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Tidal Race
Tidal race or tidal rapid is a natural occurrence whereby a fast-moving tide passes through a constriction, resulting in the formation of waves, eddies and hazardous currents. The constriction can be a passage where the sides narrow, for example the Gulf of Corryvreckan and the Saltstraumen maelstrom, or an underwater obstruction (a reef or rising seabed), such as is found at the Portland Race in the United Kingdom. In extreme cases, such as Skookumchuck Narrows in British Columbia, through which tides can travel at more than 17 knots, very large whirlpools develop, which can be extremely hazardous to navigation. Notable tidal races * Cape Reinga in New Zealand * Skookumchuck Narrows in British Columbia, Canada * The Bitches in Wales, United KingdomBitches and Tides
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Lunga And The Grey Dog
Lunga may refer to: Places ;Democratic Republic of Congo * Lunga, DRC, a town located in Katanga Province ;Moldova * Lunga, Floreşti, a commune in Floreşti district * Lunga, Transnistria, a commune in Transnistria ;Romania * Lunga, a village in Târgu Secuiesc city, Covasna County * Lunga, a village in Comloşu Mare Commune, Timiș County * Lunga, a tributary of the Cheia in Vâlcea County * Lunga, a tributary of the Bistricioara in Vâlcea County ;Scotland * Lunga, Slate Islands, one of the Slate Islands in Argyll and Bute * Lunga, Treshnish Isles, in Argyll and Bute ;Solomon Islands * An area on Guadalcanal, including Lunga Point and Lunga River (Solomon Islands) ;United States * Lunga Park Recreation Area and Lunga Reservoir, Marine Corps Base Quantico, Virginia ;Zambia * Two rivers called Lunga River (Zambia) See also * Lunga, also lunga pausa, used in music notation above a fermata to extend its length * USS Lunga Point (CVE-94) * Lunga Lunga, a settlement in Kenya ...
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New Zealand
New Zealand ( mi, Aotearoa ) is an island country in the southwestern Pacific Ocean. It consists of two main landmasses—the North Island () and the South Island ()—and over 700 smaller islands. It is the sixth-largest island country by area, covering . New Zealand is about east of Australia across the Tasman Sea and south of the islands of New Caledonia, Fiji, and Tonga. The country's varied topography and sharp mountain peaks, including the Southern Alps, owe much to tectonic uplift and volcanic eruptions. New Zealand's capital city is Wellington, and its most populous city is Auckland. The islands of New Zealand were the last large habitable land to be settled by humans. Between about 1280 and 1350, Polynesians began to settle in the islands and then developed a distinctive Māori culture. In 1642, the Dutch explorer Abel Tasman became the first European to sight and record New Zealand. In 1840, representatives of the United Kingdom and Māori chiefs ...
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Shikoku
is the smallest of the four main islands of Japan. It is long and between wide. It has a population of 3.8 million (, 3.1%). It is south of Honshu and northeast of Kyushu. Shikoku's ancient names include ''Iyo-no-futana-shima'' (), ''Iyo-shima'' (), and ''Futana-shima'' (), and its current name refers to the four former provinces that made up the island: Awa, Tosa, Sanuki, and Iyo. Geography Shikoku Island, comprising Shikoku and its surrounding islets, covers about and consists of four prefectures: Ehime, Kagawa, Kōchi, and Tokushima. Across the Seto Inland Sea lie Wakayama, Osaka, Hyōgo, Okayama, Hiroshima, and Yamaguchi Prefectures on Honshu. To the west lie Ōita and Miyazaki Prefectures on Kyushu. Shikoku is ranked as the 50th largest island by area in the world. Additionally, it is ranked as the 23rd most populated island in the world, with a population density of 193 inhabitants per square kilometre (500/sq mi). Mountains running east and west d ...
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Naruto Strait
is a strait between Awaji Island and Shikoku in Japan. It connects Harima Nada, the eastern part of the Inland Sea and the Kii Channel. A famous feature of the strait is the Naruto whirlpools. Ōnaruto Bridge, the southern part of the Kobe-Awaji-Naruto Expressway The is a tolled expressway that connects Hyōgo and Tokushima prefectures in Japan by crossings of the Akashi Strait and Naruto Strait. Built between 1970 and 1998, it is one of the three routes of the Honshu-Shikoku Bridge Expressway Company ..., crosses over it. External links Interactive satellite photos of the site Straits of Japan Tourist attractions in Hyōgo Prefecture Landforms of Hyōgo Prefecture {{Tokushima-geo-stub ...
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Australia
Australia, officially the Commonwealth of Australia, is a Sovereign state, sovereign country comprising the mainland of the Australia (continent), Australian continent, the island of Tasmania, and numerous List of islands of Australia, smaller islands. With an area of , Australia is the largest country by area in Oceania and the world's List of countries and dependencies by area, sixth-largest country. Australia is the oldest, flattest, and driest inhabited continent, with the least fertile soils. It is a Megadiverse countries, megadiverse country, and its size gives it a wide variety of landscapes and climates, with Deserts of Australia, deserts in the centre, tropical Forests of Australia, rainforests in the north-east, and List of mountains in Australia, mountain ranges in the south-east. The ancestors of Aboriginal Australians began arriving from south east Asia approximately Early human migrations#Nearby Oceania, 65,000 years ago, during the Last Glacial Period, last i ...
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Western Australia
Western Australia (commonly abbreviated as WA) is a state of Australia occupying the western percent of the land area of Australia excluding external territories. It is bounded by the Indian Ocean to the north and west, the Southern Ocean to the south, the Northern Territory to the north-east, and South Australia to the south-east. Western Australia is Australia's largest state, with a total land area of . It is the second-largest country subdivision in the world, surpassed only by Russia's Sakha Republic. the state has 2.76 million inhabitants  percent of the national total. The vast majority (92 percent) live in the south-west corner; 79 percent of the population lives in the Perth area, leaving the remainder of the state sparsely populated. The first Europeans to visit Western Australia belonged to the Dutch Dirk Hartog expedition, who visited the Western Australian coast in 1616. The first permanent European colony of Western Australia occurred following the ...
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Horizontal Falls
The Horizontal Falls, or Horizontal Waterfalls, nicknamed the "Horries" and known as Garaanngaddim by the local Indigenous people, are an unusual natural phenomenon on the coast of the Kimberley region in Western Australia, where tidal flows cause waterfalls on the ebb and flow of each tide. The Lalang-garram / Horizontal Falls Marine Park is a protected area covering the falls and wider area. Description The falls form when seawater rushes through two short and narrow gorges which are about apart from each other. They are located in the coastal McLarty Ranges situated within Talbot Bay (Ganbadba) within the Buccaneer Archipelago. The seaward gap is about wide and the landward one is about . The natural phenomenon is caused by the changing local sea level due to tides of up to . The water builds up on one side or the other of the gaps faster than it can flow through them, creating a waterfall up to high. With each change of the tide, the direction of the falls reverses f ...
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Alderney
Alderney (; french: Aurigny ; Auregnais: ) is the northernmost of the inhabited Channel Islands. It is part of the Bailiwick of Guernsey, a British Crown dependency. It is long and wide. The island's area is , making it the third-largest island of the Channel Islands, and the second largest in the Bailiwick. It is around to the west of the La Hague on the Cotentin Peninsula, Normandy, in France, to the northeast of Guernsey and from the south coast of Great Britain. It is the closest of the Channel Islands both to France and to the United Kingdom. It is separated from Cap de la Hague by the dangerous Alderney Race (french: Raz Blanchard). As of March 2018, the island had a population of 2,019; natives are traditionally nicknamed after the cows, or else after the many rabbits seen in the island. Formally, they are known as ''Ridunians'', from the Latin . The only parish of Alderney is the parish of St Anne, which covers the whole island. The main town, St Anne, h ...
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Alderney Race
The Alderney Race is a strait that runs between Alderney and Cap de la Hague, a cape at the northwestern tip of the Cotentin Peninsula in Normandy. A strong current runs through the race north of the Passage de la Déroute, a treacherous passage separating the Cotentin from the Channel Islands. The current is intermittent, varying with the tide, and can run up to about during equinoctial tides. The French call it ''Raz Blanchard''. In Norman language, Norman French it is called ''L'Raz''. Location The Alderney Race is eight nautical miles across and located roughly between Alderney, in the Bailiwick of Guernsey, and La Hague, France. It constitutes the northeastern limit of the Gulf of Saint-Malo. Sea conditions When the wind and the race current flow in opposite directions, the sea becomes particularly chaotic: wave heights can reach four metres and have wavelengths smaller than 50 metres. The waves break with violence, thus making shipping conditions particularly dangerou ...
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Portland Bill
Portland Bill is a narrow promontory (or bill) at the southern end of the Isle of Portland, and the southernmost point of Dorset, England. One of Portland's most popular destinations is Portland Bill Lighthouse. Portland's coast has been notorious for the number of shipwrecked vessels over the centuries. The dangerous coastline features shallow reefs and the Shambles sandbank, made more hazardous due to the strong Portland tidal race. The Bill is an important way-point for coastal traffic, and three lighthouses have been built to protect shipping. The original two worked as a pair from 1716, and they were replaced in 1906 by the current one. History From Roman times, beacon fires were lit to warn ships of the danger of the Bill. A petition to Trinity House was put forward for a lighthouse in the early 18th century, but Trinity House opposed it. They later conceded that a lighthouse was needed and George I granted the patent on 26 May 1716. Trinity House issued a lease to Willi ...
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Scotland
Scotland (, ) is a country that is part of the United Kingdom. Covering the northern third of the island of Great Britain, mainland Scotland has a border with England to the southeast and is otherwise surrounded by the Atlantic Ocean to the north and west, the North Sea to the northeast and east, and the Irish Sea to the south. It also contains more than 790 islands, principally in the archipelagos of the Hebrides and the Northern Isles. Most of the population, including the capital Edinburgh, is concentrated in the Central Belt—the plain between the Scottish Highlands and the Southern Uplands—in the Scottish Lowlands. Scotland is divided into 32 administrative subdivisions or local authorities, known as council areas. Glasgow City is the largest council area in terms of population, with Highland being the largest in terms of area. Limited self-governing power, covering matters such as education, social services and roads and transportation, is devolved from the Scott ...
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Falls Of Lora
The Falls of Lora is a tidal race which forms at the mouth of Loch Etive when a particularly high tide runs out from the loch. They form white water rapids for two to five days either side of the spring tides."Falls of Lora Information"
The Falls of Lora. Retrieved 18 Sept 2011.


Description

The falls of Lora are generated when the water level in the (i.e. the open sea) drops below the level of the water in as the tide goes out. As the seawater in