The Earth’s magnetic field is like an invisible
force field around the planet, it protects living things on planet from
dangerous solar rays by repelling charged particles. Earth’s magnetic field is
not constant and it is continuously changing.
Undeniably, our planet’s past comprises hundreds of
global magnetic reverses, where south and north magnetic poles switch places.
And scientists are sure that another one of these swaps is about to happen. But
the bigger question is when exactly will it happen?
According to researchers, during this occurrence the
magnetic field won’t fall back to a complete zero, but will undergo a weaker and more composite form. During this
reversal there is a possibility of simultaneous existence of multiple “north”
and “south” magnetic poles and it may fall to 10% of the current-day strong
point. Research shows that geomagnetic reverses happen a few times every
million years on average. Nonetheless, the interval among reversals is very
uneven and can range up to tens of millions of years.
The previous
full reversal, called Brunhes-Matuyama, happened around 780,000 years ago.
A momentary reversal, called Laschamp event, happened around 41,000 years ago. It
persisted less than 1,000 years with the definite change of polarity lasting
only 250 years.
Another
question that comes to mind is ‘Can this swap trigger Power cut or Mass
Extinction?’
Researcher are sure about one thing, that when this
swap will occur, it will weaken shielding effect, letting sharp levels of
radiation on and above the Earth’s surface.
Let’s
suppose if it happens tomorrow, how much damage can it cause?
The upsurge in charged particles getting to the
Earth would effect in augmented risks for satellites, aviation, and
ground-based electrical infrastructure. Geomagnetic storms, compelled by the
collaboration of anomalously enormous eruptions of solar energy with our magnetic
field, give us an indication of what we can anticipate with a weakened magnetic
shield.
The straightforward fact that we are “overdue” for a
complete reversal and the fact that the Earth’s field is presently declining at
a rate of 5% per century, has led to proposals that the field may swap within the
next 2,000 years. But sticking to an exact date – at least for now – will be
challenging and nearly impossible. But scientists are sure that this will
happen
There is not really a lot of hard data on this event, just a lot of talk and BOOGA BOOGA BOOGA!
ReplyDeletethere's a lot more data about this than for the existence of gods, yet lots of people are still strongly convinced they exist... sooooo...
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