The Earth's magnetic poles are
displaced and forced to adjust shipping routes
The magnetic north pole is moving more rapidly: 40 km per year
from Canada. It is expected that in 50 years is located in Siberia.
By Alexis de Ponson
Each day, the north is 100 meters
away from the North Pole. This data, provided by the Geological
Survey of Canada, plot movement that is experiencing the magnetic
north on the North Pole. The first is determined by the electromagnetic
field of the Earth itself and the site to where compasses point,
while the second corresponds to a geographical point, the man
chosen to identify the location of the cardinal points.
The magnetic north pole is located in the northwestern part of
Canada, and from 1972 to 2001 had moved the same distance as in
the previous 140 years since its discovery in 1831. The Canadian
agency now indicates that the north magnetic pole moves 40 miles
per year and to continue this pace in 50 years will be in Siberia,
The phenomenon has forced aviation authorities to correct the
orientation of the airstrips in relation to the new magnetic north
pointing to the navigation instruments, as such information is
crucial to organize air traffic. For instance, Tampa International
Airport, Florida, United States, ended in February this process,
for which it had to close for a month its tracks for takeoff and
landing ships. "Everything has been changed, which was a
great job," he told Discovery News Brenda Geoghagan spokesman
According to the report, every five years the Federal Aviation
Administration assesses the orientation of its runways to make
adjustments as necessary. The airports in Fort Lauderdale and
Palm Beach, also located in Florida, have suffered the same process,
which has not been without Chile.
The Directorate General of Civil Aviation (DGAC) said that for
a while and every five years, are part of the American Aviation
Authority software that serves as reference to make the necessary
corrections to the Chilean courts. This information is supplemented
with field data collection, traffic analysis and laboratory screening.
In 2010, the Administrator made the last update, which will remain
in effect until 2015. The last track was corrected Diego Aracena
An internal process
The origin of this phenomenon lies in the depths of the earth.
Francisco Fuentes, geologist and professor at the Andrés
Bello University, said that the most accepted hypothesis to explain
the movement of magnetic north is the activity that occurs in
the Earth's core, composed of a mixture of various metals in liquid
state, including iron and nickel. "The currents that occur
naturally in the Earth's core produce changes in the Earth's electromagnetic
field," he says, adding that the magnitude of this effect
depends on the amount of incandescent material moves inside the
nucleus by these currents .
What would be causing this increased movement of material? It
is not known. Some experts believe this could be the first step
of the magnetic reversal process that takes 10 thousand years
and in which the Earth's magnetic poles are reversed. A phenomenon
that occurred 780,000 years ago and which scientists are unaware
of their consequences.
It's not all: along with serving as a letter of sea and air, the
electromagnetic field is essential to protect the Earth from solar
winds that whip, so that some experts believe the change in the
location of magnetic north could leave the Earth more exposed
to solar radiation.