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The Herky-Jerky Weirdness of Earth’s Magnetic Field
Eos ^ | 21 December 2020 | Jenessa Duncombe

Posted on 12/23/2020 12:38:01 PM PST by BenLurkin

As astronomers peering into Earth’s interior, there is no way for them to “feel” the true nature of the core.

...

Scientists have long been on this quest, sometimes with fatal consequences. Explorers of old perished trying to set up monitoring stations in far-flung locales, like the doomed English explorer Sir John Franklin, whose expedition to take magnetic observations of the North Pole in 1845 ended with 129 men dead and two ships lost.

As soon as long-lasting ground observatories sprung up around the world, scientists noticed strange deviations in the field, including for example, that our magnetic North and South Poles roam freely around the planet. It’s true that the poles sit off-kilter to Earth’s rotational axes because of the uneven and turbulent flow in the core, but they also drift gradually as the core’s dynamics swirl field lines. Last century, the magnetic North Pole paraded through the Canadian Arctic, and since the 2000s, it’s been sauntering across the Arctic Ocean.

But occasionally, this gradual movement accelerates seemingly at random, and the drift of Earth’s magnetic field skirts in another direction. These diversions are called geomagnetic jerks.

Scientists also call the jerks “V-shaped” events based on their appearance in plots of the field’s rate of change over time. The events usually last between 1 and 3 years, and the first documented case was recorded in 1902. Dozens of jerks have happened since.

The last jerk was in 2016, when it jostled the field and dramatically shifted the North Pole drift. The event was rather inconvenient because scientists had just issued a 5- year model of Earth’s magnetic field called the World Magnetic Model (WMM). The WMM team had to update the model ahead of schedule to avoid unacceptable navigational errors.

(Excerpt) Read more at eos.org ...


TOPICS: Astronomy; Science
KEYWORDS: astronomy; gps; magneticfield; magnetism; poleshift; potsdamgravitypotato; science

1 posted on 12/23/2020 12:38:01 PM PST by BenLurkin
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2 posted on 12/23/2020 12:38:56 PM PST by BenLurkin (The above is not a statement of fact. It is either opinion, or satire. Or both.)
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To: SunkenCiv
ping


3 posted on 12/23/2020 12:39:43 PM PST by BenLurkin (The above is not a statement of fact. It is either opinion, or satire. Or both.)
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To: BenLurkin

This is just further Proof that models don’t work.


4 posted on 12/23/2020 12:43:28 PM PST by Pez149
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To: BenLurkin

I always wondered about this verse. God says ‘Earth - turn off your magnet.’

2 Peter 3:10
But the day of the Lord will come like a thief. The heavens will disappear with a roar; the elements will be destroyed by fire, and the earth and everything done in it will be laid bare.


5 posted on 12/23/2020 12:57:29 PM PST by time4good
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To: BenLurkin

"The last jerk was in 2016..."

6 posted on 12/23/2020 1:01:04 PM PST by fishtank (The denial of original sin is the root of liberalism. )
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To: fishtank

Crime against humanity to post such things without eye bleach directly afterward


7 posted on 12/23/2020 1:11:43 PM PST by varyouga
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To: BenLurkin
From a quick search on Google:
Some studies have found correlations between changes in the Earth's magnetic field and climate parameters. ... Changes in the Earth's magnetic field directly influence the ionosphere, the charged portion of the upper atmosphere, and the magnetosphere, the bubble around the Earth that shields us from the solar wind.

The moving and changing magnetic fields are the cause of climate change, which has always been changing.

8 posted on 12/23/2020 2:03:26 PM PST by aimhigh (THIS is His commandment . . . . 1 John 3:23)
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To: fishtank

It’s like a trip to the zoo without leaving home.


9 posted on 12/23/2020 2:13:19 PM PST by 2 Kool 2 Be 4-Gotten
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To: BenLurkin

If you stand at the north magnetic pole and hold an old fashioned magnetic compass, does it spin? Can it point any way but south?


10 posted on 12/23/2020 2:50:50 PM PST by JimRed (TERM LIMITS, NOW! Build the Wall Faster! TRUTH is the new HATE SPEECH.)
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To: JimRed

If allowed to move in all axes, it points down.


11 posted on 12/23/2020 3:30:41 PM PST by oldbill
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To: Pez149

Models work perfectly as they’re designed.

They just don’t match nature very well.


12 posted on 12/23/2020 3:46:53 PM PST by MV=PY (The Magic Question: Who's paying for it?)
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To: varyouga

13 posted on 12/23/2020 3:59:07 PM PST by EEGator
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To: EEGator

This model is perfect in any and every way imaginable.


14 posted on 12/23/2020 9:57:52 PM PST by politicianslie (I took HCQ+Zn on the 3rd day of symptoms. HCQ+Zn is a grand slam home run CURE!)
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To: BenLurkin

Thanks!

https://www.freerepublic.com/tag/potsdamgravitypotato/index


15 posted on 12/24/2020 9:27:12 AM PST by SunkenCiv (Imagine an imaginary menagerie manager imagining managing an imaginary menagerie.)
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