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Keban Dam
The Keban Dam ( tr, Keban Barajı) is a hydroelectric dam on the Euphrates, located in the Elazığ Province of Turkey. The dam is the first and uppermost of several large-scale dams to be built on the Euphrates by Turkey. Although the Keban Dam was not originally constructed as a part of the Southeastern Anatolia Project (GAP), it is now a fully integrated component of the project, which aims to stimulate economic development in Southeastern Turkey. Construction of the dam commenced in 1966 and was completed in 1974. Keban Dam Lake ( tr, Keban Baraj Gölü), the reservoir created by Keban Dam, has a surface area of and is reputedly the fourth-largest lake in Turkey after Lake Van, Lake Tuz, and the reservoir created by the Atatürk Dam. Project history Construction of the Keban Dam was first proposed in 1936 by the newly established Electric Affairs Survey Administration, but not started before 1966. Construction was carried out by the French-Italian consortium SCI-Impreglio and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Euphrates
The Euphrates () is the longest and one of the most historically important rivers of Western Asia. Tigris–Euphrates river system, Together with the Tigris, it is one of the two defining rivers of Mesopotamia ( ''the land between the rivers''). Originating in Turkey, the Euphrates flows through Syria and Iraq to join the Tigris in the Shatt al-Arab, which empties into the Persian Gulf. Etymology The Ancient Greek form ''Euphrátēs'' ( grc, Εὐφράτης, as if from Greek εὖ "good" and φράζω "I announce or declare") was adapted from Old Persian 𐎢𐎳𐎼𐎠𐎬𐎢 ''Ufrātu'', itself from Elamite language, Elamite 𒌑𒅁𒊏𒌅𒅖 ''ú-ip-ra-tu-iš''. The Elamite name is ultimately derived from a name spelt in cuneiform as 𒌓𒄒𒉣 , which read as Sumerian language, Sumerian is "Buranuna" and read as Akkadian language, Akkadian is "Purattu"; many cuneiform signs have a Sumerian pronunciation and an Akkadian pronunciation, taken from a Sumerian word a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Murat River
The Murat River, also called Eastern Euphrates ( tr, Murat Nehri, , hy, Արածանի, translit=Aratsani), is a major source of the Euphrates River. The Ancient Greeks and Romans used to call the river ''Arsanias'' ( gr, Ἀρσανίας). It originates near Mount Ararat north of Lake Van, in Eastern Turkey, and flows westward for through mountainous area. Before the construction of the Keban Dam, the Murat River joined the Karasu River or Western Euphrates north of the dam site and north of the town of Keban. In Muş Province, the river is interrupted by the Alpaslan-1 Dam, which was completed in 2009. The Alpaslan-2 Dam was completed in 2021 and is located downstream of Alpaslan-1. The river merges into the reservoir of the Keban Dam, at one time Turkey's largest dam, which was completed in 1974 and provides electrical power. In Bingöl and Elazığ provinces, Kalehan Energy has four dams planned for the river: from upstream to downstream, the Upper Kaleköy Dam, Lower ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ağın Bridge
The Ağın Bridge, Ağın (Karamağara) Bridge, ( tr, Ağın Köprüsü or ''Ağın Karamağara Köprüsü'') is a cable-stayed bridge spanning Lake Keban in Elazığ Province, Turkey. It was opened to traffic in 2015. The construction of the bridge began in 2001. Due to alterations to the project, construction was delayed, but work resumed on January 10, 2012, and the opening took place on October 26, 2015. The bridge was built by the Mega Yapi company and the consultant was BOTEK Bosphorus Technical Consulting Corporation. The cable-stayed bridge is long and wide with a main span of , and a clearance of above the water level. The bridge carries one lane of traffic in each direction. At its opening, the Ağın Bridge became Turkey's fourth longest one after the Bosphorus Bridge, , and Fatih Sultan Mehmet Bridge, , in Istanbul and the Nissibi Euphrates Bridge, , in Adıyaman Province. The budgeted cost of the construction was given as 33.325 million. Background In the pa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Karasu (Euphrates)
The Karasu (Turkish for 'black water') or Western Euphrates is a long river in eastern Turkey, one of the two sources of the Euphrates. It has a length of about 450 km. To the ancient Greeks the river was known as the (''Telebóas''). Course The river rises on the Dumlu Dağ in Erzurum Province, and drains the plains around the city of Erzurum. It is joined by the Serçeme River, then flows west through Erzincan Province, turning south, then west and receiving the tributary Tuzla Su. Between Erzincan and Kemah it is joined by the Gönye River and passes through a rocky gorge. Near the small town of Kemaliye it receives its last tributary, the Çaltı Çayı, before turning sharply southeast to flow through a deep canyon into the Keban Dam Lake on the Euphrates. Before construction of the Keban Dam the Karasu joined the Murat River 10 km above the dam site and 13 km above the town of Keban. History It is thought likely that the river Harpasos mentioned b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Evaporation
Evaporation is a type of vaporization that occurs on the surface of a liquid as it changes into the gas phase. High concentration of the evaporating substance in the surrounding gas significantly slows down evaporation, such as when humidity affects rate of evaporation of water. When the molecules of the liquid collide, they transfer energy to each other based on how they collide. When a molecule near the surface absorbs enough energy to overcome the vapor pressure, it will escape and enter the surrounding air as a gas. When evaporation occurs, the energy removed from the vaporized liquid will reduce the temperature of the liquid, resulting in evaporative cooling. On average, only a fraction of the molecules in a liquid have enough heat energy to escape from the liquid. The evaporation will continue until an equilibrium is reached when the evaporation of the liquid is equal to its condensation. In an enclosed environment, a liquid will evaporate until the surrounding air is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Watt
The watt (symbol: W) is the unit of power or radiant flux in the International System of Units (SI), equal to 1 joule per second or 1 kg⋅m2⋅s−3. It is used to quantify the rate of energy transfer. The watt is named after James Watt (1736–1819), an 18th-century Scottish inventor, mechanical engineer, and chemist who improved the Newcomen engine with his own steam engine in 1776. Watt's invention was fundamental for the Industrial Revolution. Overview When an object's velocity is held constant at one metre per second against a constant opposing force of one newton, the rate at which work is done is one watt. : \mathrm In terms of electromagnetism, one watt is the rate at which electrical work is performed when a current of one ampere (A) flows across an electrical potential difference of one volt (V), meaning the watt is equivalent to the volt-ampere (the latter unit, however, is used for a different quantity from the real power of an electrical circuit). : ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Water Turbine
A water turbine is a rotary machine that converts kinetic energy and potential energy of water into mechanical work. Water turbines were developed in the 19th century and were widely used for industrial power prior to electrical grids. Now, they are mostly used for electric power generation. Water turbines are mostly found in dams to generate electric power from water potential energy. History Water wheels have been used for hundreds of years for industrial power. Their main shortcoming is size, which limits the flow rate and head that can be harnessed. The migration from water wheels to modern turbines took about one hundred years. Development occurred during the Industrial revolution, using scientific principles and methods. They also made extensive use of new materials and manufacturing methods developed at the time. Swirl The word turbine was introduced by the French engineer Claude Burdin in the early 19th century and is derived from the Greek word "τύρβη" ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
State Hydraulic Works (Turkey)
The State Hydraulic Works ( tr, Devlet Su İşleri) is a state agency, under the Ministry of Environment and Forestry of Turkey, responsible for the utilization of all the country's water resources. The institution's four major functions are energy, agriculture, services and environment. The General Manager of DSI is Kaya Yıldız. History Development of water resources in Turkey began with the establishment of the "General Directorate of Public Works" ( ota, Umur-u Nafia Müdüriyet-i Umumiyesi) by the Ottoman Government in 1914. The institution started to undertake continuous and systematical studies on irrigation, reclamation, flood control, navigation, water storage and distribution. in 1925, soon after the foundation of the Turkish Republic, regional offices were opened in Adana, Ankara, Bursa, Edirne and Izmir under the "Waters Directorate". Due to insufficient financial resources and field observations data available, water projects could not be expedited as planned. Sev ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gravity Dam
A gravity dam is a dam constructed from concrete or stone masonry and designed to hold back water by using only the weight of the material and its resistance against the foundation to oppose the horizontal pressure of water pushing against it. Gravity dams are designed so that each section of the dam is stable and independent of any other dam section. Characteristics Gravity dams generally require stiff rock foundations of high bearing strength (slightly weathered to fresh), although in rare cases, they have been built on soil foundations. The bearing strength of the foundation limits the allowable position of the resultant force, influencing the overall stability. Also, the stiff nature of the gravity dam structure is unforgiving to differential foundation settlement, which can induce cracking of the dam structure. Gravity dams provide some advantages over embankment dams, the main advantage being that they can tolerate minor over-topping flows without damage, as the concre ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Embankment Dam
An embankment dam is a large artificial dam. It is typically created by the placement and compaction of a complex semi-plastic mound of various compositions of soil or rock. It has a semi-pervious waterproof natural covering for its surface and a dense, impervious core. This makes the dam impervious to surface or seepage erosion. Such a dam is composed of fragmented independent material particles. The friction and interaction of particles binds the particles together into a stable mass rather than by the use of a cementing substance. Types Embankment dams come in two types: the earth-filled dam (also called an earthen dam or terrain dam) made of compacted earth, and the rock-filled dam. A cross-section of an embankment dam shows a shape like a bank, or hill. Most have a central section or core composed of an impermeable material to stop water from seeping through the dam. The core can be of clay, concrete, or asphalt concrete. This type of dam is a good choice for sites wit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Karamagara Bridge
The Karamagara Bridge ( tr, Karamağara Köprüsü, "Bridge of the Black Cave") is a Byzantine or late Roman bridge in the ancient region of Cappadocia in eastern Turkey, and possibly the earliest known pointed arch bridge. The bridge, along with much of the Arapgir Çayı valley, has been submerged since the completion of the Keban Dam in 1975, as a result of which the water level in the Euphrates valley and some of its upstream tributaries dramatically rose. Location and situation The single arch of 17 m spans between the cliffs of the rocky gorge of the Arapgir Çayı, an affluent of the Euphrates. The structure belonged to the Roman road to Melitene, which was cut into the rock near the bridge at both sides of the river. Its name ''Karamağara'' ("black cave") probably derives from an artificially widened cavern on the southern bank which was carved into the darkish rock 75 m above the structure and served for protection of the crossing point. The bridge was ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Harald Hauptmann
Harald Hauptmann (19 April 1936 – 2 August 2018) was a German archaeologist known for his excavation work in east and southeast Turkey at sites such as Norşuntepe. He also studied of pre-Islamic Pakistan. He was a professor at the University of Heidelberg and a foreign-member of the Serbian Academy of Sciences and Arts.Harald Hauptmann (1936-2018) Hauptmann was born in Ratkau, Kreis Troppau, in the former |
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