The problem I have is getting around the strength of the geomagnetic field and understanding what relevance it has, if any, on these magnetohydodynamic waves?
This is an extremely-interesting point. I mentioned earlier the fascinating observations made by Christopher Knight, which I'll try and transcribe and summatise key points from (but not right now).
One of his fundamental beliefs (arrived at by some level of experiment and research) is that the geomagnetic fields generated by monoliths (either singular, or in arrays) have been deliberately and interventionally modified by ancient man.
Whilst this sounds initially to be fringe pseudoscience, he argues that the stones have been heated by fire to beyond the Curie Point of the random particulate/aggregate of the material from which they are composed, such that they now exhibit magnetic fields which are homogenous/holoferric, as a discrete entity. He further asserts that the inter-stone magnetic fields within a standing circle are also aligned,
measureably-so.
This is what's particularly interesting about his work. If we consider that (for the purposes of comparison) ley lines and such fringery as being analogous to homeopathy, in terms of their indefinable vagueness and weak-force woowoo quotient (I apologise to some of my professional geopathic friends, your time may yet come): by contrast, the ground stone magnetosphere of Mr Knight is implicitly so strong that it could (perhaps) be strong-enough to influence a compass needle, let alone a flux-gate magnetometer.
Yes, you're way ahead of me (no, you're not, but you might as well be)...
Why would ancient man have wanted to do this? In the assumed absence of actual needle compasses?
At this point, I'm not going to reveal what Chris Knight says he believes the "stone circle magnetospheres" were intended for. If you know his work, you'll know what he asserts. And if you don't, you can guess for now, and be right (and that's why it disturbs me).
And back, pole-to-pole...
The problem I have is getting around the strength of the geomagnetic field and understanding what relevance it has, if any, on these magnetohydodynamic waves?
https://en.wikipedia.org/wiki/Magnetohydrodynamics
"The fundamental concept behind magnetohydodynamics is that magnetic fields can
induce currents in a moving conductive fluid,
which in turn polarizes the fluid and reciprocally changes the magnetic field itself. The set of equations that describe magnetohydodynamics are a combination of the
Navier-Stokes equations of
fluid dynamics and
Maxwell's equations of
electromagnetism. These
differential equations must be solved
simultaneously, either analytically or
numerically."