Softpedia
 

NEWS CATEGORIES:



NEWS ARCHIVE >>
SOFTPEDIA REVIEWS >>
MEET THE EDITORS >>
Home > News > Science > Nature

December 2nd, 2008, 08:34 GMT · By

Earth's Two North Poles Are Hundreds of Miles Apart

SHARE:

Adjust text size:


Ice levels at the North Poles, over the past 3 decades
Enlarge picture
Though the middle of the Arctic ice sheet is considered to be the "real" North Pole, there are, in fact, two North Poles on our planet, as there are two South Poles as well. While the geographic pole is simply a projection, determined by humans, the magnetic pole is another story completely. It's not an abstract representation, but the engine that allowed the use of compasses and other navigation equipments for centuries.

 

Even now, airplanes use all sorts of flight instruments that require the presence of the magnetic lines emitted by the magnetic North Pole (mNP), in order for them to work, although it always moves.
A sketch of the path the magnetic North Pole followed in recent history
Enlarge picture
During a single day, the mNP can circle around a designated point of origin by about 80 kilometers (50 miles), in a sort of elliptical movement. Each year, this pole travels about 40 kilometers (25 miles) in whichever way it's going.

 

Its location in 2005 was northwest of Sverdrup Island, in Canada, at about 82.7° North and 114.4° West. The magnetic North Pole was first determined to be different from the geographical one in 1831, when explorers found it a few hundred miles to the south of its current location.

Since then, modern techniques have allowed scientists to theorize on its possible routes,

A map showing a predition of the place that the magnetic North Pole will reach by 2050
Enlarge picture
but the exact mechanisms that drive its erratic movements are not yet fully understood. Outside of direct measurements, there is no other way of detecting its exact location.

 

The mNP moves in zig-zag across the Arctic, and predictions say it will go over the North Pole and then reach Northern Europe by as early as 2050. However, the geographic North Pole will remain as fixed as possible over the next billions of years, as it doesn't really exist in real life. It's a simple projection of the lines that account for longitude and latitude on every map. The points where they all meet are either the North or the South Pole.


TELL US WHAT YOU THINK:

1,833 hits · Link to this article · Print article · Send to friend · Subscribe to news

MUST-READ RELATED ARTICLES:


Earth's Poles Are Shifting to New Coordinates

Geomagnetic Poles Stay in Place on 12.21.2012

The North Star Is Not Always the Same One

Sunlight Influences Ocean Circulation

Polar Warming Linked to Human Activities

READER COMMENTS:



No user comments yet.
Be the first to express your opinion!
Copyright © 2001-2012 Softpedia. Contact/Tip us at

WindowsGamesDriversMacLinuxScriptsMobileHandheldNews

SUBMIT PROGRAM   |   ADVERTISE   |   GET HELP   |   SEND US FEEDBACK   |   RSS FEEDS   |   UPDATE YOUR SOFTWARE   |   ROMANIAN FORUM