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Science-Technology
See other Science-Technology Articles

Title: Magnetic North Pole Shifts, Forces Runway Closures at Florida Airport
Source: fox
URL Source: http://www.foxnews.com/scitech/2011 ... ay_Closures_at_Florida_Airport
Published: Jan 7, 2011
Author: fox
Post Date: 2011-01-07 13:06:25 by Brian S
Keywords: None
Views: 8447
Comments: 13

The planet's northern magnetic pole is drifting slowly but steadily towards Russia -- and it's throwing off planes in Florida.

Tampa International Airport was forced to readjust its runways Thursday to account for the movement of the Earth's magnetic fields, information that pilots rely upon to navigate planes. Thanks to the fluctuations in the force, the airport has closed its primary runway until Jan. 13 to change taxiway signs to account for the shift, the Federal Aviation Administration said.

The poles are generated by movements within the Earth's inner and outer cores, though the exact process isn't exactly understood. They're also constantly in flux, moving a few degrees every year, but the changes are almost never of such a magnitude that runways require adjusting, said Paul Takemoto, a spokesman for the FAA.

The magnetic fields vary from place to place. Adjustments are needed now at airports in Tampa, but they aren't immediately required at all airports across the country.

So just how often is something like this necessary? "It happens so infrequently that they wouldn't venture a guess," Takemoto told FoxNews.com. "In fact, you're the first journalist to ever ask me about it."

Takemoto was quick to point out that the change, which also was required at Tampa's smaller Peter O. Knight airport, will have no effect on passenger safety.

"You want to be absolutely precise in your compass heading," he pointed out. "To make sure the precision is there that we need, you have to make these changes."

Kathleen Bergen, another spokeswoman for the FAA, explained that runway designations and charting rely upon geomagnetic information. "Aviation is charted using latitude and longitude and the magnetic poles," she told FoxNews.com.

The busiest runway at Tampa International will be re-designated 19R/1L on aviation charts. It had been 18R/36L, indicating its alignment along the 180-degree approach from the north and the 360-degree approach from the south, explained an article in the Tampa Tribune detailing the changes. Later this month, the airport's east parallel runway and the seldom used east-west runway will be closed to change signs reflecting their new designations as well.

"The Earth's poles are changing constantly, and when they change more than three degrees, that can affect runway numbering," Bergen said.

While rejiggering the runways is a very extreme event, the fields are constantly in flux and constantly being remapped, explained Lorne McKee, a scientist with the geomagnetism division of Natural Resources Canada.

"Since the fields change relatively slowly, they're marked out at 10 degree increments," he explained. The field has swung from approximately 10 degrees east in the late 16th century to 25 degrees west in the early 19th century -- before returning to a current value of about 3 degrees west.

It wasn't immediately clear when or even if changes would be required at other airports. And even the rate of change is inconsistent, McKee said, noting that it's changing much more quickly at the poles themselves.

Beyond just sliding around the planet, the magnetic north and south poles have been known to completely flip as well; these reversals, recorded in the magnetism of ancient rocks, are unpredictable. The last one was 780,000 years ago. Are we overdue for another? No one knows.

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#1. To: Brian S (#0)

must be the Chinese. :-)

Since January 3, 2011, Republicans have controlled the power of the purse.

go65  posted on  2011-01-07   14:48:48 ET  Reply   Trace   Private Reply  


#2. To: go65 (#1)

Another insightful post from the resident pinhead.

Well, [war's] got to do something for attention, his multiple personalities aren't speaking to him any more, and his imaginary friends keep finding excuses not to come over.

Rudgear  posted on  2011-01-07   15:55:29 ET  Reply   Trace   Private Reply  


#3. To: Brian S (#0)

This makes no sense whatsoever.

Magnetic north had always varied from actual north. Magnetic north has always drifted. This is why everyone (apparently except the FAA) uses the global positioning system (GPS) rather than magnetic compasses.

This whole article demonstrates conclusively why the FAA needs to be privatized just as those functions have been privatized in Canada and the U.K.


"It's very important to remember the law is not simply what powerful people would want others to believe it is." -- Julian Assange

jwpegler  posted on  2011-01-07   16:25:07 ET  Reply   Trace   Private Reply  


#4. To: jwpegler (#3)

This makes no sense whatsoever.

Well, it is a Fox News story, so that's totally understandable.

“Reagan nearly tripled the deficit in his eight years, and never made a realistic proposal for cutting it. As the biographer Lou Cannon noted, it was unfair for critics to say that Reagan was trying to balance the budget on the backs of the poor, since ‘he never seriously attempted to balance the budget at all.’ ” - Garry Wills

Skip Intro  posted on  2011-01-07   17:59:33 ET  Reply   Trace   Private Reply  


#5. To: Rudgear (#2)

Another insightful post from the resident pinhead.

still waiting for your response in the other thread - shouldn't you pay more in taxes then someone who makes a million dollars a year since they create more jobs then you do?

Since January 3, 2011, Republicans have controlled the power of the purse.

go65  posted on  2011-01-07   19:04:58 ET  Reply   Trace   Private Reply  


#6. To: jwpegler (#3)

This makes no sense whatsoever.

Magnetic north had always varied from actual north. Magnetic north has always drifted. This is why everyone (apparently except the FAA) uses the global positioning system (GPS) rather than magnetic compasses.

This whole article demonstrates conclusively why the FAA needs to be privatized just as those functions have been privatized in Canada and the U.K.

welcome back, was wondering where you went.

NAV Canada is akin to the post office in the U.S., private, but with an exclusive ability to provide services.

Since January 3, 2011, Republicans have controlled the power of the purse.

go65  posted on  2011-01-07   19:06:39 ET  Reply   Trace   Private Reply  


#7. To: go65 (#6)

Thanks.

Just trying to feed my family.

Things have been looking a lot better over the last month.


"It's very important to remember the law is not simply what powerful people would want others to believe it is." -- Julian Assange

jwpegler  posted on  2011-01-07   19:22:07 ET  Reply   Trace   Private Reply  


#8. To: jwpegler (#3)

This whole article demonstrates conclusively why the FAA needs to be privatized just as those functions have been privatized in Canada

Canadian Ducks Make Vertical Turns.

And the sheep will bleat their submission,
Seeing the others as fools,
Not knowing nor even caring,
They've become no more than tools.

Burma Shave.

Wood_Chopper  posted on  2011-01-07   19:26:41 ET  Reply   Trace   Private Reply  


#9. To: jwpegler (#7)

Things have been looking a lot better over the last month.

I too had noticed your absence here. Good to see you around and glad to hear things are looking up for you and yours.

Godspeed!

Never swear "allegiance" to anything other than the 'right to change your mind'!

Brian S  posted on  2011-01-07   19:27:44 ET  Reply   Trace   Private Reply  


#10. To: jwpegler (#7)

Things have been looking a lot better over the last month.

good for you - same here, hiring new people for the first time since 2007.

Since January 3, 2011, Republicans have controlled the power of the purse.

go65  posted on  2011-01-07   19:55:00 ET  Reply   Trace   Private Reply  


#11. To: go65 (#10)

hiring new people for the first time since 2007.

Considering how shockingly ignorant you are about REALITY, I sincerely doubt you hire anybody.

The quote in my signature demonstrates the point, perfectly.

In the end, the Party would announce that two and two made five, and you would have to believe it. It was inevitable that they should make that claim sooner or later: the logic of their position demanded it. ... The heresy of heresies was common sense.
-- George Orwell, 1984 --

http://libertysflame.com/cgi-bin/readart.cgi?ArtNum=16281&Disp=9#C9
ME: THERE IS NO MORE MONEY.
GO65: There will be no more money when the U.S. dollar has no value, until that time we can keep printing more.

SUMMARY: Socialists refuse to accept reality.

Capitalist Eric  posted on  2011-01-07   19:59:34 ET  Reply   Trace   Private Reply  


#12. To: Capitalist Eric (#11)

Considering how shockingly ignorant you are

You spount nothing but shit.

Grats...my first and only 'bozo-ette' of the year 2011!

Never swear "allegiance" to anything other than the 'right to change your mind'!

Brian S  posted on  2011-01-07   20:01:54 ET  Reply   Trace   Private Reply  


#13. To: Brian S (#12)

You spount nothing but shit.

Grats...my first and only 'bozo-ette' of the year 2011!

From a socialist like you, I take that as a compliment.

And since you've said MANY times that you put me on bozo, I'm having a good laugh.

8^)

In the end, the Party would announce that two and two made five, and you would have to believe it. It was inevitable that they should make that claim sooner or later: the logic of their position demanded it. ... The heresy of heresies was common sense.
-- George Orwell, 1984 --

http://libertysflame.com/cgi-bin/readart.cgi?ArtNum=16281&Disp=9#C9
ME: THERE IS NO MORE MONEY.
GO65: There will be no more money when the U.S. dollar has no value, until that time we can keep printing more.

SUMMARY: Socialists refuse to accept reality.

Capitalist Eric  posted on  2011-01-07   20:04:20 ET  Reply   Trace   Private Reply  


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