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Muri Lagoon
The Muri Lagoon is a lagoon in the district of Ngatangiia on the eastern coast of Rarotonga in the Cook Islands. The lagoon is a significant tourist attraction and the largest tourism revenue earner in the Cook Islands, accounting for 25% of tourism bed usage on Rarotonga. In 2015 the Cook Islands government declared the environmental condition of the lagoon a national disaster. Geography The lagoon is approximately wide has a maximum depth of . It is bounded on the north by Ngatangiia harbour, and the south by the ''motu'' of Taakoka. It contains three small islets or ''motu''. From north to south, the islets are: #Motutapu, #Oneroa, #Koromiri, The islet of Taakoka () forms the southern boundary of lagoon. The Avana and Turangi streams both flow into the lagoon. Water circulation is driven by waves breaking across the reef, with outflow through the Ngatangiia Harbour. Pollution The lagoon is heavily polluted, with nitrogen from agricultural runoff and leaking septic tanks ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rarotonga
Rarotonga is the largest and most populous of the Cook Islands. The island is volcanic, with an area of , and is home to almost 75% of the country's population, with 10,898 of a total population of 15,040. The Parliament of the Cook Islands, Cook Islands' Parliament buildings and Rarotonga International Airport, international airport are on Rarotonga. Rarotonga is a popular tourist destination with many resorts, hotels and motels. The chief town, Avarua, on the north coast, is the capital of the Cook Islands. Captain John Dibbs, master of the colonial brig ''Endeavour'', is credited as the European discoverer on 25 July 1823, while transporting the missionary Reverend John Williams (missionary), John Williams. Geography Rarotonga is a kidney-shaped volcanic island, in circumference, and wide on its longest (east-west) axis. The island is the summit of an extinct Pliocene or Pleistocene volcano, which rises from the seafloor. The island was formed between 2.3 to 1.6 million ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lagoon
A lagoon is a shallow body of water separated from a larger body of water by a narrow landform, such as reefs, barrier islands, barrier peninsulas, or isthmuses. Lagoons are commonly divided into ''coastal lagoons'' (or ''barrier lagoons'') and ''atoll lagoons''. They have also been identified as occurring on mixed-sand and gravel coastlines. There is an overlap between bodies of water classified as coastal lagoons and bodies of water classified as Estuary, estuaries. Lagoons are common coastal features around many parts of the world. Definition and terminology Lagoons are shallow, often elongated bodies of water separated from a larger body of water by a shallow or exposed shoal, reef, coral reef, or similar feature. Some authorities include fresh water bodies in the definition of "lagoon", while others explicitly restrict "lagoon" to bodies of water with some degree of salinity. The distinction between "lagoon" and "estuary" also varies between authorities. Richard A. Davis J ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ngatangiia
Ngatangiia is one of the five districts of the Cook Islands, districts that make up the island of Rarotonga in the Cook Islands. It is located in the east of the island, to the south of the districts of Matavera and Avarua, and northeast of the district of Titikaveka. References Districts of the Cook Islands Rarotonga {{CookIslands-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cook Islands
The Cook Islands is an island country in Polynesia, part of Oceania in the South Pacific Ocean. It consists of 15 islands whose total land area is approximately . The Cook Islands' Exclusive Economic Zone (EEZ) covers of ocean. Avarua is its capital. The Cook Islands is self-governing while in free association with New Zealand. Since the start of the 21st century, the Cook Islands conducts its own independent foreign and defence policy, and also has its own customs regulations. Like most members of the Pacific Islands Forum, it has no armed forces, but the Cook Islands Police Service owns a Guardian Class Patrol Boat, , provided by Australia, in order to police its waters. In recent decades, the Cook Islands have adopted an increasingly assertive and distinct foreign policy, and a Cook Islander, Henry Puna, served as Secretary General of the Pacific Islands Forum from 2021 to 2024. Most Cook Islanders are also citizens of New Zealand, but they also have the status of Coo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Avana Stream
The Avana Stream is a stream in the Ngatangiia district on Rarotonga in the Cook Islands. It flows in the Avana Valley and exits into the Muri Lagoon The Muri Lagoon is a lagoon in the district of Ngatangiia on the eastern coast of Rarotonga in the Cook Islands. The lagoon is a significant tourist attraction and the largest tourism revenue earner in the Cook Islands, accounting for 25% of tour ... at Vaikai Tapere. A water intake on the stream supplies water to half of Rarotonga's population. See also * List of rivers of the Cook Islands References Rivers of the Cook Islands Rarotonga {{CookIslands-river-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anoxic Event
An anoxic event describes a period wherein large expanses of Earth's oceans were depleted of dissolved oxygen (O2), creating toxic, euxinic ( anoxic and sulfidic) waters. Although anoxic events have not happened for millions of years, the geologic record shows that they happened many times in the past. Anoxic events coincided with several mass extinctions and may have contributed to them. These mass extinctions include some that geobiologists use as time markers in biostratigraphic dating. On the other hand, there are widespread, various black-shale beds from the mid-Cretaceous which indicate anoxic events but are not associated with mass extinctions. Many geologists believe oceanic anoxic events are strongly linked to the slowing of ocean circulation, climatic warming, and elevated levels of greenhouse gases. Researchers have proposed enhanced volcanism (the release of CO2) as the "central external trigger for euxinia." Human activities in the Holocene epoch, such as t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Landforms Of The Cook Islands
A landform is a land feature on the solid surface of the Earth or other planetary body. They may be natural or may be anthropogenic (caused or influenced by human activity). 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 oceanic basins. Physical characteristics Landforms are categorized by characteristic physical attributes such as elevation, slope, orientation, structure stratification, rock exposure, and soil type. Gross physical features or landforms include intuitive elements such as berms, cliffs, hills, mounds, peninsulas, ridges, rivers, valleys, volcanoes, and numerous other structural and size-scaled (e.g. ponds vs. lakes, hills vs. mountains) elements including various kinds of inland and oceanic waterbodi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
