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.
Has the “ climate change “ crowd come up with a way to control the magnetic field ?
Is young Greta Thunberg on the case ?
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?
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).
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.
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.
"The reversal of the poles can take up to 10,000 years to take full effect" ~ Cronos
About 10 centuries ago.
In the Year of Cultural Awareness, we need to know:
Are they referring to metric centuries?
Or imperial centuries?
Or bisexual centuries?
And so on.
“Sharp shifts”...
How sharp is sharp?
