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Nidelva (Aust-Agder)
Nidelva is the main river in the Arendal drainage basin in Agder county, Norway. The long river begins at the confluence of two rivers: Nisserelva and Fyreselv. The confluence is located by the village of Haugsjåsund in Nissedal municipality in southern Vestfold og Telemark county. The river flows south into the Skagerrak at the city of Arendal. The watershed covers and has an average waterflow of at Rykene near the mouth. The highest waterflow ever recorded on the river was in the autumn of 1987. Watercourse The river flows through Nissedal in Vestfold og Telemark county briefly before entering Agder county. It then flows through Åmli municipality. The river Gjøv joins the Nidelva there. The large lake Nelaug is a man-made lake along the river that is used for power generation. It continues through Froland municipality and then Arendal municipality. For a while, the river forms the border between Grimstad and Arendal municipalities. The river empties into the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trondheim
Trondheim ( , , ; sma, Tråante), historically Kaupangen, Nidaros and Trondhjem (), is a city and municipality in Trøndelag county, Norway. As of 2020, it had a population of 205,332, was the third most populous municipality in Norway, and was the fourth largest urban area. Trondheim lies on the south shore of Trondheim Fjord at the mouth of the River Nidelva. Among the major technology-oriented institutions headquartered in Trondheim are the Norwegian University of Science and Technology (NTNU), the Foundation for Scientific and Industrial Research (SINTEF), and St. Olavs University Hospital. The settlement was founded in 997 as a trading post, and it served as the capital of Norway during the Viking Age until 1217. From 1152 to 1537, the city was the seat of the Catholic Archdiocese of Nidaros; it then became, and has remained, the seat of the Lutheran Diocese of Nidaros, and the site of the Nidaros Cathedral. It was incorporated in 1838. The current municipalit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Confluence
In geography, a confluence (also: ''conflux'') occurs where two or more flowing bodies of water join to form a single channel. A confluence can occur in several configurations: at the point where a tributary joins a larger river (main stem); or where two streams meet to become the source of a river of a new name (such as the confluence of the Monongahela and Allegheny rivers at Pittsburgh, forming the Ohio); or where two separated channels of a river (forming a river island) rejoin at the downstream end. Scientific study of confluences Confluences are studied in a variety of sciences. Hydrology studies the characteristic flow patterns of confluences and how they give rise to patterns of erosion, bars, and scour pools. The water flows and their consequences are often studied with mathematical models. Confluences are relevant to the distribution of living organisms (i.e., ecology) as well; "the general pattern ownstream of confluencesof increasing stream flow and decreasing s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nedenes
Nedenes is a village in Arendal municipality in Agder county, Norway. The village is located in the southern part of Arendal, just north of the municipal border with Grimstad. The Norwegian County Road 420 runs through the village heading north to the village of Rød and onwards to the island of Hisøya to the north. Engene Church is located in Nedenes. The county of Agder Agder is a county (''fylke'') and traditional region in the southern part of Norway. The county was established on 1 January 2020, when the old Vest-Agder and Aust-Agder counties were merged. Since the early 1900s, the term Sørlandet ("south ... was named ''Nedenes amt'' from the 1600s until 1919. This name was chosen because the Nedenes village was once a large, medieval farm and later was the seat of the county officials. References Villages in Agder Arendal {{Agder-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nisser
Nisser is a lake in Nissedal, Norway. It is the 13th-largest lake in the nation by area with a surface area of , the 10th largest by volume at 7.19 km³, and the 13th deepest at . It is located in Nissedal and Kviteseid municipality in Vestfold og Telemark county, and is Telemark's largest lake. Part of the Arendal watershed, water enters from the discharge of Vråvatn, and its outlet is the Nisserelva river. In 1914, a canal was constructed between Nisser (which is above sea level) and Vråvatn (which is above sea level). This makes it possible to travel the long stretch from Tveitsund to Vråliosen by boat. The Norse form of the name was ''Nizir'' - probably from an older form ''*Niðsær''. The meaning of the name is 'the lake (''sær'') of the river ''Nið'' (now Nidelva (Aust-Agder))'. Fish species in the lake include the Brown trout, European whitefish, European perch, Stickleback, and Arctic char. The widest fjord at Lake Nisser is found immediately south ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Old Norse
Old Norse, Old Nordic, or Old Scandinavian, is a stage of development of North Germanic languages, North Germanic dialects before their final divergence into separate Nordic languages. Old Norse was spoken by inhabitants of Scandinavia and their Viking expansion, overseas settlements and chronologically coincides with the Viking Age, the Christianization of Scandinavia and the consolidation of Scandinavian kingdoms from about the 7th to the 15th centuries. The Proto-Norse language developed into Old Norse by the 8th century, and Old Norse began to develop into the modern North Germanic languages in the mid-to-late 14th century, ending the language phase known as Old Norse. These dates, however, are not absolute, since written Old Norse is found well into the 15th century. Old Norse was divided into three dialects: Old West Norse, ''Old West Norse'' or ''Old West Nordic'' (often referred to as ''Old Norse''), Old East Norse, ''Old East Norse'' or ''Old East Nordic'', and ''Ol ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Salmon
Salmon () is the common name for several list of commercially important fish species, commercially important species of euryhaline ray-finned fish from the family (biology), family Salmonidae, which are native to tributary, tributaries of the North Atlantic (genus ''Salmo'') and North Pacific (genus ''Oncorhynchus'') basin. Other closely related fish in the same family include trout, Salvelinus, char, Thymallus, grayling, Freshwater whitefish, whitefish, lenok and Hucho, taimen. Salmon are typically fish migration, anadromous: they hatch in the gravel stream bed, beds of shallow fresh water streams, migrate to the ocean as adults and live like sea fish, then return to fresh water to reproduce. However, populations of several species are restricted to fresh water throughout their lives. Folklore has it that the fish return to the exact spot where they hatched to spawn (biology), spawn, and tracking studies have shown this to be mostly true. A portion of a returning salmon run ma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydro-electric Power
Hydroelectricity, or hydroelectric power, is Electricity generation, electricity generated from hydropower (water power). Hydropower supplies one sixth of the world's electricity, almost 4500 TWh in 2020, which is more than all other Renewable energy, renewable sources combined and also more than nuclear power. Hydropower can provide large amounts of Low-carbon power, low-carbon electricity on demand, making it a key element for creating secure and clean electricity supply systems. A hydroelectric power station that has a dam and reservoir is a flexible source, since the amount of electricity produced can be increased or decreased in seconds or minutes in response to varying electricity demand. Once a hydroelectric complex is constructed, it produces no direct waste, and almost always emits considerably less greenhouse gas than fossil fuel-powered energy plants. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kunnskapsforlaget
Kunnskapsforlaget () is a Norwegian publishing company based in Oslo. Kunnskapsforlaget was established in 1975, as a partnership between H. Aschehoug & Co. (W. Nygaard) and Gyldendal Norsk Forlag. The purpose was to co-operate on publishing encyclopaedias and dictionaries. The first volume of Store norske leksikon (SNL) was published in 1978. A total of four editions was published (the last one in 2004), before the online version was transferred to Institusjonen Fritt Ord og Sparebankstiftelsen DnB in 2011. Kunnskapsforlaget is the largest dictionary publisher in Norway. They publish both printed books, and digital dictionaries that are available through the online service Ordnett (launched in 2004). Their main languages are English and Norwegian, but they also have dictionaries in 21 other languages. In September 2018, Gyldendal Norsk Forlag became the single owner of the company. As of 2018, the publisher has eight full-time employees. The CEO is Thomas Nygaard Thomas m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Store Norske Leksikon
The ''Great Norwegian Encyclopedia'' ( no, Store Norske Leksikon, abbreviated ''SNL''), is a Norwegian-language online encyclopedia. The online encyclopedia is among the most-read Norwegian published sites, with more than two million unique visitors per month. Paper editions 1978–2007 The ''SNL'' was created in 1978, when the two publishing houses Aschehoug and Gyldendal merged their encyclopedias and created the company Kunnskapsforlaget. Up until 1978 the two publishing houses of Aschehoug and Gyldendal, Norway's two largest, had published ' and ', respectively. The respective first editions were published in 1907–1913 (Aschehoug) and 1933–1934 (Gyldendal). The slump in sales for paper-based encyclopedias around the turn of the 21st century hit Kunnskapsforlaget hard, but a fourth edition of the paper encyclopedia was secured by a grant of ten million Norwegian kroner from the foundation Fritt Ord in 2003. The fourth edition consisted of 16 volumes, a t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hisøya
Hisøya or Hisøy (historically: ''Hisøen'') is an island in Agder county, Norway. The island has been part of the municipality of Arendal since 1992. The main village areas on the island are Kolbjørnsvik, His, Slåbervig, and Sandviga. The village of Kolbjørnsvik is located across the harbor from the town of Arendal. There are two bridges that connect Hisøya to the mainland: the Strøm Bridge on the northwest side of the island and the Vippa Bridge on the southwest side of the island. In 2015, the island was home to about 4,450 people giving it a population density of about . The island lies along the Skaggerak coast of southeastern Norway. Hisøya is separated from the mainland to the northwest by the river Nidelv. The island of Tromøya lies to the northeast, separated from Hisøya by the Galtesundet strait. The small islands of Ærøya, Havsøya, and Merdø lie just to the southeast of Hisøya. The highest point on Hisøya is the tall hill on the edge of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Drainage Basin
A drainage basin is an area of land where all flowing surface water converges to a single point, such as a river mouth, or flows into another body of water, such as a lake or ocean. A basin is separated from adjacent basins by a perimeter, the '' drainage divide'', made up of a succession of elevated features, such as ridges and hills. A basin may consist of smaller basins that merge at river confluences, forming a hierarchical pattern. Other terms for a drainage basin are catchment area, catchment basin, drainage area, river basin, water basin, and impluvium. In North America, they are commonly called a watershed, though in other English-speaking places, "watershed" is used only in its original sense, that of a drainage divide. In a closed drainage basin, or endorheic basin, the water converges to a single point inside the basin, known as a sink, which may be a permanent lake, a dry lake, or a point where surface water is lost underground. Drainage basins are similar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
