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sharpiefan
03-06-2018, 09:16 AM
A Mysterious Anomaly Under Africa Is Radically Weakening Earth's Magnetic Field (ARTICLE LINK) (https://www.sciencealert.com/something-mysterious-under-southern-africa-dramatically-weakening-earth-s-magnetic-field-south-atlantic-anomaly)



Excerpt
Above our heads, something is not right. Earth's magnetic field is in a state of dramatic weakening and according to mind-boggling new research, this phenomenal disruption is part of a pattern lasting for over 1,000 years.

Earth's magnetic field doesn't just give us our north and south poles; it's also what protects us from solar winds and cosmic radiation but this invisible force field is rapidly weakening, to the point scientists think it could actually flip, with our magnetic poles reversing.

As crazy as that sounds, this actually does happen over vast stretches of time. The last time it occurred was about 780,000 years ago, although it got close again around 40,000 years back.

When it takes place, it's not quick, with the polarity reversal slowly occurring over thousands of years.

Nobody knows for sure if another such flip is imminent, and one of the reasons for that is a lack of hard data.

The region that concerns scientists the most at the moment is called the South Atlantic Anomaly a huge expanse of the field stretching from Chile to Zimbabwe. The field is so weak within the anomaly that it's hazardous for Earth's satellites to enter it, because the additional radiation it's letting through could disrupt their electronics.


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Canoeyawl
03-06-2018, 11:28 AM
It is a good thing we have GPS

sharpiefan
03-06-2018, 11:48 AM
It is a good thing we have GPS

:)
Temporarily .... if the field goes down, most non-military satellites will be toast.

Puttputt
03-06-2018, 11:54 AM
Sharpiefan, my knowledge of physics is incredibly poor. Could you tell me if the increased radiation brought about by a weakening magnetic force has the potential to affect human health?

Dave Gray
03-06-2018, 12:23 PM
Is another age of mutations upon us?

Peerie Maa
03-06-2018, 12:27 PM
Sharpiefan, my knowledge of physics is incredibly poor. Could you tell me if the increased radiation brought about by a weakening magnetic force has the potential to affect human health?

Skin cancers and cataracts are a possibility. And as Dave Gray said changes to the DNA, which could be good or bad.

sharpiefan
03-06-2018, 03:54 PM
Sharpiefan, my knowledge of physics is incredibly poor. Could you tell me if the increased radiation brought about by a weakening magnetic force has the potential to affect human health?

Possibly, if people ignore basic precautions. I would worry more about the doomsday loonies running amok. We know it's coming, so can prepare our power grids and gadgets. It will be interesting to see the effect on critters that use the magnetic field to navigate. You might find this an interesting read:

Flipping Magnetic Field (https://news.nationalgeographic.com/2018/01/earth-magnetic-field-flip-north-south-poles-science/)

LeeG
03-06-2018, 04:27 PM
Vibranium

ahp
03-06-2018, 05:18 PM
I went to the article. All I found was the authors name. Did this appear in a peer review journal?

sharpiefan
03-06-2018, 07:32 PM
I went to the article. All I found was the authors name. Did this appear in a peer review journal?

Might take a bit to load. Both my links work on my 6-year-old dumb phone.
Here's the Geophysical Research Letters edition (http://onlinelibrary.wiley.com/doi/10.1002/2017GL076007/full).

Tom Montgomery
03-06-2018, 07:34 PM
Interesting but irrelevant to me in my lifetime. Or my next several generations.

I don't lose sleep over the Yellowstone super volcano, either.