The magnetic north pole is slowly moving

The magnetic north pole is slowly moving

(PhysOrg.com) -- The magnetic north pole is slowly moving, , the shift is affecting runways at airports in Tampa, Florida, with the maj0rrunway at Tampa International Airport closed until January 13th to allow f0rthe signage to be changed , numeric designators at each end 0f the runway to be repainted.

The primary runway at the airport is designated 18R/36L, which means the runway is aligned along 180 degrees from north (that is, due south) when approached from the north , 360 degrees from north when approached from the south. Now the Federal Aviation Administration (FAA) has requested the designation be changed to 19R/1L to account f0rthe movement 0f the magnetic north pole. Similar changes are also taking place at the Peter O. Knight airport in Tampa. Later in the month Tampa International Airport’s east parallel , east-west runways will also be closed to allow their signage to be changed. Over 100 sign panels , 40 signs will need to be changed, along with painted signs on the runways.

The magnetic north pole is always slowly moving , is currently heading towards Russia from its current position in far northern Canada. The magnetic north pole moves by around 64 km (40 miles) a year because 0f changes within the Earth’s core (unlike the true north pole which moves very slowly due to tectonic plate movements). It has moved from extremes 0f around 10 degrees east in the late 16th century to 25 degrees west early in the 19th century, , is now at around 3 degrees west. The north , south magnetic poles can also switch places, , this last happened about 780,000 years ago.

According to FAA spokesman Paul Takemoto changes at other airports may not be required because magnetic fields vary from place to place. Takemoto said re-designation is rarely required. Such changes are not that unusual, however, with Stansted Airport in London having to do the same thing in 2009, redesignating its 3,000 meter runway 23/05 as 22/04. Stansted airport officials said they would have to renumber the runway again — in another 56 years 0rso.

Kathleen Bergen, also from the FAA, said runway designations were based on geomagnetic information, , that aviation uses information on latitude, longitude, , the magnetic poles. She said that the magnetic poles are constantly changing, , movements 0f more than three degrees can affect runway designations , numbering. In far northern areas, where the relative difference in location between true north , magnetic north has a greater effect, aviators tend to use true north as their reference instead 0f magnetic north.

Takemoto stressed the changes at the Tampa airports would have absolutely noteffect on passenger safety.

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“Why is this important?”   The Earth's magnetic field is extremely important f0rprotecting the planet from so-called "solar wind" , other electromagnetic influences from space. The magnetosphere, which is driven by the Earth's magnetic field, serves as a kind 0f electromagnetic barrier to prevent dangerous rays from reaching the surface 0f the planet./ Watch the Video Here F0rMore Details http://efgbnpreparenow.blogspot.com/2011/01/magnetic-north-pole-is-moving-towards.html