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Magnetic Poles at the Equator?

July 18th, 2010 by admin | 1 Comment | Filed in magnetic pole shift

New research suggests that our magnetic poles have sometimes been at the equator. Even more interesting for anyone who thinks a pole shift is possible in 2012 – this switch occurred multiple times in a 50 million year period. And there is lack of intermediary polar locations – they were either at the poles we have today, or at the equator. This suggests a sudden switch.

Any sudden movement of the magnetic poles could cause problems, but I’m not aware of any reason why the new pole location matters – the change and the speed of the change are the important factors. The change is important because anything that currently involves the North pole actually being at the North pole will fall over. That would primarily be locational tools that humans use (GPS, compasses). The speed is critical. Slow is preferable, because fast will most likely leave us without a shield against cosmic radiation.

Oceans Might Cause Magnetic Pole Shifts

July 8th, 2009 by Rob | 2 Comments | Filed in magnetic pole shift, ocean, salt

There has been considerable difficulty trying to determine if a magnetic pole shift will occur in 2012. The underlying problem is that orthodox science has not been able to work out how our planet’s magnetic field ticks, and all we have seen is guesswork.

According to Wikipedia:

There is no clear theory as to how the geomagnetic reversals might have occurred. Some scientists have produced models for the core of the Earth wherein the magnetic field is only quasi-stable and the poles can spontaneously migrate from one orientation to the other over the course of a few hundred to a few thousand years. Other scientists propose that the geodynamo first turns itself off, either spontaneously or through some external action like a comet impact, and then restarts itself with the magnetic “North” pole pointing either North or South.

Current theories are not capable of producing predictions of when the next reversal might occur. Consequently we have no available science that can support any pole shift predictions for 2012.

Until now…

Earth’s magnetic field, long thought to be generated by molten metals swirling around its core, may instead be linked to ocean currents, according to controversial new research published this week.

It suggests that the movements of such volumes of salt water around the world have been seriously underestimated by scientists as a source of magnetism.

If proven, the research would revolutionise geophysics, the study of the Earth’s physical properties and behaviour, in which the idea that magnetism originates in a molten core is a central tenet.

The Times article goes on to say:

The salt in seawater allows it to conduct electricity, meaning it generates electrical and magnetic fields as it moves.

Scientists have always linked variation with turbulence in the outer core, but Ryskin suggests it actually correlates with changes in ocean circulation. In the north Atlantic, for example, changes in the strength of currents were matched by sharp changes in magnetic fields.

One idea is that changes in ocean circulation may explain the curious reversals shown by Earth’s magnetic field, in which the north and south magnetic poles suddenly flip over. This last happened 780,000 years ago.

This could also be linked to tectonic plate movements that have shifted the world’s land masses around the globe, forcing ocean currents to adopt entirely new routes.

If Ryskin is right, then climate change, predicted to alter the strength and course of ocean currents, could also alter the planet’s magnetic field.

…some other physicists have been quick to recognise its implications. Raymond Shaw, professor of atmospheric physics at Michigan Technological University, said it could make “the ruling paradigm of geophysics irrelevant”.

Suddenly we find ourselves in a situation where the impact of global warming & climate change might now include a magnetic reversal.

Oh-oh – Magnetic Field Changing Fast

July 7th, 2008 by Rob | 1 Comment | Filed in magnetic pole shift

A magnetic pole reversal is overdue. Such an event would result in an massive influx of radiation. It would damage electrical equipment, and cosmic rays could cause mutations. Some people feel a crustal pole shift could also result.

There is evidence that the next reversal could be as soon as 2012:

Rapid changes in the churning movement of Earth’s liquid outer core are weakening the magnetic field in some regions of the planet’s surface, a new study says.

“What is so surprising is that rapid, almost sudden, changes take place in the Earth’s magnetic field,” said study co-author Nils Olsen, a geophysicist at the Danish National Space Center in Copenhagen.

…The changes “may suggest the possibility of an upcoming reversal of the geomagnetic field,” said study co-author Mioara Mandea, a scientist at the German Research Centre for Geosciences in Potsdam.

…The decline in the magnetic field also is opening Earth’s upper atmosphere to intense charged particle radiation, scientists say.

Satellite data show the geomagnetic field decreasing in the South Atlantic region, Mandea said, adding that an oval-shaped area east of Brazil is significantly weaker than similar latitudes in other parts of the world.

“It is in this region that the shielding effect of the magnetic field is severely reduced, thus allowing high energy particles of the hard radiation belt to penetrate deep into the upper atmosphere to altitudes below a hundred kilometers (62 miles),” Mandea said

Scientists believe a reversal would take place over several thousand years, but I suggest that it could happen overnight. Thinking in terms of thousands of years is directly due to the timescales used when dating previous reversals – they wouldn’t be able to tell if it took one day, because they cannot date events that accurately.