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Portland Reef
The Portland Reef (french: Banc Portland) is a submerged shoal not rising above the surface in the Gambier Islands in French Polynesia. It is located in the far southeast of the Tuamotu group archipelago, about 68 km southeast from the Gambier Islands, and 30 km SSE from Temoe Atoll, below the Tropic of Capricorn The Tropic of Capricorn (or the Southern Tropic) is the circle of latitude that contains the subsolar point at the December (or southern) solstice. It is thus the southernmost latitude where the Sun can be seen directly overhead. It also reac .... The Portland Reef is made up of a submarine atoll structure lying at a depth of about 10 m. Refere ...
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Ocean Bank (topography)
An ocean bank, sometimes referred to as a fishing bank or simply bank, is a part of the seabed that is shallow compared to its surrounding area, such as a shoal or the top of an seamount, underwater hill. Somewhat like continental margin, continental slopes, ocean bank slopes can upwelling, upwell as Tide#Current, tidal and other flows intercept them, sometimes resulting in nutrient-rich currents. Because of this, some large banks, such as Dogger Bank and the Grand Banks of Newfoundland, are among the richest fishing grounds in the world. There are some banks that were reported in the 19th century by navigators, such as Wachusett Reef, whose existence is doubtful. Types Ocean banks may be of volcano, volcanic nature. Banks may be Carbonate platform, carbonate or Continental shelf#Sediments, terrigenous. In tropical areas some banks are submerged atolls. As they are not associated with any landmass, banks have no outside source of sediments. Carbonate banks are typically platfo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gambier Islands
The Gambier Islands ( or ) are an archipelago in French Polynesia, located at the southeast terminus of the Tuamotu archipelago. They cover an area of , and are made up of the Mangareva Islands, a group of high islands remnants of a caldera along with islets on the surrounding fringing reef, and the uninhabited Temoe atoll, which is located 45 km (28 mi) south-east of the Mangareva Islands. The Gambiers are generally considered a separate island group from Tuamotu both because their culture and language (Mangarevan) are much more closely related to those of the Marquesas Islands, and because, while the Tuamotus comprise several chains of coral atolls, the Mangareva Islands are of volcanic origin with central high islands. Administratively, the Gambier Islands are inside the commune of Gambier, which also includes several atolls in the Tuamotu Archipelago. The town hall (''mairie'') of the commune of Gambier is located on Mangareva, in the Gambier Islands. The population of th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
French Polynesia
)Territorial motto: ( en, "Great Tahiti of the Golden Haze") , anthem = , song_type = Regional anthem , song = " Ia Ora 'O Tahiti Nui" , image_map = French Polynesia on the globe (French Polynesia centered).svg , map_alt = Location of French Polynesia , map_caption = Location of French Polynesia (circled in red) , mapsize = 290px , subdivision_type = Sovereign state , subdivision_name = , established_title = Protectorate proclaimed , established_date = 9 September 1842 , established_title2 = Territorial status , established_date2 = 27 October 1946 , established_title3 = Collectivity status , established_date3 = 28 March 2003 , established_title4 = Country status (nominal title) , established_date4 = 27 February 2004 , official_languages = French , regional_languages = , capital = Papeete , coordinates = , largest_city = Fa'a'ā , demonym = French Polynesian , ethnic_groups = 66.5% unmixed Polynesians7.1% mixed Polynesians9.3% Demis1 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tuamotu
The Tuamotu Archipelago or the Tuamotu Islands (french: Îles Tuamotu, officially ) are a French Polynesian chain of just under 80 islands and atolls in the southern Pacific Ocean. They constitute the largest chain of atolls in the world, extending (from northwest to southeast) over an area roughly the size of Western Europe. Their combined land area is . This archipelago's major islands are Anaa, Fakarava, Hao and Makemo. The Tuamotus have approximately 16,000 inhabitants. The islands were initially settled by Polynesians, and modern Tuamotuans have inherited from them a shared culture and the Tuamotuan language. The Tuamotus are a French overseas collectivity. History The early history of the Tuamotu islands is generally unknown. Archaeological findings suggest that the western Tuamotus were settled from the Society Islands as early as 900 CE or as late as 1200 CE. DNA evidence suggests that they were settled about 1110 CE. On the islands of Rangiroa, Manihi and Mataiva, t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Temoe (Gambier Islands)
Temoe, or Te Moe, is a small atoll of the Gambier Islands in French Polynesia. It is located in the far southeast of the Tuamotu group archipelago. It lies about 37 km southeast from the Gambier Islands and more than southeast from Mataiva, at the other end of the Tuamotu archipelago. Temoe Atoll is trapezoidal in shape and bound by a continuous reef with many small shallow spillways. It is in length and has a maximum width of . The lagoon has a maximum depth of . Its islands are low and flat and the lagoon has no navigable pass to enter it. Temoe is permanently uninhabited. Administratively it belongs to the commune of the Gambier Islands. southwest of Temoe Atoll lies Portland Reef, a submerged shoal lying at a depth of about . History Temoe was formerly inhabited. There are ancient Polynesian archaeological remains on this lonely atoll; foremost among these are temple structures (marae). It is said that buccaneer Edward Davis might have arrived at Temoe and Mang ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tropic Of Capricorn
The Tropic of Capricorn (or the Southern Tropic) is the circle of latitude that contains the subsolar point at the December (or southern) solstice. It is thus the southernmost latitude where the Sun can be seen directly overhead. It also reaches 90 degrees below the horizon at solar midnight on the June Solstice. Its northern equivalent is the Tropic of Cancer. The Tropic of Capricorn is one of the five major circles of latitude marked on maps of Earth. Its latitude is currently south of the Equator, but it is very gradually moving northward, currently at the rate of 0.47 arcseconds, or 15 metres, per year. Less than 3% of the world's population lives south of it; this is equivalent to about 30% of the population of the Southern Hemisphere. Name When this line of latitude was named in the last centuries BC, the Sun was in the constellation Capricornus at the December solstice. This is the date each year when the Sun reaches zenith at this latitude, the southernmost l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Landforms Of The Gambier Islands
A landform is a natural or anthropogenic land feature on the solid surface of the Earth or other planetary body. Landforms together make up a given terrain, and their arrangement in the landscape is known as topography. Landforms include hills, mountains, canyons, and valleys, as well as shoreline features such as bays, peninsulas, and seas, including submerged features such as mid-ocean ridges, volcanoes, and the great ocean basins. Physical characteristics Landforms are categorized by characteristic physical attributes such as elevation, slope, orientation, stratification, rock exposure and soil type. Gross physical features or landforms include intuitive elements such as berms, mounds, hills, ridges, cliffs, valleys, rivers, peninsulas, volcanoes, and numerous other structural and size-scaled (e.g. ponds vs. lakes, hills vs. mountains) elements including various kinds of inland and oceanic waterbodies and sub-surface features. Mountains, hills, plateaux, and plains are t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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