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Earth’s magnetic pole shifts, screws up runway at Florida airport
The Lookout | Liz Goodwin

Posted on 01/08/2011 6:09:58 AM PST by equaviator

An airport in Tampa, Florida, has had to temporarily close its runways to keep up with Earth's magnetic north pole, which is drifting toward Russia at a rate of 40 miles per year.

Fox News reports that the international airport was forced to adjust the signs on its busiest runway Thursday because pilots depend on the magnetic fields to navigate. The runway will be closed until Jan. 13, and will re-open with new taxiway signs that indicate its new location on aviation charts, the Tampa Bay Tribune reports.

Paul Takemoto, a spokesman for the FAA, says the Earth's magnetic fields are constantly in flux -- but rarely so much so that runway signage needs to be changed. "You want to be absolutely precise in your compass heading," he told Fox. "To make sure the precision is there that we need, you have to make these changes."

"The Earth's poles are changing constantly, and when they change more than three degrees, that can affect runway numbering," FAA spokesperson Kathleen Bergen told Fox News. It's unclear whether any other airports will have to adjust their runways.

Earth's magnetic field, which still flummoxes those who study it, "is thought to be generated deep inside the planet," LiveScience writer Jeanna Bryner explains. "An inner core of solid iron is surrounded by an outer core of molten iron. They rotate at different rates, and the interaction between the regions creates what scientists call a 'hydromagnetic dynamo.' It's something like an electric motor, and it generates a magnetic field akin to a giant bar magnet."

Sometimes, the poles completely flip -- and presumably when that happens, many bigger changes are afoot than modest tweaks to airport signs. The last time the planet experienced a polarity flip was 780,000 years ago.


TOPICS: News/Current Events; Technical; US: Florida
KEYWORDS: 2012; catastrophism; earth; magneticpoleshift; poleshift
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Our GPS satellites must be having a nervous breakdown!
1 posted on 01/08/2011 6:10:00 AM PST by equaviator
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To: equaviator

Bush’s Fault


2 posted on 01/08/2011 6:11:53 AM PST by JRios1968 (This is me, in a nutshell: "Let me out of here...I'm trapped in a nutshell!!!!")
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To: equaviator

Perhaps this is why so many dangerous democrats and rinos are bipolar?


3 posted on 01/08/2011 6:17:33 AM PST by kindred (Come Lord Jesus, rule and reign over all thine enemies.)
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To: equaviator

Magnetic pole dancing ... the latest crisis du jour.


4 posted on 01/08/2011 6:18:08 AM PST by Mr Ramsbotham (Laws against sodomy are honored in the breech.)
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To: equaviator

So, let me get this straight. ONE airport in Florida is affected by this? And the rest of the world has adjusted? Or is perhaps not affected? Doesn’t make sense scientifically to me.


5 posted on 01/08/2011 6:19:22 AM PST by bboop (Stealth Tutor)
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To: equaviator
"The Earth's poles are changing constantly, and when they change more than three degrees, that can affect runway numbering,"

And possibly masses of migrating birds, causing large "die-offs"? One wonders.

6 posted on 01/08/2011 6:20:26 AM PST by Bloody Sam Roberts (Inspiration. The momentary cessation of stupidity.)
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To: equaviator
Why don't thay just change the approach plates?

Put a big "You are here." where the airport used to be...and a "You need to be here." over the correct spot on the chart...

7 posted on 01/08/2011 6:22:56 AM PST by moovova (Don't let Obama spoil the word "hope" for you...)
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To: equaviator

Could it be that too many airplanes are landing at Tampa Intl, and the airport is “tipping” over?


8 posted on 01/08/2011 6:23:52 AM PST by moovova (Don't let Obama spoil the word "hope" for you...)
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To: Bloody Sam Roberts

Yeah.. fall out from 0bambi’s START treaty....the Russians stole the North Pole.


9 posted on 01/08/2011 6:24:35 AM PST by spokeshave (Islamics and Democrats unite to cut off Adam Smith's invisible hand)
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To: equaviator

Of all the runways, at all of the airports, all over the world...
the magnetic shift has resulted in re-designation of just this one?


10 posted on 01/08/2011 6:24:41 AM PST by Repeal The 17th
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To: Bloody Sam Roberts

11 posted on 01/08/2011 6:27:40 AM PST by equaviator ("There's a (datum) plane on the horizon coming in...see it?")
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To: Bloody Sam Roberts
And possibly masses of migrating birds, causing large "die-offs"? One wonders.

The number of bird deaths compared to the number of birds migrating is less than minuscule. Also, some people, because of their provincialism, have to be reminded that exactly the same thing (but to a much more severe degree) happened in the most recent winter in the southern hemisphere because of the sudden and unusual cold.
12 posted on 01/08/2011 6:29:24 AM PST by aruanan
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To: equaviator
"An inner core of solid iron is surrounded by an outer core of molten iron. They rotate at different rates, and the interaction between the regions creates what scientists call a 'hydromagnetic dynamo.' It's something like an electric motor, and it generates a magnetic field akin to a giant bar magnet."

And, since it has first been measured, the magnetic field has been continuously decaying. Either the dynamo is slowing down or the field doesn't come from a dynamo.
13 posted on 01/08/2011 6:33:09 AM PST by aruanan
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To: equaviator

Tampa airport’s predecessor, Drew Field opened in 1928 with a Magnetic Declination of 2 degrees East degrees. The current magnetic Declination is over 5 degrees West. Therefore the magnetic compass orientation of the runways has moved 7 degrees.

Runways are named by the magnetic direction of their alignment, to the nearest 10 degrees. After 7 degrees of change it was time to change the names of the runways to coincide with the nearest 10 degree direction. Since the name/number of each runway is painted on the approach end in REALLY BIG NUMBERS, it was necessary to close the runway while this was done.

Hey news people, THE SKY IS NOT FALLING!


14 posted on 01/08/2011 6:33:57 AM PST by BwanaNdege ("a comeuppance is due the arrogant elites" - Charles Krauthammer)
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To: equaviator

Could it be that too many airplanes are landing at Tampa Intl, and the airport is “tipping” over?


15 posted on 01/08/2011 6:34:08 AM PST by moovova (Don't let Obama spoil the word "hope" for you...)
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To: equaviator
Sometimes, the poles completely flip -- and presumably when that happens, many bigger changes are afoot than modest tweaks to airport signs. The last time the planet experienced a polarity flip was 780,000 years ago.

How would anyone be able to state, as a fact, that the planet experienced a polarity flip 780,000 years ago?

Is this the same crew that is telling us about global warming, when I look out my window, and see 6-7 inches of snow, single digit temps, and it's been exceptionally cold since early November.

16 posted on 01/08/2011 6:36:58 AM PST by USS Alaska (Nuke the terrorist savages, in honor of Standing Wolf.)
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To: equaviator

doubt it.


17 posted on 01/08/2011 6:40:21 AM PST by ken21
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To: USS Alaska

Certain sedimentary rocks with iron particles in them “record” the direction of the earth’s magnetic field at the time they are deposited. Peel back the rock, layer by layer, and you can generate a chart of the direction of the field as a function of time.


18 posted on 01/08/2011 6:46:00 AM PST by Locomotive Breath
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To: equaviator
Earth's magnetic field, which still flummoxes those who study it... is thought to be generated deep inside the planet... An inner core of solid iron is surrounded by an outer core of molten iron. They rotate at different rates, and the interaction... creates what scientists call a 'hydromagnetic dynamo.' It's something like an electric motor, and it generates a magnetic field akin to a giant bar magnet.

But of course, liberals know better how to run things than Whomever designed this outdated concept.

And socialists are sure that this is part of global warming and is causing discrimination against minorities, who should be sent reparations by white Christians.

Although the phenomenon "still flummoxes those who study it," the Global Civil LIberties Union will look into it and will soon declare "a consensus" of "settled science."

19 posted on 01/08/2011 6:46:09 AM PST by Albion Wilde (Government does nothing as economically as the private sector. - Ronald Reagan)
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To: bboop

And they need to close it for an entire week???


20 posted on 01/08/2011 6:47:33 AM PST by Mr. K
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To: moovova; Repeal The 17th

The airport has not moved. Only the direction in which the compass points has shifted since the runways were first laid out in 1928.

Compass heading at most airports is constantly changing by varying amounts. Whether or not runways need to be re-designated/renamed depends on how fast magnetic declination changes at that location and how long it has been since the runway was laid out.

Also, if the runway was originally laid out exactly at 180 degrees they would name it “Runway 18”, the nearest 10 degree increment. Since the magnetic declination at tampa has shifted over 7 degrees since Drew Field was first opened, the current heading would be 187, or “Runway 19”. This would hold true for original directions of 179 to 184 and everything in between.


21 posted on 01/08/2011 6:55:12 AM PST by BwanaNdege ("a comeuppance is due the arrogant elites" - Charles Krauthammer)
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To: USS Alaska
How would anyone be able to state, as a fact, that the planet experienced a polarity flip 780,000 years ago?

Test it yourself. Take molten rock. Cool it. Now see which direction that newly solidified rock's magnetic orientation is.

If you live next to, say, a volcano, or a mid ocean ridge, you can harvest core samples and see which way the magnetic fields are aligned.

Geology isn't rocket science, but it rocks!

22 posted on 01/08/2011 7:00:36 AM PST by InternetTuffGuy
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To: equaviator

The North Pole is moving? Does Santa need help? How much does it cost to move an entire pole anyway? Do the environmentalists approve? Was it our hairspray?-lol
Might be affecting the birds and other animals tho!


23 posted on 01/08/2011 7:00:43 AM PST by ClearBlueSky (Whenever someone says it's not about Islam-it's about Islam. Jesus loves you, Allah wants you dead!)
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To: equaviator

Reporters are the dumbest people. The runway was not closed because of magnetic deviation.


24 posted on 01/08/2011 7:01:27 AM PST by CodeToad (Islam needs to be banned in the US and treated as a criminal enterprise.)
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To: moovova; Repeal The 17th

The airport has not moved. Only the direction in which the compass points has shifted since the runways were first laid out in 1928.

Compass heading at most airports is constantly changing by varying amounts. Whether or not runways need to be re-designated/renamed depends on how fast magnetic declination changes at that location and how long it has been since the runway was laid out.

Also, if the runway was originally laid out at anything from 175 to 184 degrees they would have named it “Runway 18”, the nearest 10 degree increment. Since the magnetic declination at Tampa has shifted over 7 degrees since Drew Field was first opened, the current heading would be between 182 and 191. A current heading of 185 and above would be called “Runway 19”.


25 posted on 01/08/2011 7:02:04 AM PST by BwanaNdege ("a comeuppance is due the arrogant elites" - Charles Krauthammer)
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To: BwanaNdege

I’d imagine Florida would have the largest magnetic declination?


26 posted on 01/08/2011 7:04:26 AM PST by BenKenobi (Rush speaks! I hear, I obey)
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To: moovova

Good point. That airport is on the water and planes are pretty heavy! ;-)


27 posted on 01/08/2011 7:08:11 AM PST by GatorGirl (Eschew Socialism!)
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To: equaviator

I would so like to buy this theory - because it means man didn’t influence it & can do nothing about it!


28 posted on 01/08/2011 7:08:37 AM PST by anniegetyourgun
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To: USS Alaska
How would anyone be able to state, as a fact, that the planet experienced a polarity flip 780,000 years ago?

The classic way is the examination of the sea floor basalts as they are created at mid-ocean ridges, where the sea-floor spreads and new rock is formed at the ridge. When it cools, it locks into place the magnetic orientation. The rock age is determined by principles similar to those used in carbon-dating, atomic clocks, and medical devices.

Sedimentary particles can be used in areas away from magnetic ridges, allowing for determination of tectonic plate movements.

Is this the same crew that is telling us about global warming, when I look out my window, and see 6-7 inches of snow, single digit temps, and it's been exceptionally cold since early November.

I guess that's sorta the next step from seeing Russia from there, huh? You claim you can see the entire globe?

I hear there was a warming trend in Australia over that same time period.

Or maybe you missed the word "global." You wouldn't be alone--many FReepers do.

29 posted on 01/08/2011 7:09:43 AM PST by Gondring (Paul Revere would have been flamed as a naysayer troll and told to go back to Boston.)
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To: BenKenobi
Actually one of the areas with the least declination:


30 posted on 01/08/2011 7:11:31 AM PST by epithermal
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To: Gondring
How am I going to set my compass during a reversal?:


31 posted on 01/08/2011 7:20:11 AM PST by epithermal
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To: BenKenobi
Actually, as you go farther north and east, you'll have the greatest separation between true north and magnetic north. In the midwest US, both are in about the same direction, it's just that the magnetic pole is closer. Then, in the western US, the farther to the northwest you go, the greater the separation between the two.

In this figure, the red arrow is toward the magnetic pole and the black one is toward true north. Note how the difference between arrows is greater the farther north you go, as well as the farther east or west you are from the magnetic north pole:

That gives us a map like this:


Of course, in Canada, it gets really funky, since you can be in an area where the you can be north of the magnetic pole, but south of the true pole...such as if you were up above the star (magnetic pole) on this figure:

32 posted on 01/08/2011 7:21:21 AM PST by Gondring (Paul Revere would have been flamed as a naysayer troll and told to go back to Boston.)
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To: epithermal
How am I going to set my compass during a reversal?:

Decline before you flip out!

33 posted on 01/08/2011 7:22:46 AM PST by Gondring (Paul Revere would have been flamed as a naysayer troll and told to go back to Boston.)
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To: equaviator
27R-9L no more.

5.56mm

34 posted on 01/08/2011 7:25:33 AM PST by M Kehoe
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To: bboop; Repeal The 17th; BwanaNdege
So, let me get this straight. ONE airport in Florida is affected by this? And the rest of the world has adjusted? Or is perhaps not affected? Doesn’t make sense scientifically to me.

This happens all over, but it ran as a news story and has now been posted on FR a few times in the past few days. (The runway numbers are "rounded off" so it's rare for the actual runway change, though.)

35 posted on 01/08/2011 7:26:47 AM PST by Gondring (Paul Revere would have been flamed as a naysayer troll and told to go back to Boston.)
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To: BenKenobi
"I’d imagine Florida would have the largest magnetic declination?"

Actually, much of Florida is close to zero. The largest declinations are in the northern states, especially the far NW & NE.

Here is a neat website to find your magnetic declination.

"http://www.magnetic-declination.com/"

36 posted on 01/08/2011 7:26:57 AM PST by BwanaNdege ("a comeuppance is due the arrogant elites" - Charles Krauthammer)
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To: BwanaNdege
Nice site--thanks!

Cute little graphic of historical pole wanderings:


37 posted on 01/08/2011 7:32:59 AM PST by Gondring (Paul Revere would have been flamed as a naysayer troll and told to go back to Boston.)
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To: Repeal The 17th
Of all the runways, at all of the airports, all over the world... the magnetic shift has resulted in re-designation of just this one?

THis is because every other runway on the planet was installed on vertical pivots to keep up with magnetic drift. Why do you think airports are so large geographically? So the runways can swing about freely.

38 posted on 01/08/2011 7:37:47 AM PST by Professional Engineer (Conservative States of America has a nice ring to it.)
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To: equaviator

"That's the second biggest magnet I've ever seen"

39 posted on 01/08/2011 7:38:23 AM PST by P.O.E. (A squid eating dough in a polyethylene bag is fast and bulbous. Got me?)
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To: BwanaNdege

So, would the alleged declination affect GPS satellite accuracy or not?

I understand runway designations per their respective alignments. Here in SE MI, the main runway at Selfridge Air Natinal Guard Base is designated as being “19” and is physically marked as such.

All I have to do is run the X-Plane flight simulator, go to that location and sure enough, the cockpit compass’s heading reading matches to the nearest degree (at the most) as the aircraft is positioned for takeoff.


40 posted on 01/08/2011 7:44:42 AM PST by equaviator ("There's a (datum) plane on the horizon coming in...see it?")
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To: epithermal

Of course, this all presupposes that the pole is shifting, rather than the pole staying in place, and the earth shifting. A shift, or tumbling of the earth would explain colder winters and hotter summers, for example.


41 posted on 01/08/2011 7:45:12 AM PST by PAR35
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To: Gondring

Have you seen the animations of the field on this site? They are huge files, but interesting:

http://geomag.org/info/declination.html


42 posted on 01/08/2011 7:47:23 AM PST by epithermal
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To: equaviator

I blame it on Santa Claus. He has wanderlust.


43 posted on 01/08/2011 7:53:42 AM PST by savedbygrace (But God.)
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To: Professional Engineer

“...vertical pivots...”
-
Ahhh-yesssss; makes perfect sense, now.


44 posted on 01/08/2011 7:57:24 AM PST by Repeal The 17th
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To: epithermal

I’ll check them out—thanks!


45 posted on 01/08/2011 8:00:06 AM PST by Gondring (Paul Revere would have been flamed as a naysayer troll and told to go back to Boston.)
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To: BwanaNdege

Sorry, my fault...I should’ve included (/sarcasm) with my comment.

As an ex-Navy controller, I was checked off on that stuff a long time ago. But, thanks for the refresher course...


46 posted on 01/08/2011 8:01:20 AM PST by moovova (Don't let Obama spoil the word "hope" for you...)
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To: PAR35

Yes, the earth does precess about its axis:

http://www-istp.gsfc.nasa.gov/stargaze/Sprecess.htm

And as you can read on that site some see a link between the precession and ice ages. But, the earths north magnetic pole has moved nearly 1,100 km in the last century:

http://www.physorg.com/news8917.html

I am no expert on climate, but I would suspect if the true axis of rotation of the earth had moved that far there would be huge climatic changes.


47 posted on 01/08/2011 8:09:22 AM PST by epithermal
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To: BwanaNdege

Are runways labeled by magnetic or true headings?

True headings makes more sense to me, but I don’t know.

In Boy Scouts, we always figured in the local declination to find true.

I would think that airplane navigators would have access to the latest declination and be able to adjust find true headings, then line up with runways (labeled in true headings).

Or in times of stress, you just fly by the compass?

We had better repaint the numbers, or many years in the future, when the aliens come to land on our desolate, empty planet, they will have trouble lining up on the runways.


48 posted on 01/08/2011 8:13:57 AM PST by Scrambler Bob (If you could read my mind ... just count up the felonies!)
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To: equaviator
This is only the beginning of what is clearly an expanding rupture in the space-time continuum.

One of these days, we are all going to wake up with everything upside down living on the wrong side of the Earth.

Don't say you were not warned.

49 posted on 01/08/2011 8:20:36 AM PST by NoControllingLegalAuthority (What this country needs is an enema.)
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To: Gondring

Interesting. Thanks.

I wasn’t sure what the incredibly unhelpful article meant by ‘heading towards Russia’.

I thought they meant it was heading west, not north. If West, then Florida would shift. Since it’s moving north, the declination won’t shift much.

That would explain why it’s only this airport, as they’ve probably not moved it since it was built.


50 posted on 01/08/2011 8:40:55 AM PST by BenKenobi (Rush speaks! I hear, I obey)
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