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Earth not due for a geomagnetic flip in the near future, researchers show

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  Earth not due for a geomagnetic flip in the near future, researchers show Sam Wormley <swormley1@gmail.com> - 2015-11-23 21:01 -0600
    Re: Earth not due for a geomagnetic flip in the near future, researchers show jimp@specsol.spam.sux.com - 2015-11-24 03:55 +0000
    Re: Earth not due for a geomagnetic flip in the near future, researchers show "reber g=emc^2" <herbertglazier0@gmail.com> - 2015-11-24 14:14 -0800
    Re: Earth not due for a geomagnetic flip in the near future, researchers show Double-A <double-a3@hush.com> - 2015-11-24 14:54 -0800

#534967 — Earth not due for a geomagnetic flip in the near future, researchers show

Earth not due for a geomagnetic flip in the near future, researchers show
> http://phys.org/news/2015-11-earth-due-geomagnetic-flip-future.html


> The intensity of Earth's geomagnetic field has been dropping for the
> past 200 years, at a rate that some scientists suspect may cause the
> field to bottom out in 2,000 years, temporarily leaving the planet
> unprotected against damaging charged particles from the sun. This
> drop in intensity is associated with periodic geomagnetic field
> reversals, in which the Earth's North and South magnetic poles flip
> polarity, and it could last for several thousand years before
> returning to a stable, shielding intensity.
>
> With a weakened geomagnetic field, increased solar radiation might
> damage electronics—from individual pacemakers to entire power
> grids—and could induce genetic mutations. A reversal may also affect
> the navigation of animals that use Earth's magnetic field as an
> internal compass.
>
> But according to a new MIT study in the Proceedings of the National
> Academy of Sciences, the geomagnetic field is not in danger of
> flipping anytime soon: The researchers calculated Earth's average,
> stable field intensity over the last 5 million years, and found that
> today's intensity is about twice that of the historical average.
>
> This indicates that the current field intensity has a long way to
> fall before reaching an unstable level that would lead to a
> reversal.
>


-- 

sci.physics is an unmoderated newsgroup dedicated
to the discussion of physics, news from the physics
community, and physics-related social issues.

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#534977

Sam Wormley <swormley1@gmail.com> wrote:
> Earth not due for a geomagnetic flip in the near future, researchers show
>> http://phys.org/news/2015-11-earth-due-geomagnetic-flip-future.html
> 
> 
>> The intensity of Earth's geomagnetic field has been dropping for the
>> past 200 years, at a rate that some scientists suspect may cause the
>> field to bottom out in 2,000 years, temporarily leaving the planet
>> unprotected against damaging charged particles from the sun. This
>> drop in intensity is associated with periodic geomagnetic field
>> reversals, in which the Earth's North and South magnetic poles flip
>> polarity, and it could last for several thousand years before
>> returning to a stable, shielding intensity.
>>
>> With a weakened geomagnetic field, increased solar radiation might
>> damage electronics?from individual pacemakers to entire power
>> grids?and could induce genetic mutations. A reversal may also affect
>> the navigation of animals that use Earth's magnetic field as an
>> internal compass.
>>
>> But according to a new MIT study in the Proceedings of the National
>> Academy of Sciences, the geomagnetic field is not in danger of
>> flipping anytime soon: The researchers calculated Earth's average,
>> stable field intensity over the last 5 million years, and found that
>> today's intensity is about twice that of the historical average.
>>
>> This indicates that the current field intensity has a long way to
>> fall before reaching an unstable level that would lead to a
>> reversal.

Don't worry, the EVO's will save us...

Yet another much ado about nothing. 
 

-- 
Jim Pennino

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#535205

On Monday, November 23, 2015 at 7:01:31 PM UTC-8, Sam Wormley wrote:
> Earth not due for a geomagnetic flip in the near future, researchers show
> > http://phys.org/news/2015-11-earth-due-geomagnetic-flip-future.html
> 
> 
> > The intensity of Earth's geomagnetic field has been dropping for the
> > past 200 years, at a rate that some scientists suspect may cause the
> > field to bottom out in 2,000 years, temporarily leaving the planet
> > unprotected against damaging charged particles from the sun. This
> > drop in intensity is associated with periodic geomagnetic field
> > reversals, in which the Earth's North and South magnetic poles flip
> > polarity, and it could last for several thousand years before
> > returning to a stable, shielding intensity.
> >
> > With a weakened geomagnetic field, increased solar radiation might
> > damage electronics--from individual pacemakers to entire power
> > grids--and could induce genetic mutations. A reversal may also affect
> > the navigation of animals that use Earth's magnetic field as an
> > internal compass.
> >
> > But according to a new MIT study in the Proceedings of the National
> > Academy of Sciences, the geomagnetic field is not in danger of
> > flipping anytime soon: The researchers calculated Earth's average,
> > stable field intensity over the last 5 million years, and found that
> > today's intensity is about twice that of the historical average.
> >
> > This indicates that the current field intensity has a long way to
> > fall before reaching an unstable level that would lead to a
> > reversal.
> >
> 
> 
> -- 
> 
> sci.physics is an unmoderated newsgroup dedicated
> to the discussion of physics, news from the physics
> community, and physics-related social issues.

Poles have never flipped Nor will they flip 5 million years from now.YteBert

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#535229

On Monday, November 23, 2015 at 7:01:31 PM UTC-8, Sam Wormley wrote:
> Earth not due for a geomagnetic flip in the near future, researchers show
> > http://phys.org/news/2015-11-earth-due-geomagnetic-flip-future.html
> 
> 
> > The intensity of Earth's geomagnetic field has been dropping for the
> > past 200 years, at a rate that some scientists suspect may cause the
> > field to bottom out in 2,000 years, temporarily leaving the planet
> > unprotected against damaging charged particles from the sun. This
> > drop in intensity is associated with periodic geomagnetic field
> > reversals, in which the Earth's North and South magnetic poles flip
> > polarity, and it could last for several thousand years before
> > returning to a stable, shielding intensity.
> >
> > With a weakened geomagnetic field, increased solar radiation might
> > damage electronics--from individual pacemakers to entire power
> > grids--and could induce genetic mutations. A reversal may also affect
> > the navigation of animals that use Earth's magnetic field as an
> > internal compass.



The animals and birds must have found ways to cope during the preceding flips.


> > But according to a new MIT study in the Proceedings of the National
> > Academy of Sciences, the geomagnetic field is not in danger of
> > flipping anytime soon: The researchers calculated Earth's average,
> > stable field intensity over the last 5 million years, and found that
> > today's intensity is about twice that of the historical average.
> >
> > This indicates that the current field intensity has a long way to
> > fall before reaching an unstable level that would lead to a
> > reversal.
> >


Or the magnetic field might just collapse altogether like on Mars!  Then wouldn't we be up a creek?

Double-A

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