Free Republic
Browse · Search
General/Chat
Topics · Post Article

Skip to comments.

Part of Earth's Magnetic Field is Getting Weaker in 'Vigorously' Developing Anomaly, Scientists Say
newsweek. ^ | 5/22/20 | Hannah Osborne

Posted on 05/22/2020 9:17:17 PM PDT by BenLurkin

Using satellite data, researchers believe an "anomaly" in the South Atlantic may have split in two, with the eastern section "developing vigorously."

Earth's magnetic field is generated by movements within the planet's molten iron core. ...When the magnetic field is stronger, it blocks more radiation. When it is weaker, more radiation reaches the planet's surface.

The magnetic field is constantly moving. It strengthens and weakens as part of normal fluctuations. According to the European Space Agency, the magnetic field has lost around 9 percent of its strength over the preceding two centuries. One section of the magnetic field has been found to have weakened considerably since 1970.

This patch, called the South Atlantic Anomaly, sits between Africa and South America. Over the last 50 years, it has grown and moved farther west at a rate of roughly 12 miles per hour. However, in the last five years, part of the anomaly appears to have split off into a cell which the ESA calls a "second center of minimum intensity" located southwest of Africa.

Matzka said the South Atlantic Anomaly is caused by parts of Earth's core that sit beneath South Africa, the South Atlantic and South America, where the geomagnetic field is going into the wrong direction.

"We call these areas 'reversed flux patches,'" he said. "The 'normal flux patches' produce the field that we measure at the surface, while the reversed flux patches decrease it, causing the low field intensity in the anomaly. So there must be further reversed flux patches at the core of the earth that cause the split into different cells at the surface."

"Even the International Space Station has to have extra radiation shielding to protect the astronauts on-board when it passes through this region," Case said. "As the anomaly expands, and the field weakens

(Excerpt) Read more at newsweek.com ...


TOPICS: Science
KEYWORDS: atlantic; geology; iss; magneticfield; oops; radiation; southatlantic; southatlanticanomaly
Navigation: use the links below to view more comments.
first 1-2021-4041-44 next last
Updating a story from a couple years ago.
1 posted on 05/22/2020 9:17:17 PM PDT by BenLurkin
[ Post Reply | Private Reply | View Replies]

To: BenLurkin

Gotta be a global warming angle in it somewhere.


2 posted on 05/22/2020 9:22:14 PM PDT by LouieFisk
[ Post Reply | Private Reply | To 1 | View Replies]

To: BenLurkin

We can blame this on Trump, right?


3 posted on 05/22/2020 9:23:03 PM PDT by Steely Tom ([Seth Rich] == [the Democrats' John Dean])
[ Post Reply | Private Reply | To 1 | View Replies]

To: BenLurkin

1. It’s Trump’s fault.
2. Undeniable proof of global warming.


4 posted on 05/22/2020 9:23:25 PM PDT by MeganC (There is nothing feminine about feminism.)
[ Post Reply | Private Reply | To 1 | View Replies]

To: BenLurkin
Dang migrants. First our troops tip Guam over, now all those refugees are shifting the magnetic field. *Ducks and runs like hell*
5 posted on 05/22/2020 9:24:24 PM PDT by Viking2002 (Why should I walk into the great unknown, when I can sit here, and throw my bones?)
[ Post Reply | Private Reply | To 1 | View Replies]

To: BenLurkin

The weaker the magnetic field, the more cases of skin cancer.


6 posted on 05/22/2020 9:26:25 PM PDT by Signalman
[ Post Reply | Private Reply | To 1 | View Replies]

To: BenLurkin
This patch, called the South Atlantic Anomaly, sits between Africa and South America. Over the last 50 years, it has grown and moved farther west at a rate of roughly 12 miles per hour.

That's only 5.475 million miles.

7 posted on 05/22/2020 9:28:06 PM PDT by ConservativeInPA ("War is peace. Freedom is slavery. Ignorance is strength." - George Orwell, 1984)
[ Post Reply | Private Reply | To 1 | View Replies]

To: Steely Tom
Nope.


8 posted on 05/22/2020 9:28:16 PM PDT by DoodleBob (Gravity's waiting period is about 9.8 m/s^2)
[ Post Reply | Private Reply | To 3 | View Replies]

To: ConservativeInPA

Gotta be a typo. Probably 12 miles per year.


9 posted on 05/22/2020 9:31:15 PM PDT by HighSierra5
[ Post Reply | Private Reply | To 7 | View Replies]

To: ConservativeInPA

Yeah, I noticed that data seemed way off too. Probably meant 12 miles per year.


10 posted on 05/22/2020 9:31:49 PM PDT by John Milner (Marching for Peace is like breathing for food.)
[ Post Reply | Private Reply | To 7 | View Replies]

To: BenLurkin

I’m 73. I don’t care.


11 posted on 05/22/2020 9:33:44 PM PDT by rexthecat
[ Post Reply | Private Reply | To 1 | View Replies]

To: BenLurkin

I must say, the world is losing some of its attraction......


12 posted on 05/22/2020 9:35:14 PM PDT by G Larry (The People must shutdown the tyrants.)
[ Post Reply | Private Reply | To 1 | View Replies]

To: DoodleBob

There it is.


13 posted on 05/22/2020 9:36:53 PM PDT by wastedyears (The left would kill every single one of us and our families if they knew they could get away with it)
[ Post Reply | Private Reply | To 8 | View Replies]

To: BenLurkin

i thought everything was looking a little less attractive

boo hissss- boooooo


14 posted on 05/22/2020 9:42:43 PM PDT by Bob434
[ Post Reply | Private Reply | To 1 | View Replies]

To: BenLurkin

I’m thinking … perpetual lockdown?


15 posted on 05/22/2020 9:42:51 PM PDT by Ouchthatonehurt
[ Post Reply | Private Reply | To 1 | View Replies]

To: BenLurkin
Over the last 50 years, it has grown and moved farther west at a rate of roughly 12 miles per hour.

So it is beyond the moon and headed to Mars?

16 posted on 05/22/2020 9:45:43 PM PDT by Harmless Teddy Bear (Leave it to me to be holdin' the matches when the fire truck shows up & there's nobody else to blame)
[ Post Reply | Private Reply | To 1 | View Replies]

To: BenLurkin

Some recent story (here?) said the Sun was really quiet. Is there a connection?
Or does Sol have the Covid?


17 posted on 05/22/2020 9:52:46 PM PDT by Honest Nigerian
[ Post Reply | Private Reply | To 1 | View Replies]

To: BenLurkin

After reading the article......scientists do NOT know much of anything.


18 posted on 05/22/2020 10:00:39 PM PDT by Salvavida
[ Post Reply | Private Reply | To 1 | View Replies]

To: BenLurkin

Horrors!

Let’s Make America Magnetic Again.


19 posted on 05/22/2020 10:33:15 PM PDT by oldbill
[ Post Reply | Private Reply | To 1 | View Replies]

To: ConservativeInPA

That’s only 5.475 million miles.

Yes, that’s what cracked me up too. I commented at the site about it. Science!


20 posted on 05/22/2020 10:33:40 PM PDT by SaxxonWoods (Just sit in your house until the food stops coming and then starve. You'll be safe.)
[ Post Reply | Private Reply | To 7 | View Replies]


Navigation: use the links below to view more comments.
first 1-2021-4041-44 next last

Disclaimer: Opinions posted on Free Republic are those of the individual posters and do not necessarily represent the opinion of Free Republic or its management. All materials posted herein are protected by copyright law and the exemption for fair use of copyrighted works.

Free Republic
Browse · Search
General/Chat
Topics · Post Article

FreeRepublic, LLC, PO BOX 9771, FRESNO, CA 93794
FreeRepublic.com is powered by software copyright 2000-2008 John Robinson