the president of the United States. Beneath the Department of Defense are th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Galaxy
A galaxy is a system of stars, stellar remnants, interstellar gas, dust, dark matter, bound together by gravity. The word is derived from the Greek ' (), literally 'milky', a reference to the Milky Way galaxy that contains the Solar System. Galaxies, averaging an estimated 100 million stars, range in size from dwarfs with less than a hundred million stars, to the largest galaxies known – supergiants with one hundred trillion stars, each orbiting its galaxy's center of mass. Most of the mass in a typical galaxy is in the form of dark matter, with only a few percent of that mass visible in the form of stars and nebulae. Supermassive black holes are a common feature at the centres of galaxies. Galaxies are categorized according to their visual morphology as elliptical, spiral, or irregular. Many are thought to have supermassive black holes at their centers. The Milky Way's central black hole, known as Sagittarius A*, has a mass four million times greater than the Sun. As o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mount Wilson Observatory
The Mount Wilson Observatory (MWO) is an astronomical observatory in Los Angeles County, California, United States. The MWO is located on Mount Wilson, a peak in the San Gabriel Mountains near Pasadena, northeast of Los Angeles. The observatory contains two historically important telescopes: the Hooker telescope, which was the largest aperture telescope in the world from its completion in 1917 to 1949, and the 60-inch telescope which was the largest operational telescope in the world when it was completed in 1908. It also contains the Snow solar telescope completed in 1905, the 60 foot (18 m) solar tower completed in 1908, the 150 foot (46 m) solar tower completed in 1912, and the CHARA array, built by Georgia State University, which became fully operational in 2004 and was the largest optical interferometer in the world at its completion. Due to the inversion layer that traps warm air and smog over Los Angeles, Mount Wilson has steadier air than any other location in Nor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carnegie Institution Of Washington
The Carnegie Institution of Washington (the organization's legal name), known also for public purposes as the Carnegie Institution for Science (CIS), is an organization in the United States established to fund and perform scientific research. The institution is headquartered in Washington, D.C. , the Institution's endowment was valued at $926.9 million. In 2018 the expenses for scientific programs and administration were $96.6 million. Eric Isaacs is president of the institution. Name More than 20 independent organizations were established through the philanthropy of Andrew Carnegie and now feature his surname. They perform work involving topics as diverse as art, education, international affairs, world peace, and scientific research. In 2007, the Carnegie Institution of Washington adopted the public name "Carnegie Institution for Science" to distinguish itself from other organizations established by and named for Andrew Carnegie. The Institution remains officially and legall ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Edwin Hubble
Edwin Powell Hubble (November 20, 1889 – September 28, 1953) was an Americans, American astronomer. He played a crucial role in establishing the fields of extragalactic astronomy and observational cosmology. Hubble proved that many objects previously thought to be clouds of dust and gas and classified as "nebulae" were actually Galaxy, galaxies beyond the Milky Way. He used the strong direct period-luminosity relation, relationship between a classical Cepheid variable's luminosity and periodic function, pulsation period (discovered in 1908 by Henrietta Swan Leavitt) for scaling cosmic distance ladder, galactic and extragalactic distances. Hubble provided evidence that the recessional velocity of a galaxy increases with its distance from the Earth, a property now known as "Hubble's law", although it had been proposed two years earlier by Georges Lemaître. The Hubble law implies that the universe is expanding. A decade before, the American astronomer Vesto Slipher had provid ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
John Durnford
Admiral (Royal Navy), Admiral Sir John Durnford (6 February 1849 – 13 June 1914) was a Royal Navy officer who went on to be Cape of Good Hope Station, Commander-in-Chief, Cape of Good Hope Station. Naval career Educated at Eton College and the Britannia Royal Naval College, Royal Naval College, Dartmouth, Durnford joined the Royal Navy in 1862 served in the Third Anglo-Burmese War of 1885 to 1886 for which he was mentioned in dispatches and awarded the Distinguished Service Order, DSO. Promoted to Captain (naval), Captain in 1888, he commanded the torpedo school HMS Vernon (shore establishment), HMS ''Vernon'' from 1895 to 1899. In October 1899 he was appointed in command of the pre-dreadnought battleship HMS Jupiter (1895), HMS ''Jupiter'', serving in the Channel Fleet, and in December the following year he was appointed to ''Algiers'' for the Medway steam reserve. Durnford became Fourth Sea Lord, Junior Naval Lord in February 1901 and was promoted to Rear admiral (Royal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Defense Mapping Agency
The National Geospatial-Intelligence Agency (NGA) is a combat support agency within the United States Department of Defense whose primary mission is collecting, analyzing, and distributing geospatial intelligence (GEOINT) in support of national security. Initially known as the National Imagery and Mapping Agency (NIMA) from 1996 to 2003, it is a member of the United States Intelligence Community. NGA headquarters, also known as NGA Campus East or NCE, is located at Fort Belvoir North Area in Springfield, Virginia. The agency also operates major facilities in the Greater St. Louis, St. Louis, Missouri area (referred to as NGA Campus West or NCW), as well as support and liaison offices worldwide. The NGA headquarters, at , is the third-largest government building in the Washington metropolitan area after The Pentagon and the Ronald Reagan Building and International Trade Center, Ronald Reagan Building. In addition to using GEOINT for U.S. military and intelligence efforts, NGA pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States Department Of The Interior
The United States Department of the Interior (DOI) is one of the executive departments of the U.S. federal government headquartered at the Main Interior Building, located at 1849 C Street NW in Washington, D.C. It is responsible for the management and conservation of most federal lands and natural resources, and the administration of programs relating to Native Americans, Alaska Natives, Native Hawaiians, territorial affairs, and insular areas of the United States, as well as programs related to historic preservation. About 75% of federal public land is managed by the department, with most of the remainder managed by the Department of Agriculture's Forest Service. The department was created on March 3, 1849. The department is headed by the secretary of the interior, who reports directly to the president of the United States and is a member of the president's Cabinet. The current secretary is Deb Haaland. Despite its name, the Department of the Interior has a different ro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Churchill Mountains
The Churchill Mountains are a mountain range group of the Transantarctic Mountains System, located in the Ross Dependency region of Antarctica. They border on the western side of the Ross Ice Shelf, between Byrd Glacier and Nimrod Glacier. Several of the range's highest summits, including Mounts Egerton, Field, Nares, Wharton, and Albert Markham were first seen and named by the Discovery Expedition of 1901–1904 (aka: British National Antarctic Expedition), under Robert Falcon Scott The mountains were mapped in detail by the USGS from Tellurometer surveys during 1960–61, and by United States Navy air photos in 1960. They were named by the US-ACAN for Sir Winston Churchill. Mountains and peaks ;Mount Albert Markham Mount Albert Markham is a striking flat-topped mountain, standing midway between Mount Nares and Pyramid Mountain. Discovered by the Discovery Expedition and named for Admiral Sir Albert Hastings Markham, a member of the Ship Committee for the expedition. ;Mo ... [...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] |
Skinner Saddle
The Darley Hills () are a range of high, ice-covered coastal hills in the Churchill Mountains, Antarctica. Location The Darley Hills overlook the Ross Ice Shelf, and trend north–south for about between Cape Douglas and Cape Parr. To the west, they are bounded by the Skinner Saddle in the north, from which Nursery Glacier flows south and then east into the Ross Ice Shelf. Name The hills were named by the Advisory Committee on Antarctic Names for James M. Darley, chief cartographer of the National Geographic Society, 1940–63, under whose direction many important maps of Antarctica were published. Features Geographical features from north to south include: Skinner Saddle . A high, broad, snow-covered saddle between the northern part of Darley Hills and that portion of Churchill Mountains eastward of Mount Durnford. Mapped by the Northern Party of NZGSAE (1960-61) and named for D.N. Skinner, geologist with the party. Riddiford Nunatak ) A small but conspicuous nunatak ( ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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