Earth's north magnetic pole racing towards Russia due to core flux
2009 12 26
A new research has determined that Earth's north magnetic pole is racing toward Russia at almost 40 miles (64 kilometers) a year due to magnetic changes in the planet's core.
The core is too deep for scientists to directly detect its magnetic field. But researchers can infer the field's movements by tracking how Earth's magnetic field has been changing at the surface and in space.
Now, according to a report in National Geographic News, newly analyzed data suggest that there's a region of rapidly changing magnetism on the core's surface, possibly being created by a mysterious 'plume' of magnetism arising from deeper in the core.
'It's this region that could be pulling the magnetic pole away from its long-time location in northern Canada,' said Arnaud Chulliat, a geophysicist at the Institut de Physique du Globe de Paris in France.
Magnetic north, which is the place where compass needles actually point, is near but not exactly in the same place as the geographic North Pole.
Right now, magnetic north is close to Canada's Ellesmere Island.
Navigators have used magnetic north for centuries to orient themselves when they are far from recognizable landmarks.
Although global positioning systems have largely replaced such traditional techniques, many people still find compasses useful for getting around underwater and underground where GPS satellites can't communicate.
The magnetic north pole had moved little from the time scientists first located it in 1831.
Then in 1904, the pole began shifting northeastward at a steady pace of about 9 miles (15 kilometers) a year.
In 1989 it sped up again, and in 2007 scientists confirmed that the pole is now galloping toward Siberia at 34 to 37 miles (55 to 60 kilometers) a year.
A rapidly shifting magnetic pole means that magnetic-field maps need to be updated more often to allow compass users to make the crucial adjustment from magnetic north to true North.
Geologists think Earth has a magnetic field because the core is made up of a solid iron center surrounded by rapidly spinning liquid rock.
This creates a 'dynamo' that drives our magnetic field.
Scientists had long suspected that, since the molten core is constantly moving, changes in its magnetism might be affecting the surface location of magnetic north.
Although the new research seems to back up this idea, Chulliat is skeptical whether magnetic north will eventually cross into Russia.
Oceans charge up new theory of magnetism
Has The Magnetic Pole Reversal Already Begun? South Atlantic Anomaly Could be First Evidence - Part I
Earth's Magnetic Field Is Fading Fast
A Bird's Eye View Of Magnetic Earth
Earth’s Weakening Magnetic Field Contributes to Extreme Weather
Magnetic energy? Perhaps
The Makings of a Pole Reversal; “Increased Solar Activity” and “Decreased Magnetic Field” - Part III
Latest News from our Front Page
Horrifying accidents at infectious disease labs hidden from the public, ‘cloaked in secrecy’
2014 08 26
Literally hundreds of incidents involving viruses, bacteria and toxins that pose major bioterror risks to both people and agriculture have been reported to federal regulators from 2008 through 2012, according to government reports obtained and reviewed by USA Today.
More than half of the over 1,100 incidents were serious enough that laboratory workers had to have medical evaluations and/or treatment, the ...
Those Who Know They’re Dreaming Are Savvier When Awake
2014 08 26
It’s probably fair to assume that at this moment, you are, in fact, awake. You’re reading; you’re scrolling; sometime in the not-too-distant past, you somehow made your way to The Atlantic’s website. All waking activities.
But let’s say, hypothetically, that as you’re reading this, the floor and everything else beneath you dissolve, leaving your body floating where your chair had been ...
Kiev’s bloody eastern Ukraine campaign
2014 08 26
Russia delivered humanitarian aid to the besieged city of Lugansk as fighting between the Ukrainian army and self-defense forces continues in eastern Ukraine. The conflict has claimed the lives of at least 2,000 people and displaced over 300,000.
VIDEO: Ukraine: Russian aid handed out in Lugansk
Tuesday, August 26
The latest UN figures show that the number of killed and wounded ...
History Repeats: Dead Blondes on a Mountain Top
2014 08 26
The blonds of Iraq; hunted like dogs to the top of a mountain.
The shocking headline from the August 14 London Daily Mail declared:
’ISIS want to impregnate Yazidi women and smash our blond bloodline’: Fears grow for the 300 women kidnapped from Sinjar’
The Yazidi minority of Iraq is of Aryan descent (like most Europeans) and has retained much of its ...
Naturally High Fluoride Levels in Private Wells May Be Linked With IQ Decline
2014 08 26
Certain kinds of granite contain high levels of fluoride, increasing the concentration in private wells drawing it from the water. Newly available data, released in recent months, indicates dangerously high levels of fluoride in private wells. In some cases, the wells contain more than double the level that the U.S. Environmental Protection Agency has deemed the acceptable maximum exposure level ...
|More News » |