- published: 11 Jan 2017
- views: 18791
Canals and navigations are human-made channels for water. In the vernacular both are referred to as 'canals'. The main difference between them is that a navigation parallels a river and shares its drainage basin, while a canal cuts across a drainage divide.
A navigation is a series of channels that run roughly parallel to the valley and stream bed of an unimproved river. A navigation always shares the drainage basin of the river. A vessel uses the calm parts of the river itself as well as improvements, traversing the same changes in height.
A true canal is a channel that cuts across a drainage divide, making a navigable channel connecting two different drainage basins.
Most commercially important canals of the first half of the 19th-century were a little of each, using rivers in long stretches, and divide crossing canals in others. This is true for many canals still in use.
Both navigations and canals use engineered structures to improve navigation:
The Suez Canal (Arabic: قناة السويس Qanāt al-Suways) is an artificial sea-level waterway in Egypt, connecting the Mediterranean Sea to the Red Sea through the Isthmus of Suez, and separates the African continent from Asia. After 10 years of construction, it was officially opened on November 17, 1869. The canal allows ships to travel between Europe and South Asia without navigating around Africa, thereby reducing the sea voyage distance by about 7,000 kilometres (4,300 mi). It extends from the northern terminus of Port Said to the southern terminus of Port Tewfik at the city of Suez. Its length is 193.30 km (120.11 mi), including its northern and southern access channels. In 2012, 17,225 vessels traversed the canal (47 per day).
The canal is a single-lane waterway with passing locations in the Ballah Bypass and the Great Bitter Lake. It contains no locks system, with seawater flowing freely through it. In general, the canal north of the Bitter Lakes flows north in winter and south in summer. South of the lakes, the current changes with the tide at Suez.
The Panamá Canal (Spanish: Canal de Panamá) is a 48-mile (77 km) ship canal in Panama that connects the Atlantic Ocean (via the Caribbean Sea) to the Pacific Ocean. The canal cuts across the Isthmus of Panama and is a key conduit for international maritime trade. There are locks at each end to lift ships up to Gatun Lake, an artificial lake created to reduce the amount of excavation work required for the canal, 26 metres (85 ft) above sea level. The current locks are 33.5 metres (110 ft) wide. A third, wider lane of locks is currently under construction and is due to open in 2016.
France began work on the canal in 1881, but had to stop because of engineering problems and high mortality due to disease. The United States took over the project in 1904, and took a decade to complete the canal, which was officially opened on August 15, 1914. One of the largest and most difficult engineering projects ever undertaken, the Panama Canal shortcut greatly reduced the time for ships to travel between the Atlantic and Pacific Oceans, enabling them to avoid the lengthy, hazardous Cape Horn route around the southernmost tip of South America via the Drake Passage or Strait of Magellan. The shorter, faster, and safer route to the U.S. West Coast and to nations in and around the Pacific Ocean allowed those places to become more integrated with the world economy.
The Suez Canal is an artificial sea-level waterway in Egypt, connecting the Mediterranean Sea and the Red Sea. Opened November 17, 1869 after 10 years of construction, it allows ships to travel between Europe and South Asia without navigating around Africa thereby reducing the sea voyage distance between Europe and India by about 7,000 kilometres (4,300 mi). The northern terminus is Port Said; the southern terminus is Port Tewfik at the city of Suez. Ismailia is on its west bank, 3 km (1.9 mi) from the half-way point. In 2012, 17,225 vessels traversed the canal (47 per day). When built, the canal was 164 km (102 mi) long and 8 m (26 ft) deep. After several enlargements, it is 193.30 km (120.11 mi) long, 24 m (79 ft) deep and 205 metres (673 ft) wide. It consists of the northern access cha...
The Celebrity Infinity was making its way from the Pacific Ocean to the Atlantic Ocean through the Panama Canal. This video was taken from a fixed position on the top deck of the cruise ship for more than 10 hours. It shows the whole route and operations with short explanations. The length of the video was reduced to less than 6 minutes. El crucero 'Celebrity Infinity" estaba cruzando el Canal de Panama desde el Océano Pacífico al Océano Atlántico. Este video fue tomado desde una posición fija en la cubierta alto del crucero durante más de 10 horas. Muestra la ruta entera y operaciones con explicaciones breves. La duración del vídeo se redujo a menos de 6 minutos.
Narrowboat
Megastructures examines the mega-machines used to run the Panama Canal and uncovers the canal's five-billion dollar project for it's expansion.
Abonne toi à ma chaîne pour voir tous mes Tutos. J't'aime putain ! Retrouve les Tutos tous les vendredis dans le Grand Journal de Canal + Crédits : Avec Jerome Niel Ecrit par Jerome Niel, Axel Maliverney, Monsieur Poulpe et Vincent Tirel Réalisé par Axel Maliverney et Jerome Niel Direction Artistique : Ludoc Montage : Quentin Eiden et Florent Colignon Produit par Lorenzo Benedetti Studio Bagel Prod
Galera, como vocês pediram nós trollamos a Ju falando que tínhamos terminado e o canal ia acabar. Assistam ao vídeo para saberem a reação dela!!! ► Canal da Ju: https://www.youtube.com/user/Juliana1846 INSCREVA-SE: https://goo.gl/SmP63J VEJA TAMBÉM: ►A MENTIROSA DO BAIRRO! Parte:. 2 https://goo.gl/a1dm8y ►TA TRANQUILO?! - PERGUNTE À RAFA! #9 https://goo.gl/en7jnI ►QUEM NUNCA? - PRIMEIRO DIA DE AULA! https://goo.gl/Cu6EdQ INSTAGRAM: https://instagram.com/rafaellabaltar/ https://instagram.com/lipebigu/ SNAP: Snapchat: lipebigu Snapchat: rafaellabaltar Quer nos mandar alguma coisa? Eba! CAIXA POSTAL: 35006 CEP: 21060-971 RIO DE JANEIRO - RJ INSCREVAM-SE e não esqueçam de deixar aquele LIKE!
Watch the short animation to find out how it works. In larger systems thousands of connected devices talk to each other using Internet of Things (IoT) technology. Not only are water losses largely eliminated but water is distributed equitably to all users and delivery flexibility and reliability is improved. A flexible and reliable supply service is needed for farmers to better meet the needs of their crops and make more efficient use of water at the farm level. More information can be found here at the UN Food and Agriculture Organisation website: http://www.fao.org/docrep/006/y4854e/y4854e00.htm Animation: www.keikokamata.com
Se inscrevam no meu canal e da o gostei aí
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With My Friends Tigger and Pooh
My Friends Tigger and Pooh
My Friends Tigger and Pooh