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The Recent Changes In Earth's Magnetic Field (esa.int)
Europe's Swarm constellation of satellites have documented bigger-than-expected changes that have been occurring in the Earth's magnetic field. Earlier this year SpaceWeather.com reported that the data show clearly that "the field has weakened by about 3.5% at high latitudes over North America, while it has strengthened about 2% over Asia. The region where the field is at its weakest -- the South Atlantic Anomaly -- has moved steadily westward and weakened further by about 2%. These changes have occurred over the relatively brief period between 1999 and mid-2016."
Science writer Robert Zimmerman reports: It was already known that the field has weakened globally by about 10% since the 19th century. These changes appear to be part of that generally weakening. Some scientists have proposed that this is the beginning of an overall flip of the magnetic field's polarity, something that happens on average about every 300,000 years and last occurred 780,000 years ago. At the moment, however, we have no idea if this theory is correct.
Science writer Robert Zimmerman reports: It was already known that the field has weakened globally by about 10% since the 19th century. These changes appear to be part of that generally weakening. Some scientists have proposed that this is the beginning of an overall flip of the magnetic field's polarity, something that happens on average about every 300,000 years and last occurred 780,000 years ago. At the moment, however, we have no idea if this theory is correct.
Once Trump takes over, we'll have the strongest, most powerful magnetic field in history right here in 'murica! It's all part of his day 1 plan for making America Great Again!
How ironic - everyone was so worried about anthropogenic climate change, and then the Earth's magnetic field disappeared for three years before reappearing with the poles swapped, and killed everyone in the process...a shame we never started Lunar or Martian colonies....
There is no God, and Dirac is his prophet.
" I had considered coming here to joke about whether the anti-science deniers would come out of the woodwork to claim that the magnetic field wasn't changing at all and they were just after funding...
After decades of man's thoughtless self-indulgence, a large part of the Earth's vital magnetic field has been chopped up into small pieces for use in motors, cow trash extractors, toys and worst of all, attaching bits of paper to refrigerators. It's time to return all magnets to mother Earth to do their part in keeping us cosmic particle free.
Unfortunately, this is about the most on-topic post for this story so far! Now I better go and bury my magnetic pillow. It's a worry, because it stimulates the blood flow to my brain and without it I won't believe in homeopathy.