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Arctic Research Laboratory Ice Station
Fletcher's Ice Island or T-3 was an iceberg discovered by U.S. Air Force Colonel Joseph O. Fletcher. Between 1952 and 1978 it was used as a staffed scientific drift station that included huts, a power plant, and a runway for wheeled aircraft.Fletchers Ice Island – KF3AA Hamgallery.com. Retrieved on 2011-02-23. The iceberg was a thick tabular sheet of glacial ice that drifted throughout the central Arctic Ocean in a clockwise direction. First inhabited in 1952 as an arctic weather report station, it was abandoned in 1954 but reinhabited on two subsequent occasions. The station was inhabited mainly by scientists along with a few military crewmen and was resupplied during its existence primarily by military pla ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1972 Photo Of Wrecked Usaf C-47 Aircraft On T3
Year 197 ( CXCVII) was a common year starting on Saturday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Magius and Rufinus (or, less frequently, year 950 ''Ab urbe condita''). The denomination 197 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years. Events By place Roman Empire * February 19 – Battle of Lugdunum: Emperor Septimius Severus defeats the self-proclaimed emperor Clodius Albinus at Lugdunum (modern Lyon). Albinus commits suicide; legionaries sack the town. * Septimius Severus returns to Rome and has about 30 of Albinus's supporters in the Senate executed. After his victory he declares himself the adopted son of the late Marcus Aurelius. * Septimius Severus forms new naval units, manning all the triremes in Italy with heavily armed troops for war in the East. His soldiers embark on an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydrography
Hydrography is the branch of applied sciences which deals with the measurement and description of the physical features of oceans, seas, coastal areas, lakes and rivers, as well as with the prediction of their change over time, for the primary purpose of safety of navigation and in support of all other marine activities, including economic development, security and defense, scientific research, and environmental protection. History The origins of hydrography lay in the making of charts to aid navigation, by individual mariners as they navigated into new waters. These were usually the private property, even closely held secrets, of individuals who used them for commercial or military advantage. As transoceanic trade and exploration increased, hydrographic surveys started to be carried out as an exercise in their own right, and the commissioning of surveys was increasingly done by governments and special hydrographic offices. National organizations, particularly navies, realized ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
USS Burton Island (AGB-1)
USS ''Burton Island'' (AG-88) was a United States Navy Wind-class icebreaker that was later recommissioned in the United States Coast Guard as the USCGC ''Burton Island'' (WAGB-283). She was named after an island near the coast of Delaware. Construction ''Burton Island'' was one of the icebreakers designed by Lt Cdr Edward Thiele and Gibbs & Cox of New York, who modeled them after plans for European icebreakers he obtained before the start of World War II. She was the sixth of seven completed ships of the Wind-class of icebreakers operated by the United States Coast Guard. Her keel was laid on 15 March 1946 at Western Pipe and Steel Company shipyards in San Pedro, California, she was launched on 30 April 1946, and commissioned on 28 December 1946 with Commander Gerald L. Ketchum in command. Her hull was of unprecedented strength and structural integrity, with a relatively short length in proportion to the great power developed, a cut away forefoot, rounded bottom, and fore, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wainwright, Alaska
Wainwright (; ''Ulġuniq'' in Iñupiaq), also known as Ulguniq or Kuuk, is a city in North Slope Borough, Alaska, United States. At the 2010 census the population was 556, making it the third largest city in the North Slope Borough, up from 546 in 2000. The community was named after Wainwright Lagoon, which in turn was named after Lt. John Wainwright, an officer under Capt. F.W. Beechey, who were the first non-native people to travel to the lagoon in 1826. An unincorporated area known as Wainwright Inlet by 1890, Wainwright was founded as an incorporated municipality in 1904. Geography and climate Wainwright is located on the Chukchi Sea about southwest of Utqiaġvik. According to the United States Census Bureau, the city has a total area of , of which, of it is land and of it (58.63%) is water. Wainwright has a dry-winter Arctic climate (Köppen ETw) with temperatures ranging from . There is little precipitation, mostly snow; however, the dry winters make the annual sno ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alaska
Alaska ( ; russian: Аляска, Alyaska; ale, Alax̂sxax̂; ; ems, Alas'kaaq; Yup'ik: ''Alaskaq''; tli, Anáaski) is a state located in the Western United States on the northwest extremity of North America. A semi-exclave of the U.S., it borders the Canadian province of British Columbia and the Yukon territory to the east; it also shares a maritime border with the Russian Federation's Chukotka Autonomous Okrug to the west, just across the Bering Strait. To the north are the Chukchi and Beaufort Seas of the Arctic Ocean, while the Pacific Ocean lies to the south and southwest. Alaska is by far the largest U.S. state by area, comprising more total area than the next three largest states (Texas, California, and Montana) combined. It represents the seventh-largest subnational division in the world. It is the third-least populous and the most sparsely populated state, but by far the continent's most populous territory located mostly north of the 60th parallel, with ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Northeast Air Command
The Northeast Air Command (NEAC) was a short-lived organization in the United States Air Force tasked with the operation and defense of air bases in Greenland, Labrador and Newfoundland. It was formed in 1950 from the facilities of the United States established during World War II in Northeast Canada, Newfoundland and Greenland. It was discontinued in 1957. History Origins The Northeast Air Command (NEAC) was originally formed from the World War II facilities of the United States Army Newfoundland Base Command (NBC), which formed on 15 January 1941. The NBC was formed to command bases in Newfoundland which came under United States control as a result of the 1940 Destroyers for Bases Agreement; the 1941 US-Danish Agreement on Greenland, and the development by Air Transport Command of airfields in the Canadian Northwest Territories and Greenland to support aircraft ferry routes to Great Britain. Newfoundland Base Command In the summer of 1940, President Roosevelt began negotiatin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
C-47
The Douglas C-47 Skytrain or Dakota (Royal Air Force, RAF, Royal Australian Air Force, RAAF, Royal Canadian Air Force, RCAF, Royal New Zealand Air Force, RNZAF, and South African Air Force, SAAF designation) is a airlift, military transport aircraft developed from the civilian Douglas DC-3 airliner. It was used extensively by the Allies of World War II, Allies during World War II and remained in front-line service with various military operators for many years.Parker 2013, pp. 13, 35, 37, 39, 45-47. Design and development The C-47 differed from the civilian DC-3 by way of numerous modifications, including being fitted with a cargo door, hoist attachment and strengthened floor - along with a shortened tail cone for Military glider, glider-towing shackles, and an Astrodome (aeronautics), astrodome in the cabin roof.Wilson, Stewart. ''Aircraft of WWII''. Fyshwick, ACT, Australia: Aerospace Publications Pty Ltd., 1998. . During World War II, the armed forces of many countries used ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Twilight
Twilight is light produced by sunlight scattering in the upper atmosphere, when the Sun is below the horizon, which illuminates the lower atmosphere and the Earth's surface. The word twilight can also refer to the periods of time when this illumination occurs. The lower the Sun is beneath the horizon, the dimmer the twilight (other factors such as atmospheric conditions being equal). When the Sun reaches 18° below the horizon, the twilight's brightness is nearly zero, and evening twilight becomes nighttime. When the Sun again reaches 18° below the horizon, nighttime becomes morning twilight. Owing to its distinctive quality, primarily the absence of shadows and the appearance of objects silhouetted against the lit sky, twilight has long been popular with photographers and painters, who often refer to it as the blue hour, after the French expression ''l'heure bleue''. By analogy with evening twilight, the word ''twilight'' is also sometimes used metaphorically, to imply tha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Celestial Navigation
Celestial navigation, also known as astronavigation, is the practice of position fixing using stars and other celestial bodies that enables a navigator to accurately determine their actual current physical position in space (or on the surface of the Earth) without having to rely solely on estimated positional calculations, commonly known as "dead reckoning", made in the absence of satellite navigation or other similar modern electronic or digital positioning means. Celestial navigation uses "sights", or timed angular measurements, taken typically between a celestial body (e.g. the Sun, the Moon, a planet, or a star) and the visible horizon. Celestial navigation can also take advantage of measurements between celestial bodies without reference to the Earth horizon, such as when the Moon and other selected bodies are used in the practice called "lunars" or lunar distance method, used for determining precise time when time is unknown. Celestial navigation by taking sights of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dead Reckoning
In navigation, dead reckoning is the process of calculating current position of some moving object by using a previously determined position, or fix, and then incorporating estimates of speed, heading direction, and course over elapsed time. The corresponding term in biology, used to describe the processes by which animals update their estimates of position or heading, is path integration. Dead reckoning is subject to cumulative errors. Advances in navigational aids that give accurate information on position, in particular satellite navigation using the Global Positioning System, have made simple dead reckoning by humans obsolete for most purposes. However, inertial navigation systems, which provide very accurate directional information, use dead reckoning and are very widely applied. Etymology The term "dead reckoning" was not originally used to abbreviate "deduced reckoning," nor is it a misspelling of the term "ded reckoning." The use of "ded" or "deduced reckoning" ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Greenland
Greenland ( kl, Kalaallit Nunaat, ; da, Grønland, ) is an island country in North America that is part of the Kingdom of Denmark. It is located between the Arctic and Atlantic oceans, east of the Canadian Arctic Archipelago. Greenland is the world's largest island. It is one of three constituent countries that form the Kingdom of Denmark, along with Denmark and the Faroe Islands; the citizens of these countries are all citizens of Denmark and the European Union. Greenland's capital is Nuuk. Though a part of the continent of North America, Greenland has been politically and culturally associated with Europe (specifically Norway and Denmark, the colonial powers) for more than a millennium, beginning in 986.The Fate of Greenland's Vikings , by Dale Mackenzie Brown, ''Archaeological Institute of America'', ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thule Air Base
Thule Air Base (pronounced or , kl, Qaanaaq Mitarfik, da, Thule Lufthavn), or Thule Air Base/Pituffik Airport , is the United States Space Force's northernmost base, and the northernmost installation of the U.S. Armed Forces, located north of the Arctic Circle and from the North Pole on the northwest coast of the island of Greenland. Thule's arctic environment includes icebergs in North Star Bay, two islands ( Saunders Island and Wolstenholme Island), a polar ice sheet, and Wolstenholme Fjord – the only place on Earth where four active glaciers join together. The base is home to a substantial portion of the global network of missile warning sensors of Space Delta 4, and space surveillance and space control sensors of Space Delta 2, providing space awareness and advanced missile detection capabilities to North American Aerospace Defense Command (NORAD), the United States Space Force, and joint partners. Thule Air Base is also home to the 821st Air Base Group and is respons ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
