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Madrid–Seville High-speed Rail Line
The Madrid–Sevilla high-speed line (NAFA or ''Nuevo Acceso Ferroviario a Andalucía'') is a Spanish railway line for high-speed traffic between Madrid and Seville. The first Spanish high-speed rail connection has been in use since 21 April 1992 at speeds up to 300 km/h (186 mph). Travel time between the two end points was reduced by over half. At Córdoba the Madrid–Málaga high-speed rail line leaves the line from Madrid. At Seville the line is extended to Cádiz only for the Alvia service. Routing The line starts at Madrid-Atocha and runs over 31 bridges (total length ) and through 17 tunnels (total length , crossing the plains of the southern half of the Inner Plateau. It climbs south of Toledo as well as when crossing the Sierra Morena to an altitude of 800 meters, and then descends to around sea level as it approaches Seville. The terminus of the line is the new railway station Santa Justa in Seville. Technical details The high-speed line was construc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Madrid
Madrid ( , ) is the capital and most populous city of Spain. The city has almost 3.4 million inhabitants and a metropolitan area population of approximately 6.7 million. It is the second-largest city in the European Union (EU), and its monocentric metropolitan area is the third-largest in the EU.United Nations Department of Economic and Social AffairWorld Urbanization Prospects (2007 revision), (United Nations, 2008), Table A.12. Data for 2007. The municipality covers geographical area. Madrid lies on the River Manzanares in the central part of the Iberian Peninsula. Capital city of both Spain (almost without interruption since 1561) and the surrounding autonomous community of Madrid (since 1983), it is also the political, economic and cultural centre of the country. The city is situated on an elevated plain about from the closest seaside location. The climate of Madrid features hot summers and cool winters. The Madrid urban agglomeration has the second-large ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alvia
Alvia is a high-speed train service in Spain used by Renfe Operadora for long-distance service with a top speed of . The trains have the ability to use both Iberian gauge and standard gauge, which allows them to travel on the recently constructed high-speed lines for part of the journey before switching to the "classic" Iberian gauge network to complete it. Trains that run exclusively on high-speed tracks are branded AVE or Avant. Routes , RENFE Class 120 / 121, RENFE Class 130 and RENFE Class 730 trains are in service. Class 120 trains are used on the routes from Madrid to Pamplona, Logroño, Irún and Hendaye (France) (running on high-speed lines from Madrid to Burgos and changing gauge there), and between Barcelona and Irún, Bilbao (running on high-speed lines between Barcelona and Zaragoza). Class 121 trains are employed on the routes from Madrid to Huelva, Ponferrada, Gijón and Santander changing gauge at Seville, León and Venta de Baños. Class 130 trains are used ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Overhead Wires
An overhead line or overhead wire is an electrical cable that is used to transmit electrical energy to electric locomotives, trolleybuses or trams. It is known variously as: * Overhead catenary * Overhead contact system (OCS) * Overhead equipment (OHE) * Overhead line equipment (OLE or OHLE) * Overhead lines (OHL) * Overhead wiring (OHW) * Traction wire * Trolley wire This article follows the International Union of Railways in using the generic term ''overhead line''. An overhead line consists of one or more wires (or rails, particularly in tunnels) situated over rail tracks, raised to a high electrical potential by connection to feeder stations at regular intervals. The feeder stations are usually fed from a high-voltage electrical grid. Overview Electric trains that collect their current from overhead lines use a device such as a pantograph, bow collector or trolley pole. It presses against the underside of the lowest overhead wire, the contact wire. Current collectors are ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Transformer
A transformer is a passive component that transfers electrical energy from one electrical circuit to another circuit, or multiple circuits. A varying current in any coil of the transformer produces a varying magnetic flux in the transformer's core, which induces a varying electromotive force (EMF) across any other coils wound around the same core. Electrical energy can be transferred between separate coils without a metallic (conductive) connection between the two circuits. Faraday's law of induction, discovered in 1831, describes the induced voltage effect in any coil due to a changing magnetic flux encircled by the coil. Transformers are used to change AC voltage levels, such transformers being termed step-up or step-down type to increase or decrease voltage level, respectively. Transformers can also be used to provide galvanic isolation between circuits as well as to couple stages of signal-processing circuits. Since the invention of the first constant-potential transfo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rail Transport In Spain
Rail transport in Spain operates on four rail gauges and services are operated by a variety of private and public operators. The total route length in 2012 was 16,026 km (10,182 km electrified). Most railways are operated by Renfe Operadora; metre and narrow-gauge lines are operated by FEVE and other carriers in individual autonomous communities. It is proposed and planned to build or convert more lines to standard gauge, including some dual gauging of broad-gauge lines, especially where these lines link to France, including platforms to be heightened. Spain is a member of the International Union of Railways (UIC). The UIC Country Code for Spain is 71. History The first railway line in the Iberian Peninsula was built in 1848 between Barcelona and Mataró. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Standard Gauge
A standard-gauge railway is a railway with a track gauge of . The standard gauge is also called Stephenson gauge (after George Stephenson), International gauge, UIC gauge, uniform gauge, normal gauge and European gauge in Europe, and SGR in East Africa. It is the most widely used track gauge around the world, with approximately 55% of the lines in the world using it. All high-speed rail lines use standard gauge except those in Russia, Finland, and Uzbekistan. The distance between the inside edges of the rails is defined to be 1435 mm except in the United States and on some heritage British lines, where it is defined in U.S. customary/Imperial units as exactly "four feet eight and one half inches" which is equivalent to 1435.1mm. History As railways developed and expanded, one of the key issues was the track gauge (the distance, or width, between the inner sides of the rails) to be used. Different railways used different gauges, and where rails of different gauge met – ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sea Level
Mean sea level (MSL, often shortened to sea level) is an average surface level of one or more among Earth's coastal bodies of water from which heights such as elevation may be measured. The global MSL is a type of vertical datuma standardised geodetic datumthat is used, for example, as a chart datum in cartography and marine navigation, or, in aviation, as the standard sea level at which atmospheric pressure is measured to calibrate altitude and, consequently, aircraft flight levels. A common and relatively straightforward mean sea-level standard is instead the midpoint between a mean low and mean high tide at a particular location. Sea levels can be affected by many factors and are known to have varied greatly over geological time scales. Current sea level rise is mainly caused by human-induced climate change. When temperatures rise, Glacier, mountain glaciers and the Ice sheet, polar ice caps melt, increasing the amount of water in water bodies. Because most of human settlem ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sierra Morena
The Sierra Morena is one of the main systems of mountain ranges in Spain. It stretches for 450 kilometres from east to west across the south of the Iberian Peninsula, forming the southern border of the ''Meseta Central'' plateau and providing the watershed between the valleys of the Guadiana to the north and the west, and the Guadalquivir to the south. Its highest summit is 1,332 m high Bañuela. Other notable peaks are Corral de Borros 1,312 m and Cerro de la Estrella 1,298 m. The name ''Sierra Morena'' has a strong legendary reputation in Spanish culture and tradition, with myths about bandits ''(Los bandidos de Sierra Morena)'', a giant snake ''(El Saetón de Sierra Morena)'' and a child brought up by wolves (Marcos Rodríguez Pantoja), among others. This range is also mentioned in the famous Mexican song "Cielito Lindo" and in one of the most well known traditional Spanish songs, "Soy Minero", interpreted by Antonio Molina. Description The Sierra Morena stretches f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Toledo, Spain
Toledo ( , ) is a city and municipality of Spain, capital of the province of Toledo and the ''de jure'' seat of the government and parliament of the autonomous communities of Spain, autonomous community of Castilla–La Mancha. Toledo was declared a World Heritage Site by UNESCO in 1986 for its extensive monumental and cultural heritage. Located on the banks of the Tagus in central Iberian Peninsula, Iberia, Toledo is known as the "City of the Three Cultures" for the cultural influences of Christians, Muslims, and Jews throughout its history. It was the capital, from 542 to 725 CE, of the Visigothic kingdom, which followed the fall of the Roman Empire. Toledo was also the location of historic events such as the Councils of Toledo and was labelled the "Imperial City" due to the fact that it was the main venue of the court of Charles V, Holy Roman Emperor in Spain. The city, seat of a powerful archdiocese for much of its history, has a Gothic Cathedral, the ''Cathedral of Toledo, Ca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Meseta Central
The ''Meseta Central'' (, sometimes referred to in English as Inner Plateau) is one of the basic geographical units of the Iberian Peninsula. It consists of a plateau covering a large part of the latter's interior. Developed during the 19th century, the concept of ''meseta central'' was handled by Heinrich Moritz Willkomm in lower case, and eventually was reportedly the first in using it in upper case, giving it a toponymic nature. The concept was also brought forward by José Macpherson y Hemas, while the writers of the Spanish Generation of '98 greatly contributed to its popularisation among the public sphere. The Sistema Central mountain range cuts across the Meseta Central, leaving the ''Submeseta Norte'' sub-unit (with heights mostly ranging from 700 to 800 m) to the North and the ''Submeseta Sur'' (with heights mostly ranging from 600 to 700 m) to the South. Respectively, the former is drained by the Douro while the latter is drained by the Tagus and the Guadiana. The ''m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plain
In geography, a plain is a flat expanse of land that generally does not change much in elevation, and is primarily treeless. Plains occur as lowlands along valleys or at the base of mountains, as coastal plains, and as plateaus or uplands. In a valley, a plain is enclosed on two sides, but in other cases a plain may be delineated by a complete or partial ring of hills, by mountains, or by cliffs. Where a geological region contains more than one plain, they may be connected by a pass (sometimes termed a gap). Coastal plains mostly rise from sea level until they run into elevated features such as mountains or plateaus. Plains are one of the major landforms on earth, where they are present on all continents, and cover more than one-third of the world's land area. Plains can be formed from flowing lava; from deposition of sediment by water, ice, or wind; or formed by erosion by the agents from hills and mountains. Biomes on plains include grassland ( temperate or subtr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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