Posted on 03/16/2021 8:56:34 AM PDT by SunkenCiv
Rebecca Boyle is an award-winning freelance journalist covering astronomy, zoonoses and everything in between. She is a contributing writer for The Atlantic and her work regularly appears in Popular Science, New Scientist, Aeon, Wired, and other publications for adults and kids. Follow her on twitter: @rboyle31.
No! It is fossil fuel burning causing shift in magnetic fields. Global warming has the same cause. Coming ice age will also be caused by too many cars & airplanes. /S
Has the “ climate change “ crowd come up with a way to control the magnetic field ?
Is young Greta Thunberg on the case ?
I almost lost an eye from flying pieces of toast! ;^)
Fred, they found your old ovens from a former life.
Do not give them your old recipes.
You mean the poles changed things out of Krakow?
You weren’t wearing dark sunglasses?..............
This technique is usually used on igneous rocks like basaltic lava flows that ‘lock in’ local magnetic fields when the magnetite goes through the curie temperature. An oriented core sample is taken with a diamond bit, then cut into pieces that are mounted in a special freely spinning gimbal mounted in three axis magnetometer. The sample is spun and an average magnetization vector is determined and worked back to the original sample orientation in space. Here they are doing it with furnace slag.
Hmmm ... 1100 to 1300 ... roughly coinciding with the latter half of Little Optimum (considered circa 950 to 1250).
So since the Glowball Warming that caused the warming preceded the drop in field strength while a gradual return to cooler weather was after or contemporary with it this is probably correlation and not causation (I’m assuming a weakening magnetic field would allow more energy to strike the whole earth, not less, whereas a strong field strength would shift some energy to the poles but block more of the solar wind otherwise).
If the field gets too weak we could always attach magnets to Founding Fathers spinning in their graves.
The second time I just sat in the back. I didn’t own a raincoat at that time. Or now.
Yes, the earth’s magnetic field changes with time. Anyone who has kept track of magnetic declination changes over the last few decades knows this. These data from about 1000 years ago are fascinating, though.
Yup. That’s the technique that provided the evidence for plate tectonics, still better known (and more accurately known) as continental drift. But it’s been used on pottery and such as well, the results providing consternation at times.
Yup, the compass adjustment for true north has changed just since I was a Boy Scout. The Scouts really tightened up membership after I was done with ‘em.
https://freerepublic.com/tag/poleshift/index
Magnetic shift? That gif sent my gyros tumbling.
OR, that lazy jerk Fred dumped a pile of hematite next to the furnace and never shoveled it in, which happened to be full of loadstone unbeknownst to anyone at the time.
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