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Peary Channel (Greenland)
The Peary Channel ( da, Peary-kanal) was a hypothetical sound or marine channel running from east to west separating Peary Land in northernmost Greenland from the mainland further south. The assumed existence of this channel and other errors in Peary's maps reportedly caused the tragic loss of the leading team of the Denmark expedition to Greenland's Northeast Coast 1906–1908. Geography Robert Peary based his mapping of the area on observations he made in 1892 from Navy Cliff, located north of the Academy Glacier. From his perspective the channel allegedly connected the head of Independence Fjord in the east with the heads of Nordenskiöld Fjord and a parallel and misplaced "Chipp Inlet" in the west. There is a Chipp Sound that separates Sverdrup Island from smaller Elison Island, but it is located at the other end of Nordenskiöld Fjord, beyond its mouth. In Peary's map Independence Fjord was merely a short bay and further to the east Peary had drawn the coast of hypothetic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Robert Peary
Robert Edwin Peary Sr. (; May 6, 1856 – February 20, 1920) was an American explorer and officer in the United States Navy who made several expeditions to the Arctic in the late 19th and early 20th centuries. He is best known for, in April 1909, leading an expedition that claimed to be the first to have reached the geographic North Pole. Explorer Matthew Henson, part of the expedition, is thought to have reached what they believed to be the North Pole narrowly before Peary. Peary was born in Cresson, Pennsylvania, but, following his father's death at a young age, was raised in Portland, Maine. He attended Bowdoin College, then joined the United States Coast and Geodetic Survey as a draftsman. He enlisted in the navy in 1881 as a civil engineer. In 1885, he was made chief of surveying for the Nicaragua Canal, which was never built. He visited the Arctic for the first time in 1886, making an unsuccessful attempt to cross Greenland by dogsled. In the Peary expedition to Green ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Operational Navigation Chart A-5, 3rd Edition
An operational definition specifies concrete, replicable procedures designed to represent a construct. In the words of American psychologist S.S. Stevens (1935), "An operation is the performance which we execute in order to make known a concept." For example, an operational definition of "fear" (the construct) often includes measurable physiologic responses that occur in response to a perceived threat. Thus, "fear" might be operationally defined as specified changes in heart rate, galvanic skin response, pupil dilation, and blood pressure. Overview An operational definition is designed to model or represent a concept or theoretical definition, also known as a construct. Scientists should describe the operations (procedures, actions, or processes) that define the concept with enough specificity such that other investigators can replicate their research. Operational definitions are also used to define system states in terms of a specific, publicly accessible process of preparation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Error
An error (from the Latin ''error'', meaning "wandering") is an action which is inaccurate or incorrect. In some usages, an error is synonymous with a mistake. The etymology derives from the Latin term 'errare', meaning 'to stray'. In statistics, "error" refers to the difference between the value which has been computed and the correct value. An error could result in failure or in a deviation from the intended performance or behavior. Human behavior One reference differentiates between "error" and "mistake" as follows: In human behavior the norms or expectations for behavior or its consequences can be derived from the intention of the actor or from the expectations of other individuals or from a social grouping or from social norms. (See deviance.) Gaffes and faux pas can be labels for certain instances of this kind of error. More serious departures from social norms carry labels such as misbehavior and labels from the legal system, such as misdemeanor and crime. Departures ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Straits Of Greenland
A strait is an oceanic landform connecting two seas or two other large areas of water. The surface water generally flows at the same elevation on both sides and through the strait in either direction. Most commonly, it is a narrow ocean channel that lies between two land masses. Some straits are not navigable, for example because they are either too narrow or too shallow, or because of an unnavigable reef or archipelago. Straits are also known to be loci for sediment accumulation. Usually, sand-size deposits occur on both the two opposite strait exits, forming subaqueous fans or deltas. Terminology The terms ''channel'', ''pass'', or ''passage'' can be synonymous and used interchangeably with ''strait'', although each is sometimes differentiated with varying senses. In Scotland, ''firth'' or ''Kyle'' are also sometimes used as synonyms for strait. Many straits are economically important. Straits can be important shipping routes and wars have been fought for control of them. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sounds Of North America
In physics, sound is a vibration that propagates as an acoustic wave, through a transmission medium such as a gas, liquid or solid. In human physiology and psychology, sound is the ''reception'' of such waves and their ''perception'' by the brain. Only acoustic waves that have frequencies lying between about 20 Hz and 20 kHz, the audio frequency range, elicit an auditory percept in humans. In air at atmospheric pressure, these represent sound waves with wavelengths of to . Sound waves above 20 kHz are known as ultrasound and are not audible to humans. Sound waves below 20 Hz are known as infrasound. Different animal species have varying hearing ranges. Acoustics Acoustics is the interdisciplinary science that deals with the study of mechanical waves in gasses, liquids, and solids including vibration, sound, ultrasound, and infrasound. A scientist who works in the field of acoustics is an ''acoustician'', while someone working in the field of acoustical e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
19th Century In The Arctic
19 (nineteen) is the natural number following 18 and preceding 20. It is a prime number. Mathematics 19 is the eighth prime number, and forms a sexy prime with 13, a twin prime with 17, and a cousin prime with 23. It is the third full reptend prime, the fifth central trinomial coefficient, and the seventh Mersenne prime exponent. It is also the second Keith number, and more specifically the first Keith prime. * 19 is the maximum number of fourth powers needed to sum up to any natural number, and in the context of Waring's problem, 19 is the fourth value of g(k). * The sum of the squares of the first 19 primes is divisible by 19. *19 is the sixth Heegner number. 67 and 163, respectively the 19th and 38th prime numbers, are the two largest Heegner numbers, of nine total. * 19 is the third centered triangular number as well as the third centered hexagonal number. : The 19th triangular number is 190, equivalently the sum of the first 19 non-zero integers, that is also t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
First Thule Expedition
First or 1st is the ordinal form of the number one (#1). First or 1st may also refer to: *World record, specifically the first instance of a particular achievement Arts and media Music * 1$T, American rapper, singer-songwriter, DJ, and record producer Albums * ''1st'' (album), a 1983 album by Streets * ''1st'' (Rasmus EP), a 1995 EP by The Rasmus, frequently identified as a single * '' 1ST'', a 2021 album by SixTones * ''First'' (Baroness EP), an EP by Baroness * ''First'' (Ferlyn G EP), an EP by Ferlyn G * ''First'' (David Gates album), an album by David Gates * ''First'' (O'Bryan album), an album by O'Bryan * ''First'' (Raymond Lam album), an album by Raymond Lam * ''First'', an album by Denise Ho Songs * "First" (Cold War Kids song), a song by Cold War Kids * "First" (Lindsay Lohan song), a song by Lindsay Lohan * "First", a song by Everglow from ''Last Melody'' * "First", a song by Lauren Daigle * "First", a song by Niki & Gabi * "First", a song by Jonas Broth ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Knud Rasmussen
Knud Johan Victor Rasmussen (; 7 June 1879 – 21 December 1933) was a Greenlandic–Danish polar explorer and anthropologist. He has been called the "father of Eskimology" (now often known as Inuit Studies or Greenlandic and Arctic Studies) and was the first European to cross the Northwest Passage via dog sled. He remains well known in Greenland, Denmark and among Canadian Inuit.Elizabeth Cruwys, 2003. Early years Rasmussen was born in Jakobshavn, Greenland, the son of a Danish missionary, the vicar Christian Rasmussen, and an Inuit–Danish mother, Lovise Rasmussen (née Fleischer). He had two siblings. Rasmussen spent his early years in Greenland among the Kalaallit where he learned to speak Kalaallisut, hunt, drive dog sleds and live in harsh Arctic conditions. "My playmates were native Greenlanders; from the earliest boyhood I played and worked with the hunters, so even the hardships of the most strenuous sledge-trips became pleasant routine for me." He was later ed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Danmark Fjord
Danmark Fjord (), also known as Denmark Sound, is a fjord in northeast Greenland. Administratively it belongs to the Northeast Greenland National Park. The fjord was explored and named after the expedition ship '' Danmark'' at the time of the ill-fated Denmark expedition 1906-1908 led by Ludvig Mylius-Erichsen, which mapped Greenland's northeastern coast between Cape Bridgman and Cape Bismarck. History In May 1907 Mylius-Erichsen entered the unknown Danmark Fjord with his three-dogsled exploration team, deeming it would be leading him to the Navy Cliff and the postulated Peary Channel, which in fact did not exist. The team, which included cartographer Niels Peter Høeg Hagen and dogsled expert Jørgen Brønlund, travelled southwestwards until the head of the fjord and, becoming aware that it was a dead end, they backtracked to the northeast. By the end of May Mylius-Erichsen's team was back again at the mouth of the fjord. As they met Johan Peter Koch's northern team at Cape ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alabama Expedition
''Two Against the Ice'' is a non-fiction book authored by Danish explorer Ejnar Mikkelsen. The book details the author's exploration into Greenland, a journey made with his compatriot Iver P. Iversen in 1910. The book was originally published in Danish (1955) and later translated into English by Maurice Michael (first published in 1957). Summary Mikkelsen recounts his round-trip 2,500 mile sledge journey from Shannon Island to Danmark Fjord. A task which soon became a battle for survival as rations ran low, and the sled dogs began to starve to death, or were intentionally shot in order to provide food for the other dogs. The two adventurers became so hungry that they began to hallucinate. In a notable moment that typifies the hunger pains that the men were suffering, Iversen no longer wished to carry his rifle out of a fear he may be compelled to shoot Mikkelsen. The purpose of their travels was to locate the maps and journals of previous explorer Mylius Erichsen of the ill- ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ejnar Mikkelsen
Ejnar Mikkelsen (December 23, 1880 – May 1, 1971) was a Danish polar explorer and author. He is most known for his expeditions to Greenland. Biography Mikkelsen was born in Vester Brønderslev, Jutland. He served in the Georg Carl Amdrup expedition to Christian IX Land, East Greenland (1900), and in the Baldwin-Ziegler North Pole Expedition to Franz Joseph Land (1900–02). With Ernest de Koven Leffingwell he organized the Anglo-American polar expedition which wintered off Flaxman Island, Alaska, in 1906–07. They lost their ship, but in a sledge journey over the ice they located the continental shelf of the Arctic Ocean, 65 miles (105 km) offshore, where in 2 miles (3 km) the sea increased from 50 meters (164 ft) to more than 690 meters (2264 ft) in depth.Mills, William James (2003"Mikkelsen, Ejnar (1880–1971)"''Exploring polar frontiers: a historical encyclopedia, Volume 1'' pp 426 ff, ABC-CLIO , Organizing an expedition to map out the northeast ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Georg Carl Amdrup
Vice Admiral Sir Georg Carl Amdrup (Copenhagen, Denmark, November 19, 1866 – Copenhagen, January 15, 1947), RN was a Danish naval officer, Vice Admiral and Greenland researcher. Career In 1884, Amdrup, of the Royal Danish Navy, was sent to Amassalik. After wintering, he explored the coast to the north, including an examination of the Kangerlussuaq Fjord, known until then only from Inuit reports. He mapped a large length of coastline while collecting many geological and ethnological finds. By July 1885, he reached Aggas Island (67° 22' North), the furthest north of this survey. Carlsbergfondet Expedition til Ost-Gronland Lieutenant Amdrup was the leader of a major Danish expedition in 1898-1900, the Carlsberg Foundation Expedition to East Greenland (Carlsbergfondet Expedition til Ost-Gronland). With him were botanist Christian Krause, ornithologist Knud Poulsen, and the sailors, A. Jakobsen and Soren P. Nielsen. They left Copenhagen on August 16, 1898, sailing from Copen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
