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Started By
Message
The big flip is happening
Posted on 7/11/20 at 10:00 pm
Posted on 7/11/20 at 10:00 pm
LINK
quote:
Abstract
The paucity of Southern Hemisphere archeomagnetic data limits the resolution of paleosecular variation models. At the same time, important changes in the modern and historical field, including the recent dipole decay, appear to originate in this region. Here a new directional record from southern Africa is presented from analysis of Iron Age (ca. 425–1550 CE) archeological materials, which extends the regional secular variation curve back to the first millennium. Previous studies have identified a period of rapid directional change between 1225 and ~1550 CE. The new data allow us to identify an earlier period of relatively rapid change between the sixth and seventh centuries CE. Implications for models of recurrent flux expulsion at the core-mantle boundary are discussed. In addition, we identify a possible relationship of changes recorded in these African data with archeomagnetic jerks.
Plain Language Summary
Earth's dipole magnetic field is presently undergoing a rapid decay, best expressed by a deepening area of low field called the South Atlantic Anomaly (SAA). This apparent collapse of the geomagnetic field, and speculation about a future field reversal, has captured the public imagination. But we know little about the history of the SAA, limiting our ability to place current changes within a long-term context. Here we present a new magnetic record from sites of southern Africa. The new record supports our prior inferences that the SAA is just the most recent manifestation of a recurring phenomenon in the core beneath Africa—called flux expulsion—that is having a profound impact on the expression of the geomagnetic field.
Posted on 7/11/20 at 10:03 pm to Jim Rockford
will this impact the start of college football?
Posted on 7/11/20 at 10:03 pm to Jim Rockford
Yeah, it’s Saturday night and your mom wants to go back to missionary.
Posted on 7/11/20 at 10:04 pm to Jim Rockford
quote:
in the core beneath Africa
Figures!
Posted on 7/11/20 at 10:04 pm to Jim Rockford
So what’s the timetable and the implications?
Posted on 7/11/20 at 10:05 pm to Jim Rockford
How much will crawfish prices go up?
Posted on 7/11/20 at 10:06 pm to Jim Rockford
quote:
Plain Language Summary
Yeah that shite didn’t help me at all. Wtf does this mean and why should we care
Posted on 7/11/20 at 10:08 pm to Jim Rockford
quote:
African data with archeomagnetic jerks
BLM is behind this?
Posted on 7/11/20 at 10:09 pm to OWLFAN86
quote:
will this impact the start of college football?
You people... Too much...
Thanks for the laugh.
Posted on 7/11/20 at 10:10 pm to Mr. Misanthrope
quote:
You people
What the hell you mean, "You people"?
Posted on 7/11/20 at 10:10 pm to Jim Rockford
Dammit,and I just retired and have to deal with this plus a pussy as president.
Thanks a lot.
Thanks a lot.
Posted on 7/11/20 at 10:10 pm to rmnldr
quote:
So what’s the timetable and the implications?
This. Should I run up my credit cards and take out a 120-month loan for a 911 Cabrio?
Posted on 7/11/20 at 10:11 pm to Jim Rockford
quote:
has captured the public imagination
I love when academics write something like this. The public can barely read on a 4th Grade level, if it wasn't in a blockbuster movie or rap song, it did not capture their imagination.
Posted on 7/11/20 at 10:13 pm to lsuguy84
quote:
How much will crawfish prices go up?
'bout tree fiddy
Posted on 7/11/20 at 10:14 pm to Jim Rockford
Doesn’t this shite take like 1,000 years to actually happen?
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