Posted on 12/12/2003 6:26:01 PM PST by NormsRevenge
SAN FRANCISCO - The strength of the Earth's magnetic field has decreased 10 percent over the past 150 years, raising the remote possibility that it may collapse and later reverse, flipping the planet's poles for the first time in nearly a million years, scientists said Thursday.
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At that rate of decline, the field could vanish altogether in 1,500 to 2,000 years, said Jeremy Bloxham of Harvard University.
Hundreds of years could pass before a flip-flopped field returned to where it was 780,000 years ago. But scientists at a meeting of the American Geophysical Union cautioned that scenario is an unlikely one.
"The chances are it will not," Bloxham said. "Reversals are a rare event."
Instead, the weakening, measured since 1845, could represent little more than an "excursion," or lull, which can last for hundreds of years, said John Tarduno of the University of Rochester.
Such a lull could still have significant effects, especially in regions where the weakening is most pronounced.
Over the southern Atlantic Ocean, a continued weakening of the magnetic field has diminished the shielding effect it has locally in protecting the Earth from the natural radiation that bombards our planet from space, scientists said.
As a result, satellites in low-Earth orbit are left vulnerable to that radiation as they pass over the region, known as the South Atlantic anomaly.
Among the satellites that have fallen prey to the harmful effects was a Danish satellite designed, ironically, to measure the Earth's magnetic field, Bloxham said.
The weakening if coupled with a subsequently large influx of radiation in the form of protons streaming from the sun can also affect the chemistry of the atmosphere, said Charles Jackman of NASA (news - web sites)'s Goddard Space Flight Center.
That can lead to significant but temporary losses of atmospheric ozone, he said.
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Hmmmm....
I don't know what to thing about this new article that came out today (Feb 27,2005). If this is true ? My advise is to pray to GOD for forgiveness and protection , before darkness comes. We need confirmation ! I don't know.
'EARTH MAGNETIC FIELD REVERSAL'
http://www.pureenergysystems.com/news/2005/02/27/6900064_Magnet_Pole_Shift/
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similar, later topics:
Earth's Magnetic Field Weakens 10 Percent (and some other stuff)
Yahoo News | 12/12/03 | Andrew Bridges - AP
Posted on 12/12/2003 6:26:01 PM PST by NormsRevenge
http://www.freerepublic.com/focus/f-chat/1039487/posts
Earth's magnetic poles on verge of flipping
World Net Daily | December 12, 2003
Posted on 12/13/2003 8:38:30 PM PST by gitmo
http://www.freerepublic.com/focus/f-news/1039977/posts
Pole reversal: Feared "flip" of Earth's magnetic field takes 7,000 years [DOOM!]
Agence France-Presse | April 7, 2004 | AFP
Posted on 04/07/2004 9:13:52 PM PDT by AntiGuv
http://www.freerepublic.com/focus/f-news/1113501/posts
NYT: COLLAPSE OF THE EARTH'S MAGNETIC FIELD ACCELERATES (Via Drudge)
Drudge Report | 7/12/04 | Drudge
Posted on 07/12/2004 4:05:31 PM PDT by mkj6080
http://www.freerepublic.com/focus/f-news/1170023/posts
Collapse of Magnetic Field Accelerates
New York Times... | 7/12/04
Posted on 07/12/2004 7:44:32 PM PDT by Cheetah1
http://www.freerepublic.com/focus/f-news/1170131/posts
Anomalies hint at magnetic pole flip...the way minerals are aligned in ancient rock shows that the planet's magnetic dipole occasionally disappears altogether, leaving a much more complicated field with many poles all over the planet. When the dipole comes back into force, the north and south poles can swap places... Journal reference: Nature (vol 416, p 620)
by Nicola Jones
New Scientist
10 April 02
Movement of North Magnetic Pole is acceleratingAfter some 400 years of relative stability, Earth's North Magnetic Pole has moved nearly 1,100 kilometers out into the Arctic Ocean during the last century and at its present rate could move from northern Canada to Siberia within the next half-century. If that happens, Alaska may be in danger of losing one of its most stunning natural phenomena the Northern Lights.
PhysOrg
New Scientist
December 9, 2005
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OMG, we are all gonna die!
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Just updating the GGG info, not sending a general distribution. |
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