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Orion

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Como sempre, juízo e cautela. Mas não deixa de ser interessante!!



gordon-ramsay-fuck-off.gif


>3:10... Cuidado! Podem ir ao WC e quando saírem de lá o campo magnético da Terra colapsou e o índice UV 120 está a esturricar tudo lá fora com vulcões em erupção por todo o lado!!!

Leiam (literalmente) a frase seguinte do artigo, deliberadamente omitido pelo autor -> https://news.berkeley.edu/2014/10/14/earths-magnetic-field-could-flip-within-a-human-lifetime/

Imagine the world waking up one morning to discover that all compasses pointed south instead of north.

It’s not as bizarre as it sounds. Earth’s magnetic field has flipped – though not overnight – many times throughout the planet’s history.

Os tipos da 'net têm mais certezas que a malta que 'perde' o tempo a estudar o tópico -> https://www.space.com/earth-magnetic-field-unlikely-to-flip (mais recente) & https://ec.europa.eu/research-and-i...etic-poles-could-start-flip-what-happens-then

Our planet’s magnetic field is predominantly created by the flow of liquid iron inside the core. It has always been a feature of our planet, but it has flipped in polarity repeatedly throughout Earth’s history. Each time it flips – up to 100 times in the past 20 million years, while the reversal can take about 1,000 years to complete – it leaves fossilised magnetisation in rocks on Earth.
For a polarity reversal to occur, the magnetic field needs to weaken by about 90% to a threshold level. This process can take thousands of years, and during this time, the lack of a protective magnetic shield around our planet allows more cosmic rays – high-energy particles from elsewhere in the universe – to hit us.
‘The geomagnetic field has been losing 30 percent of its intensity in the last 3,000 years,’ said Dr Thouveny. ‘From this value, we predict it will drop to near zero in a few centuries or a millennia.’

7:05... -> https://www.discovermagazine.com/the-sciences/plutos-weird-atmosphere-just-collapsed

First, some background. Astronomers have long known that Pluto’s atmosphere expands as it approaches the sun and contracts as it recedes. When the sun heats its icy surface, it sublimates, releasing nitrogen, methane and carbon dioxide into the atmosphere. When it moves away, the atmosphere is thought to freeze and fall out of the sky in what must be one of the most spectacular ice storms in the solar system.

Haja paciência para o resto...
 

Orion

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Geological studies have shown that the geomagnetic field has reversed 10 times in the last 2.6 million years alone. The last time was about 780,000 years ago — an event known as the Brunhes-Matuyama reversal.

But although the process is linked to movements in the molten core, it isn’t well understood — and scientists aren’t sure when the next reversal will occur.

“The Earth’s magnetic field reverses on average every 300 to 400 thousand years,” explained Adrian Muxworthy, a professor of Earth and planetary magnetism at Imperial College London who wasn’t involved in the study. “But it’s chaotic. It isn’t regular. There have been periods where it hasn’t reversed for up to 30 million years, but we’re kind of due one.”

The geological records of previous reversals show it can take 500 to 2,000 years for the Earth’s magnetic field to completely reverse by growing gradually weaker in the prevailing direction and gradually stronger in the opposite direction, he said.

-> https://www.nbcnews.com/science/sci...-probably-arent-flip-scientists-say-rcna35673
 

Younger Dryas

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“It would actually be quite exciting,” Muxworthy said. “Just as we now get the Northern and Southern Lights, we’d see them at all latitudes, including over the equator.”

Nilsson cautions that while his study of the South Atlantic Anomaly suggests it will fade away without trouble in a few hundred years, there’s still a possibility that the Earth’s magnetic field will start to reverse anyway, although scientists see no sign that it will.

But “we can definitely be wrong,” he said.
 

Orion

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Como sempre, juízo e cautela. Mas não deixa de ser interessante!!



>3:10... Cuidado! Podem ir ao WC e quando saírem de lá o campo magnético da Terra colapsou e o índice UV 120 está a esturricar tudo lá fora com vulcões em erupção por todo o lado!!!

Novamente, e traduzo de forma rasca: 'só poderemos ter meses ou semanas de aviso' (3:15).

O vídeo é o contrário de juízo e cautela. Mesmo que os cientistas estejam errados (na inversão), como bem tentas enfatizar, não adotam esse prazo curto. É algo para centenas de anos, no mínimo.

A premissa do vídeo (desastre iminente) é ficção. Clickbait com omissões e invenções (como a atmosfera de Plutão).
 
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StormRic

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