10/28/2022 0 Comments Download game subsea relic for android![]() ![]() 'The amazing images created in the caves during this time have been preserved, while other art out in open areas has since eroded, making it appear that art suddenly starts 42,000 years ago.'Įarth's magnetic field is created by the movement of liquid iron in the Earth's outer core, some 1,800 miles below our feet. 'The common cave art motif of red ochre handprints may signal it was being used as sunscreen, a technique still used today by some groups. 'We think that the sharp increases in UV levels, particularly during solar flares, would suddenly make caves very valuable shelters,' said Professor Cooper. This could explain the sudden appearance of cave art around the world roughly 42,000 years ago, created by those that survived. The researchers theorise that the dramatic environmental changes may have caused early humans to seek more shelter. 'It must have seemed like the end of days,' said Professor Cooper. Ionised air – which is a great conductor for electricity – would have also increased the frequency of electrical storms. 'Early humans around the world would have seen amazing auroras, shimmering veils and sheets across the sky,' study co-lead Professor Alan Cooper, honorary researcher at the South Australian Museum. Usually confined to the polar northern and southern parts of the globe, the colourful sights would have been widespread during the breakdown of Earth's magnetic field. 'We urgently need to get carbon emissions down before such a random event happens again.'ĭazzling light shows would have been frequent in the sky during the Adams Event.Īurora borealis and aurora australis, also known as the northern and southern lights, are caused by solar winds hitting the Earth's atmosphere. 'A magnetic pole reversal or extreme change in Sun activity would be unprecedented climate change accelerants. 'Our atmosphere is already filled with carbon at levels never seen by humanity before,' he said. Professor Turney said the human-induced climate crisis is catastrophic enough without throwing major solar changes or a pole reversal in the mix. 'Incoming cosmic radiation would destroy our electric power grids and satellite networks.' 'If a similar event happened today, the consequences would be huge for modern society. 'This speed – alongside the weakening of Earth's magnetic field by around 9 per cent in the past 170 years – could indicate an upcoming reversal,' said Professor Cooper. While the magnetic poles often wander, scientists are concerned about the current rapid movement of the north magnetic pole across the Northern Hemisphere. The only other notable impact of a weakening magnetic field would be auroras at lower latitudes. However, as it will happen over a few thousand years humanity will have time to prepare for any weakening magnetic field. ![]() If it gets too weak more radiation will get to the Earth's surface and could cause cancers and other issues. However, there is a risk the field will weaken more than usual - it is variable already - during the change. In terms of the impact on human life - the biggest risk depends on how weak the field gets during its transition.Īccording to a NASA study there's no evidence it will disappear completely as 'it never has before'. North on the compass will also point to Antarctica rather than Canada. One of the biggest impacts will be on animals that use the magnetic field for navigation - such as turtles and birds. The exact impact of this flip isn't known as it hasn't happened in 780,000 years, however geologists and astronomers do have some idea. The Earth's magnetic field regularly flips poles every few hundred thousand years. With the Earth's magnetic field having weakened by around nine per cent in the past 170 years, researchers warn that the next apocalyptic polar flip 'may be just around the corner'. The British author famously wrote in The Hitchhiker's Guide to the Galaxy that '42' was the answer to life, the universe, and everything. The researchers dubbed this danger period the 'Adams Transitional Geomagnetic Event', or 'Adams Event' for short – a tribute to science fiction writer Douglas Adams. The trees revealed spikes in atmospheric radiocarbon levels, caused by the collapse of Earth's magnetic field and changing solar winds.īut preceding the flip was a weakening of the magnetic fields, causing electrical storms, crimson skies, widespread auroras and lethal cosmic radiation that frazzled our early ancestors and the Earth's wildlife. A reversal of the magnetic poles 42,000 years ago triggered catastrophic climate change and may have wiped out Neanderthals, a new study shows.Īustralian researchers have analysed the radiocarbon record from ancient trees in New Zealand that were alive when the magnetic poles flipped. ![]()
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