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Scientists have long known that Earth tends to wobble as it spins, causing its poles to drift slightly. However, a dramatic shift occurred around the year 2000, when the North Pole turned east.
In an attempt to understand why, Ivins and his colleague Surendra Adhikari analyzed space geodetic and satellite gravimetric data from 2003 to 2015. This data allowed the researchers to unambiguously identify the causal mechanism for the Earth’s drifting poles after 2003.
The researchers wrote in their study that the Earth’s spin axis has been shifting 75-degrees eastward from its normal long-term drift direction since the early 2000s. That shift, they found, is being driven not only by melting ice sheets, but also a loss of water mass in Eurasia due to the depletion of aquifers and drought, according to a NASA release.
“This is the first time we have solid evidence that changes in land water distribution on a global scale also shift which direction the axis moves to,” Adhikari, lead author of the study, told New Scientist.
originally posted by: TonyS
a reply to: ladyinwaiting
Science, or politicized science? Who's to know anymore.
Put me in the "I'll believe it when I see it" camp.
LiveScience
Earth's Magnetic Field Could Flip in Our Lifetime
By Kelly Dickerson, Staff Writer | October 17, 2014 01:20pm ET
A pilot looking down at her plane controls and realizing magnetic north is hovering somewhere over Antarctica may sound like a scene from a science-fiction movie, but new research suggests the idea isn't so far-fetched in the relatively near future.
A magnetic field shift is old news. Around 800,000 years ago, magnetic north hovered over Antarctica and reindeer lived in magnetic south. The poles have flipped several times throughout Earth's history. Scientists have estimated that a flip cycle starts with the magnetic field weakening over the span of a few thousand years, then the poles flip and the field springs back up to full strength again. However, a new study shows that the last time the Earth's poles flipped, it only took 100 years for the reversal to happen.
The Earth's magnetic field is in a weakening stage right now. Data collected this summer by a European Space Agency (ESA) satellite suggests the field is weakening 10 times faster than scientists originally thought. They predicted a flip could come within the next couple thousand years. It turns out that might be a very liberal estimate, scientists now say. "We don't know whether the next reversal will occur as suddenly as this [previous] one did, but we also don't know that it won't," Paul Renne, director of the Geochronology Center at the University of California, Berkeley, said in a statement.
Geologists still are not sure what causes the planet's magnetic field to flip direction. Earth's iron core acts like a giant magnet and generates the magnetic field that envelops the planet. This helps protect against blasts of radiation that erupt from the sun and sometimes hurtle toward Earth. A weakening magnetic field could interrupt power grids and radio communication, and douse the planet in unusually high levels of radiation.
www.livescience.com...
originally posted by: bandersnatch
The magnetic pole and the axis pole are two different things....
They do not share the same co ordinates.....
Nor are they (either of them) static.....
Which came first...the chicken or the egg.....
Climate change or the pole shift......
nothing lasts forever.....everything is changing all the time....
People expect constants....
They are upset when reality does not allow that ....
everything changes...nothing stays constant....
Its just a wiring fault in our circuits......
Don't let it upset you....
The ONLY thing that is constant in the whole universe is,.... well,....Change.....
originally posted by: ladyinwaiting
a reply to: StoutBroux
I guess I've turned into a chicken. Even considering the repercussions of that sounds scary to me.
I think about our Earth and I want it be happy and healthy. Whatever man's contributions might be, certainly don't appear to be helpful.
Cayce went on to indicate that the rising ocean heat is directly related to the size of sun spots. He was emphatic that it was the reflection of the sun in the earth's atmosphere and not the sun's radiation that cause the currents to grow warmer.
The A.R.E. connects an episode called The Magnetic Storm from the television show Nova to a prophecy Cayce gave in reading 826-8. On the show, scientists discuss the magnetic force field that protects the Earth. This field is generated by the Earth's molten core of liquid iron some 2,000 miles beneath the surface. This magnetic force protects the Earth and every living thing from radiation storms that regularly sweep across the planet and the rest of the universe. The alarming news that the magnetic force field is weakening was predicted by Cayce.