A maré negra no Golfo do México poderá ser um problema para as nossas águas ? Talvez.
Como todos sabem, a fuga de petróleo no Golfo do México continua sem solução apesar dos esforços.
É também sabido que a corrente do Golfo após sair do Golfo sobe ao longo da costa leste dos EUA a grande velocidade virando para o interior do Atlântico, dividindo-se em vários ramos, sendo um deles a Corrente dos Açores.
É certo que o petróleo ao longo de uma viagem de milhares de quilómetros perderá boa parte da sua nocividade, mas de qualquer forma, num cenário em que a fuga não conseguir ser estancada, as nossas águas podem vir a ser afectadas de alguma forma. Claro que nunca com a gravidade do que se está a passar no Golfo.
O NCAR (National Center for Atmospheric Research) divulgou ontem algumas simulações em modelo que mostram esse cenário, mas refira-se que alguns especialistas consideram que o que chegaria já estaria muito disperso para ser nocivo. Embora tudo isto seja novo, e ninguém tem certezas absolutas sobre esta matéria.
[ame="http://www.youtube.com/watch?v=pE-1G_476nA"]YouTube- Ocean currents likely to carry oil to Atlantic[/ame]
Algumas imagens dramáticas do Boston.com:
Mais aqui:
http://www.boston.com/bigpicture/2010/06/caught_in_the_oil.html
Como todos sabem, a fuga de petróleo no Golfo do México continua sem solução apesar dos esforços.
É também sabido que a corrente do Golfo após sair do Golfo sobe ao longo da costa leste dos EUA a grande velocidade virando para o interior do Atlântico, dividindo-se em vários ramos, sendo um deles a Corrente dos Açores.
É certo que o petróleo ao longo de uma viagem de milhares de quilómetros perderá boa parte da sua nocividade, mas de qualquer forma, num cenário em que a fuga não conseguir ser estancada, as nossas águas podem vir a ser afectadas de alguma forma. Claro que nunca com a gravidade do que se está a passar no Golfo.
O NCAR (National Center for Atmospheric Research) divulgou ontem algumas simulações em modelo que mostram esse cenário, mas refira-se que alguns especialistas consideram que o que chegaria já estaria muito disperso para ser nocivo. Embora tudo isto seja novo, e ninguém tem certezas absolutas sobre esta matéria.
[ame="http://www.youtube.com/watch?v=pE-1G_476nA"]YouTube- Ocean currents likely to carry oil to Atlantic[/ame]
Computers See Oil Spreading Far and Fast
As early as this summer, oil spewing from the floor of the Gulf of Mexico is likely to get caught up in the Gulf Loop Current and flow thousands of miles around Florida and up the East Coast, scientists warned Thursday.
The warning came from investigators at the National Center for Atmospheric Research (NCAR) in Boulder, Colorado who put their powerful computer models to the task of simulating how a liquid released from the Deepwater Horizon spill site at different depths is likely to disperse over the next weeks and months.
Last week, Adminstrator Jane Lubchenko of the National Oceanic and Atmospheric Administration observed that the first oil that became entrained in the current that loops around the Gulf before flowing out to the Atlantic as part of the Gulf Stream had become part of an eddy that cut off from the current and remains in the Gulf.
However, Synte Peacock, a member of the NCAR research team, said the six simulations by the sophisticated computer models suggested that the potential for trouble from oil in the upper 65 feet of water could be far-flung -- and fast.
"Actually," she said in a statement released by NCAR, "our best knowledge says the scope of this environmental disaster is likely to reach far beyond Florida, with impacts that have yet to be understood."
(The simulation above shows that once oil reaches the fast-flowing Loop Current, it could reach the Atlantic Coast of Florida in a matter of weeks and travel with the Gulf Stream as far north as Cape Hatteras, North Carolina, before turning east.)
NCAR emphasized that the simulations are not forecasts "because it is impossible to accurately predict the precise location of the oil weeks or months from now." Weather and ocean conditions that govern dispersal patterns -- including the Loop Current -- are too variable.
What happens to the oil in the Atlantic is the subject of more modeling work. German researcher Martin Visbeck, a member of the study team, noted that scientists have been asked about the potential impact along the coasts of Europe.
"Our assumption is that the enormous lateral mixing in the ocean together with the biological disintegration of the oil should reduce the pollution to levels below harmful concentrations," he said. "But we would like to have this backed up by numbers from some of the best ocean models."
http://news.discovery.com/earth/computers-see-oil-spreading-far-and-fast.html
Gulf oil spill news: Computer models show Gulf oil reaching East Coast
NEW ORLEANS — Computer models show oil leaking from a damaged well in the Gulf of Mexico could wind up on the East Coast and even get carried on currents across the Atlantic Ocean toward Europe.
The National Center for Atmospheric Research models showed Thursday that oil could enter the Gulf’s loop current, go around the tip of Florida and as far north as Cape Hatteras, N.C. According to researchers, oil could threaten East Coast beaches by early July, but they cautioned the models were not a forecast.
The oil could then head by Bermuda on its way to Europe.
Martin Visbeck, a research team member with the University of Kiel in Germany, says it is unlikely any oil reaching Europe would be thick enough to be harmful.
http://www.news-press.com/article/2...uter-models-show-Gulf-oil-reaching-East-Coast
Algumas imagens dramáticas do Boston.com:
Mais aqui:
http://www.boston.com/bigpicture/2010/06/caught_in_the_oil.html