by Mitch Battros
June 24, 2013

from EarthChangesMedia Website

Spanish version
 

 


Earth’s magnetic field is generated by what is known as the “dynamo or dipole” theory which involves the convection of liquid iron in the outer core.

 

The latest data continues to show Earth’s magnetic field is weakening.

Ongoing studies supported by the NSF (National Science Foundation) indicate a connection between submarine troughs (rifts), Earth’s mantle, and Earth’s outer core.

 

New research illustrates the shifting of magnetic flux, via Earth’s magnetic field - has a direct and symbiotic relationship to Earth’s,

  • outer core

  • mantle

  • lithosphere

  • crust

 


 


Right now the magnetic field is weakening significantly.

 

This will continue until it reaches zero point, at which time there will be a full magnetic reversal.

 

Until this time, we will witness magnetic north bouncing in the northern hemisphere. Closer to the moments of a full reversal, we will see magnetic north drop down below the equator.

During this phase of a weakening field, charged particles can penetrate through all levels of inner and outer atmosphere further descending to Earth’s core.

 

Evidence for such events has been found in sediment cores taken from deep ocean floors revealing magnetic polarity shifts and its effect on Earth’s core.
 



 


One such area is the Mid-Atlantic Rift where the North American and European continental plates are spreading as the result of mantle plumes where viscous molten rock ebbs and flows as a product of an over-heated or cooling core.

 

As lava solidifies, it creates a record of the orientation of past magnetic fields much like that of tree rings.

41,000 years ago, the Earth’s magnetic field faded and practically disappeared, leaving our planet unprotected from the bombardment of cosmic rays. A team of submarine geologist discovered this event in sediment cores collected off the coasts of Portugal and Papua New Guinea.

 

In their samples, they found an excess of beryllium-10 (10Be), an isotope produced by cosmic rays and atoms of nitrogen and oxygen.

 

In sedimentary beds dating from the age of the Laschamp excursion, the researchers found up to twice as much 10Be as normal, evidence of the intense cosmic ray bombardment that the Earth underwent.
 



 


The magnetic north pole had moved at approximately 10 miles per year in the early 1800′s more than 600 miles (1,100 km).

 

It is now moving faster at more than 40 miles per year since around 2001. This current trend of a weakening magnetic field suggests that Earth might undergo an excursion similar to the one that took place 41,000 years ago.

 

Since high energy cosmic rays has an effect on Earth’s core and can cause cell damage, such an event would have a significant impact on biodiversity, and in particular on humans.

 

This is why researchers are seeking to find out a more accurate prediction of future magnetic field excursions and reversals.