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Tokko (river)
The Tokko (russian: Токко) is a river in Yakutia, East Siberia, Russian Federation. It is the largest tributary of the Chara river in terms of length and area of its basin. The river is long and has a drainage basin of . It is navigable in its final stretch, from its confluence with the Chara. Tokko village is located by the river bank.Tokko / '':'' in 30 vols. / Ch. ed. A.M. Prokhorov. - 3rd ed. - M. Soviet Encyclopedia, 1969-1978. The Chara-Tokkinskaya group of deposits (Чара-Токкинская группа месторождений), the largest |
Udokan Range
The Udokan Range (russian: хребет Удокан) is a mountain range in Sakha Republic (Yakutia) and Zabaykalsky Krai, Russian Federation. The nearest town is Chara.Google Earth There is copper mining in the range at the Udokan mine, part of the Udokan Ore Region that includes the Kalar and Kodar ranges.Udokan Ore Region / '':'' in 30 vols. - Ch. ed. A.M. Prokhorov. - 3rd ed. - M. Soviet Encyclopedia, 1969-1978. A stretch of the passes through the range following the valley of the Khani river. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Common Dace
The common dace (''Leuciscus leuciscus'') is a species of freshwater and brackish water ray-finned fish from the family Cyprinidae which is native to Europe but which has been introduced to other parts of the world. It is a quarry species for coarse anglers. Description The common dace differs from other members in the genus ''Leuciscus'' found in Europe by its inferior mouth, slightly longer upper jaw which has the tip of the upper lip level with the centre line of the eye and the lack of an obvious snout. It has a yellowish iris and a body which is covered in large silvery scales, the lateral line having 49–52 scales. The anal fin has a concave margin and the caudal fin is forked. The dorsal fin has 2–3 spines and 7–9 soft rays while the anal fin has 3 spines and 8–9 soft rays. The maximum size attained is a total length of . Distribution The common dace is native to Europe and northern Asia where its occurs in the basins of the North Sea, Baltic Sea, White Sea and Bar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Rivers Of Russia
Russia can be divided into a European and an Asian part. The dividing line is generally considered to be the Ural Mountains. The European part is drained into the Arctic Ocean, Baltic Sea, Black Sea, and Caspian Sea. The Asian part is drained into the Arctic Ocean and the Pacific Ocean. Notable rivers of Russia in Europe are Volga (which is the longest river in Europe), Pechora, Don, Kama, Oka and the Northern Dvina, while several other rivers originate in Russia but flow into other countries, such as the Dnieper and the Western Dvina. In Asia, important rivers are the Ob, the Irtysh, the Yenisei, the Angara, the Lena, the Amur, the Yana, the Indigirka, and the Kolyma. In the list below, the rivers are grouped by the seas or oceans into which they flow. Rivers that flow into other rivers are ordered by the proximity of their point of confluence to the mouth of the main river, i.e., the lower in the list, the more upstream. There is an alphabetical list of rivers at the end of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Olekma
, image = Olyokma river.jpg , image_size = , image_caption = View of the river , pushpin_map = Russia Sakha Republic , pushpin_map_size = , pushpin_map_caption= Location in the Sakha Republic, Russia , source1_location = Muroy Range, Olyokma-Stanovik , source1_coordinates = , source1_elevation = , mouth_location = Lena , mouth_coordinates = , mouth_elevation = , progression = , subdivision_type1 = Country , subdivision_name1 = Yakutia, Russia , length = , discharge1_avg = , basin_size = The Olyokma (russian: Олёкма, , ; sah, Өлүөхүмэ, ) is a tributary of the Lena in eastern Siberia. The river gives its name to the Olyokma-Chara Plateau, located to the west of its western bank. History In the summer of 1631, Russian pioneer Pyotr Beketov entered the Olyokma during his first voyage down the Lena and in 1636 he founded the present-day ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polynya
A polynya () is an area of open water surrounded by sea ice. It is now used as a geographical term for an area of unfrozen seawater within otherwise contiguous pack ice or fast ice. It is a loanword from the Russian полынья (), which refers to a natural ice hole and was adopted in the 19th century by polar explorers to describe navigable portions of the sea. There are two main types of polynyas: coastal polynyas, which can be found year-round near the Antarctic and Arctic coasts and are mainly created by strong winds pushing the ice away from the coast, and mid-sea or open-ocean polynyas, which may be found more sporadically in the middle of ice pack in certain locations, especially around Antarctica. These locations are generally preconditioned by certain oceanic dynamics. One of the most famous mid-sea polynyas is the Weddell Polynya, also known as the Maud Rise Polynya, which occurs in the Lazarev Sea over the Maud Rise seamount. It was first spotted in September 197 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Meanders
A meander is one of a series of regular sinuous curves in the channel of a river or other watercourse. It is produced as a watercourse erodes the sediments of an outer, concave bank (cut bank) and deposits sediments on an inner, convex bank which is typically a point bar. The result of this coupled erosion and sedimentation is the formation of a sinuous course as the channel migrates back and forth across the axis of a floodplain. The zone within which a meandering stream periodically shifts its channel is known as a meander belt. It typically ranges from 15 to 18 times the width of the channel. Over time, meanders migrate downstream, sometimes in such a short time as to create civil engineering challenges for local municipalities attempting to maintain stable roads and bridges.Neuendorf, K.K.E., J.P. Mehl Jr., and J.A. Jackson, J.A., eds. (2005) ''Glossary of Geology'' (5th ed.). Alexandria, Virginia, American Geological Institute. 779 pp. Charlton, R., 2007. ''Fundamentals o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Floodplain
A floodplain or flood plain or bottomlands is an area of land adjacent to a river which stretches from the banks of its channel to the base of the enclosing valley walls, and which experiences flooding during periods of high discharge.Goudie, A. S., 2004, ''Encyclopedia of Geomorphology'', vol. 1. Routledge, New York. The soils usually consist of clays, silts, sands, and gravels deposited during floods. Because the regular flooding of floodplains can deposit nutrients and water, floodplains frequently have high soil fertility; some important agricultural regions, such as the Mississippi river basin and the Nile, rely heavily on the flood plains. Agricultural regions as well as urban areas have developed near or on floodplains to take advantage of the rich soil and fresh water. However, the risk of flooding has led to increasing efforts to control flooding. Formation Most floodplains are formed by deposition on the inside of river meanders and by overbank flow. Whereve ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rapids
Rapids are sections of a river where the river bed has a relatively steep gradient, causing an increase in water velocity and turbulence. Rapids are hydrological features between a ''run'' (a smoothly flowing part of a stream) and a ''cascade''. Rapids are characterized by the river becoming shallower with some rocks exposed above the flow surface. As flowing water splashes over and around the rocks, air bubbles become mixed in with it and portions of the surface acquire a white color, forming what is called "whitewater". Rapids occur where the bed material is highly resistant to the erosive power of the stream in comparison with the bed downstream of the rapids. Very young streams flowing across solid rock may be rapids for much of their length. Rapids cause water aeration of the stream or river, resulting in better water quality. Rapids are categorized in classes, generally running from I to VI. A Class 5 rapid may be categorized as Class 5.1-5.9. While Class I rapids are eas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
U-shaped Valley
U-shaped valleys, also called trough valleys or glacial troughs, are formed by the process of glaciation. They are characteristic of mountain glaciation in particular. They have a characteristic U shape in cross-section, with steep, straight sides and a flat or rounded bottom (by contrast, valleys carved by rivers tend to be V-shaped in cross-section). Glaciated valleys are formed when a glacier travels across and down a slope, carving the valley by the action of scouring. When the ice recedes or thaws, the valley remains, often littered with small boulders that were transported within the ice, called glacial till or glacial erratic. Examples of U-shaped valleys are found in mountainous regions throughout the world including the Andes, Alps, Caucasus Mountains, Himalaya, Rocky Mountains, New Zealand and the Scandinavian Mountains. They are found also in other major European mountains including the Carpathian Mountains, the Pyrenees, the Rila and Pirin mountains in Bulgaria, an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Olyokminsky District
Olyokminsky District (russian: Олёкминский улу́с; sah, Өлүөхүмэ улууһа, ''Ölüökhüme uluuha'') is an administrativeConstitution of the Sakha Republic and municipalLaw #172-Z #351-III district (raion, or ''ulus''), one of the thirty-four in the Sakha Republic, Russia. It is located in the southwest of the republic and borders with Verkhnevilyuysky District in the north, Gorny and Khangalassky Districts in the northeast, Aldansky District in the east, Neryungrinsky District in the southeast, Zabaykalsky Krai in the southwest, Irkutsk Oblast and Lensky District in the west, and with Suntarsky District in the northwest. The area of the district is .Registry of the Administrative-Territorial Divisions of the Sakha Republic Its administrative center is the town of Olyokminsk. Population: 27,563 ( 2002 Census); The population of Olyokminsk accounts for 35.4% of the district's total population. Geography The main rivers of the district include the L ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Olyokma-Chara Plateau
The Olyokma-Chara Plateau ( rus, Олёкмо-Чарское плоскогорье; sah, Өлүөхүмэ-Чаара хаптал хайалаах сир) is a mountainous area in the Sakha Republic and Irkutsk Oblast, Far Eastern Federal District, Russia.Google Earth A small section is in Kalarsky District, northernmost Zabaykalsky Krai. Charoite, a rare mineral, is found in the Murun Massif area of the plateau, rising between rivers Chara and Tokko. Geography The Olyokma-Chara Plateau is located to the south of the Lena, at the southwestern end of the Sakha Republic in Olyokminsky District, and the eastern end of Irkutsk Oblast, Bodaybinsky District. The plateau is bound by the Chara River, a left tributary of the Olyokma river to the west and the Olyokma, a left tributary of the Lena, to the east. The Tokko River, the largest tributary of the Chara, crosses the uplands from south to north. To the south rises the Udokan Range of the Stanovoy Highlands and to the north ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Google Earth
Google Earth is a computer program that renders a 3D computer graphics, 3D representation of Earth based primarily on satellite imagery. The program maps the Earth by superimposition, superimposing satellite images, aerial photography, and geographic information system, GIS data onto a 3D globe, allowing users to see cities and landscapes from various angles. Users can explore the globe by entering addresses and coordinates, or by using a Computer keyboard, keyboard or computer mouse, mouse. The program can also be downloaded on a smartphone or Tablet computer, tablet, using a touch screen or stylus to navigate. Users may use the program to add their own data using Keyhole Markup Language and upload them through various sources, such as forums or blogs. Google Earth is able to show various kinds of images overlaid on the surface of the earth and is also a Web Map Service client. In 2019, Google has revealed that Google Earth now covers more than 97 percent of the world, and has c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
