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Chegitun
The Chegitun (russian: Чегитун) is a river located in the Chukotka Peninsula in Far East Siberia. It is the easternmost river flowing into the Chukchi Sea from the Siberian side, which makes it the easternmost significant river of the Eurasian continent. It is long, and has a drainage basin of . The name of the river is based in the Eskimo–Aleut term ''Sahtuk'', meaning 'straightened', which became ''Чегтун'' in the Chukchi language. The waters of the river are an important spawning ground for Arctic char, Taranets char, Siberian salmon, Pink salmon, Chum salmon, Sockeye salmon and Dolly Varden trout are common in its waters. Geography The Chegitun flows in a roughly northeastern direction and crosses the Arctic circle a few miles before it meets the sea in a 500 m wide estuary. Close to its mouth there is the small abandoned village of Chegitun; the villages of Inchoun and Uelen are located not far down the coast. The Chegitun is frozen from October to June. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chukotka Autonomous Okrug
Chukotka (russian: Чуко́тка), officially the Chukotka Autonomous Okrug,, ''Čukotkakèn avtonomnykèn okrug'', is the easternmost federal subjects of Russia, federal subject of Russia. It is an autonomous okrug situated in the Russian Far East, and shares a border with the Sakha, Sakha Republic to the west, Magadan Oblast to the south-west, and Kamchatka Krai to the south. Anadyr (town), Anadyr is the largest types of inhabited localities in Russia, town and the administrative center, capital, and the easternmost settlement to have town status in Russia. Chukotka is primarily populated by ethnic Russians, Chukchi people, Chukchi, and other Indigenous peoples of Siberia, indigenous peoples. It is the only autonomous okrug in Russia that is not included in, or subordinate to, another federal subject, having separated from Magadan Oblast in 1992. It is home to Lake Elgygytgyn, an impact crater lake, and Anyuyskiy, an extinct volcano. The village of Uelen is the easternmos ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chukchi Sea
Chukchi Sea ( rus, Чуко́тское мо́ре, r=Chukotskoye more, p=tɕʊˈkotskəjə ˈmorʲɪ), sometimes referred to as the Chuuk Sea, Chukotsk Sea or the Sea of Chukotsk, is a marginal sea of the Arctic Ocean. It is bounded on the west by the Long Strait, off Wrangel Island, and in the east by Point Barrow, Alaska, beyond which lies the Beaufort Sea. The Bering Strait forms its southernmost limit and connects it to the Bering Sea and the Pacific Ocean. The principal port on the Chukchi Sea is Uelen in Russia. The International Date Line crosses the Chukchi Sea from northwest to southeast. It is displaced eastwards to avoid Wrangel Island as well as the Chukotka Autonomous Okrug on the Russian mainland. Geography The sea has an approximate area of and is only navigable about four months of the year. The main geological feature of the Chukchi Sea bottom is the Hope Basin, which is bound to the northeast by the Herald Arch. Depths less than occupy 56% of the total ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chegitun, Chukotka Autonomous Okrug
Chukotsky District (russian: Чуко́тский райо́н, ''Čukótskiy rayón''; Chukchi: , ''Čukotkakèn rajon'') is an administrativeLaw #33-OZ and municipalLaw #47-OZ district (raion), one of the six in Chukotka Autonomous Okrug, Russia. It is the easternmost district of the autonomous okrug and Russia, and the closest part of Russia to the United States. It borders with the Chukchi Sea in the north, the Bering Sea in the east, Providensky District in the south, and the Kolyuchinskaya Bay in the west. The area of the district is .Official website of Chukotsky DistrictMap of the district Its administrative center is the rural locality (a '' selo'') of Lavrentiya. Population: The population of Lavrentiya accounts for 30.2% of the district's total population. The district is populated mainly by indigenous peoples, the majority being either Chukchi or Yupik. The sparse nature of the population means that this is the only district in the autonomous okrug without any urba ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Salvelinus Taranetzi
''Salvelinus taranetzi'', also known as the ''Taranets char'',Alexander G. Osinov, Anna L. Senchukova, Nikolai S. Mugue, Sergei D. Pavlov, Igor A. Chereshnev (2015Speciation and genetic divergence of three species of charr from ancient Lake El'gygytgyn (Chukotka) and their phylogenetic relationships with other representatives of the genus ''Salvelinus''''Biological Journal of the Linnean Society'' 116, 63–85. is a species of salmonid fish native to Chukotka, Northeast Russia. Distribution This char lives in glacier lakes and river basins of Chukotka, Russian Far East, where it may adapt to extremely severe conditions. It may be found both in fresh and brackish waters between the Kolyma River and the Bering Sea, including the Rauchua (Bilibino District), the Chaun Bay rivers ( Chaun District), Pegtymel River, Amguema River, Vankarem River and Kymyneyveem River (Iultinsky District), as well as the rivers of the Kolyuchinskaya Bay, Chegitun River, Uttyveem River and Koolen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Salvelinus Malma
The Dolly Varden trout (''Salvelinus malma'') is a species of salmonid fish native to cold-water tributaries of the Pacific Ocean in Asia and North America. It belongs to the genus ''Salvelinus'', or true chars, which includes 51 recognized species, the most prominent being the brook, lake and bull trout, as well as Arctic char. Although many populations are semi-anadromous, fluvial and lacustrine populations occur throughout its range. It is considered by taxonomists as part of the ''Salvelinus alpinus'' or Arctic char complex, as many populations of bull trout, Dolly Varden trout and Arctic char overlap. Taxonomy The scientific name of the Dolly Varden is ''Salvelinus malma''. The species was originally named by German naturalist and taxonomist Johann Julius Walbaum in 1792 based on type specimens from the Kamchatka Peninsula in Siberia. The name ''malma'' was based on Russian , the local colloquial name for the fish. The Dolly Varden trout is considered part of the ''S. al ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Operational Navigation Chart C-8, 2nd 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] |
Beringia National Park
Beringia National Park (russian: Берингия) is on the eastern tip of Chukotka Autonomous Okrug ("Chukotka"), the most northeastern region of Russia. It is on the western (i.e., Asian) side of the Bering Strait. Overview Until 11,000 BCE, the territory of the park was connected by a land bridge – known as "Beringia" – to North America. On the eastern side, in Alaska, is the Bering Land Bridge National Preserve, operated by the US National Park Service. There have been talks between the US and Russia about joining the two parks into a cross-border "international park", but as yet nothing has been formalized. Most of the sparse population in the area are the indigenous Chukchi people or Yupik peoples. The park was formalized as a National Park in 2013. The park is spread over two districts on the Chukchi Peninsula: Providensky District to the south, and Chukotsky District to the north. The topography is maritime highland subarctic tundra. The mountains are medium ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Uelen
Uelen (russian: Уэлéн; Chukchi: , ''Uvèlèn''; Siberian Yupik: Улыӄ, ''Ulyḳ''; Naukan Yupik: Олыӄ, ''Oleq''; also known as Whalen in older English-language sources and Ugelen on USCGS charts) is a rural locality (a '' selo'') in Chukotsky District, just south of the Arctic Circle in Chukotka Autonomous Okrug in the Russian Far East. As of the 2010 Census, its population was 720. Located near Cape Dezhnev where the Bering Sea meets the Chukchi Sea, it is the easternmost settlement in Russia and the whole of Asia. It is located in the Western Hemisphere, but the International Date Line curves around it, so it remains in a Russian time zone ( UTC+12:00). Uelen is also the closest Asian settlement to North America. It is on the northeast corner of the Uelen Lagoon, a roughly east-west lagoon separated from the ocean by a sandspit. Municipally, Uelen is subordinated to Chukotsky Municipal District and is incorporated as Uelen Rural Settlement. History Ori ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Inchoun
Inchoun (russian: Инчоун, Chukchi: ,Inchoun Information , Beringia Nature Park Website. Retrieved 12 April 2012 ''I’nčuvin''; : Инсиг’вик) is a (a '' selo'') in of |
Estuary
An estuary is a partially enclosed coastal body of brackish water with one or more rivers or streams flowing into it, and with a free connection to the open sea. Estuaries form a transition zone between river environments and maritime environments and are an example of an ecotone. Estuaries are subject both to marine influences such as tides, waves, and the influx of saline water, and to fluvial influences such as flows of freshwater and sediment. The mixing of seawater and freshwater provides high levels of nutrients both in the water column and in sediment, making estuaries among the most productive natural habitats in the world. Most existing estuaries formed during the Holocene epoch with the flooding of river-eroded or glacially scoured valleys when the sea level began to rise about 10,000–12,000 years ago. Estuaries are typically classified according to their geomorphological features or to water-circulation patterns. They can have many different names, such as bays, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arctic Circle
The Arctic Circle is one of the two polar circles, and the most northerly of the five major circles of latitude as shown on maps of Earth. Its southern equivalent is the Antarctic Circle. The Arctic Circle marks the southernmost latitude at which, on the December solstice, the shortest day of the year in the northern hemisphere, the sun will not rise all day, and on the June solstice, the longest day of the year in the northern hemisphere, the sun will not set. These phenomena are referred to as polar night and midnight sun respectively, and the further north one progresses, the more pronounced these effects become. For example, in the Russian port city of Murmansk, three degrees above the Arctic Circle, the sun does not rise for 40 successive days in midwinter. The position of the Arctic Circle is not fixed and currently runs north of the Equator. Its latitude depends on the Earth's axial tilt, which fluctuates within a margin of more than 2° over a 41,000-year period, o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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