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Plataforma de gelo Ross Referências | Menu de navegação«Big ice shelf's disappearing act»«Antarctic Hazards»«Massive ice shelf 'may collapse without warning'»expandindo-oe

Plataformas de gelo da AntártidaExtremos da Terra


plataforma de geloAntártidasuperfícieFrançaDependência de Rossterritório da Antártida reivindicadoNova ZelândiaJames Clark Ross28 de janeiro1841ciclos de Milankovitchplataforma Larsen










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Plataforma de gelo Ross




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Mapa da Antártida com a plataforma de gelo Ross marcada com um X vermelho.


A plataforma de gelo Ross (ou plataforma de Ross) é uma plataforma de gelo situada na Antártida. É a maior do mundo[1], tendo cerca de 487.000 km² de superfície, o que equivale em extensão ao território da França.[2] A maior parte da plataforma localiza-se na Dependência de Ross, um território da Antártida reivindicado pela Nova Zelândia.


A plataforma deve o seu nome a James Clark Ross, que a descobriu a 28 de janeiro de 1841.


Perfurações levadas a cabo na plataforma de Ross mostraram que a camada de gelo desapareceu e reapareceu diversas vezes nos últimos dez milhões de anos, muitas vezes acompanhando ciclos de Milankovitch[1]. Apesar de a plataforma ter centenas de metros de espessura, o seu colapso pode ser rápido, como aconteceu com a plataforma Larsen em 2002[3].



Referências |



  1. ↑ ab Griggs, Kim (4 de dezembro de 2006). «Big ice shelf's disappearing act». Consultado em 18 de agosto de 2008 


  2. ↑ «Antarctic Hazards». Consultado em 18 de agosto de 2008 


  3. ↑ «Massive ice shelf 'may collapse without warning'». 29 de novembro de 2006. Consultado em 18 de agosto de 2008 




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