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U etogo termina sushestvuyut i drugie znacheniya sm Atoll znacheniya Ato ll korallovyj ostrov libo arhipelag imeyushij vid sploshnogo ili razorvannogo kolca okruzhayushego lagunu Tochnee atoll predstavlyaet soboj vozvyshenie na dne okeana uvenchannoe korallovoj nadstrojkoj obrazuyushej rif s gruppoj ostrovkov motu razobshyonnyh prolivami Eti prolivy soedinyayut okean s lagunoj Esli prolivov net to susha obrazuet sploshnoe kolco v etom sluchae voda v lagune mozhet byt menee solyonoj chem v okeane Vozvyshenie na dne okeana obychno imeet formu konusa obrazovannogo potuhshim vulkanom Atoll Nukuoro v MikroneziiPosledovatelnye stadii formirovaniya atolla vulkanicheskij ostrov korallovyj rif yadernyj atoll atollObrazovanie atolla po Charlzu Darvinu Korally atollov dovolno trebovatelny k sochetaniyu prirodnyh uslovij temperature vozduha i vody chistote vody postoyanstvu solyonosti okeanicheskih vod a takzhe ih dinamike RaspredelenieRifoobrazuyushie korally budut procvetat tolko v teplyh tropicheskih i subtropicheskih vodah okeanov i morej i poetomu atolly vstrechayutsya tolko v tropikah i subtropikah Atolly vstrechayutsya v osnovnom v vodah Tihogo i Indijskogo okeanov V Atlanticheskom okeane net bolshih grupp atollov krome vosmi atollov k vostoku ot Nikaragua Samym severnym atollom mira yavlyaetsya atoll Kure 28 24 s sh vmeste s drugimi atollami severo zapadnyh gavajskih ostrovov Samymi yuzhnymi atollami mira yavlyayutsya rif angl 29 58 yu sh i blizlezhashij rif angl v 29 29 yu sh v Tasmanovom more oba iz kotoryh yavlyayutsya chastyu territorii ostrovov Korallovogo morya EtimologiyaSlovo atoll proishodit iz maldivskogo slova atolu އ ތ ޅ chto oznachaet ladon Pervoe zaregistrirovannoe ispolzovanie etogo slova v anglijskom yazyke bylo v 1625 godu Charlz Darvin vvyol etot termin v svoej monografii Struktura i rasprostranenie korallovyh rifov On priznal korennoe proishozhdenie slova i opredelil ego kak krugluyu gruppu korallovyh ostrovkov Stroenie atollaTipichnyj atoll sostoit iz tryoh chastej vneshnego sklona rifa rifovoj platformy i laguny Vysota atolla obychno ne prevyshaet 3 4 metrov nad srednim urovnem okeana Atolly mogut imet raznoobraznye konfiguracii i razmery Odin iz krupnejshih atollov na Zemle Kvadzhalejn Menshikova v arhipelage Marshallovy ostrova dostigaet 2336 km iz kotoryh 92 prihoditsya na lagunu vytyanutuyu na 300 km Summarnaya ploshad 92 ostrovkov etogo atolla 14 5 km Drugoj krupnyj atoll Rangiroa Rangiroj v arhipelage Tuamotu zanimaet 1639 km a ego 241 ostrovok zanimaet 43 km Korallovye rify takih krupnyh atollov obramlyayut podnyatie na dne okeana yavlyayusheesya vulkanicheskim plato a ne konusom otdelnogo vulkana Za isklyucheniem nebolshih atollov ploshad rifov obychno sostavlyaet neskolko procentov ot ploshadi samih atollov a na dolyu sushi chasto prihoditsya lish nichtozhnaya chast Odnako byvayut i isklyucheniya V sluchae nebolshogo atolla Pingelap v vostochnoj chasti Mikronezii na sushu sostoyashuyu iz rifov i soedinyayushih ih peschanyh kos prihoditsya okolo 3 4 obshej ploshadi atolla Ostrova atolla nizmenny ih vozvysheniya ne prevyshayut 5 metrov Atolly obychno obrazuyutsya putyom obrastaniya vulkanicheskogo ostrova korallovym rifom formiruyushim kolcevoj poyas Chasto eto soprovozhdaetsya pogruzheniem vulkanicheskoj osnovy pod vodu Esli takogo pogruzheniya ne proishodit to formiruetsya s vulkanicheskim ostrovom vnutri laguny Nebolshoe ponizhenie urovnya vody ili podnyatie tektonicheskoj osnovy atolla privodit k prevrasheniyu korallovogo rifa v atoll Dalnejshee podnyatie sushi mozhet privesti k formirovaniyu podnyatogo atolla Esli zhe atoll pogruzhaetsya pod vodu to formiruetsya podvodnaya banka to est otmel kotoraya mozhet byt nazvana pogruzhyonnym atollom PrimechaniyaGerald Henry Blake Maritime Boundaries World Boundaries angl Routledge 1994 192 p ISBN 978 0 415 08835 0 15 aprelya 2022 goda Piotr Migon Geomorphological Landscapes of the World angl Springer Science amp Business Media 2010 01 22 371 p ISBN 978 90 481 3055 9 15 aprelya 2022 goda A P Gorkin Enciklopediya Geografiya bez illyustracij M ACT Rosmen 2008 1374 s ISBN 5353024435 Darwin Charles R 1842 The structure and distribution of coral reefs Being the first part of the geology of the voyage of the Beagle under the command of Capt Fitzroy R N during the years 1832 to 1836 Darwin Online London Smith Elder and Co neopr Data obrasheniya 24 dekabrya 2018 25 sentyabrya 2006 goda LiteraturaIgnatev G M Tropicheskie ostrova Tihogo okeana M Mysl 1978 270 c Scott G A J Rotondo G M USA Washington D C Smithsonian Institution 1983 Fosberg G USA Washington D C Smithsonian Institution 1994 Rapaport Moshe USA Washington D C Smithsonian Institution 1990 World Boundary Series angl Blake Gerald Henry Routledge 1994 Vol 5 Maritime Boundaries ISBN 978 0 415 08835 0 Charles Darwin The structure and distribution of coral reefs Being the first part of the geology of the voyage of the Beagle under the command of Capt Fitzroy R N during the years 1832 to 1836 angl London Smith Elder amp Co 1842 isp Caracas Venezuela Instituto Nacional de Parques INPARQUES 2007 Arhivirovano iz originala 24 aprelya 2008 goda David Cara Caroline Martha Funafuti or Three Months On A Coral Atoll an unscientific account of a scientific expedition angl London angl 1899 ISBN 978 1 151 25616 4 Finckh Dr Alfred Edmund TO THE EDITOR OF THE HERALD The Sydney Morning Herald angl National Library of Australia p 6 Cantrell Carol Finckh Alfred Edmund 1866 1961 angl Australian Dictionary of Biography at Australian National University National Centre of Biography 1996 Rodgers K A Cantrell Carol Alfred Edmund Finckh 1866 1961 Leader of the 1898 Coral Reef Boring Expedition to Funafuti angl journal Historical Records of Australian Science Vol 7 P 393 403 doi 10 1071 HR9890740393 Presidential Proclamation 8336 angl The White House Weekly Compilation of Presidential Documents angl Vol 45 1 marta 2009 goda Dobbs David 2005 Reef Madness Charles Darwin Alexander Agassiz and the Meaning of Coral Pantheon ISBN 0 375 42161 0 Fairbridge R W 1950 Recent and Pleistocene coral reefs of Australia J Geol 58 4 330 401 McNeil F S 1954 Organic reefs and banks and associated detrital sediments Amer J Sci 252 7 385 401 SsylkiMediafajly na Vikisklade Atolly Enciklopedicheskij slovar Brokgauza i Efrona v 86 t 82 t i 4 dop SPb 1890 1907 Formation of Bermuda reefs Darwin s Volcano a short video discussing Darwin and Agassiz coral reef formation debate
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