I have always held to the theory that(was pretty sure i invented it in 81 ha ha) that the iron core
is inductively heated by the plasma bath the sun emits.....not internally driven as popular belief. But either way you are measuring flux lines with a compass
. Many things can interfere locally since its such a small force(as another magnet or big ferrous metal in close proximity ). But untill the flux lines change via pole movement or distortion it should read true. I suppose a burst of solar
energy could distort the field and skew the lines of force the compass measures throwing it off a bit. But the field is complex and between the north and south poles is just a fraction of the main inductive field. And then its kind of got a shroud
where the plasma parts
around us that interacts on the leading edge of the business end. i'll find a pic(ok i think its attatched) and the link. i just got a look at it once but thats what i remember. heres a good link USGS National Geomagnetism Program | Home
another Magnetic Declination, Models, Data and Services | ngdc.noaa.gov
heres the link with the neeto data http://hfradio.org/prop/realtime_mag...simulation.jpg Magnetic Field Simulation showing Solar Wind affect on Magnetosphere
<---- It almost looks like an eye. I guess its like waves bashing your boat
... her lines stay true till they dont.
Sorry so blabby but i find it interesting...the mechanics of it all.
But i'd say to answer about the compass readings...they probably wouldnt change much unless the compression
zone on the windward side changed...that could cause a shift in the pole position. But its fairly constant. So it wouldnt affect it much. maybe about like mis-reading your declination chart? and adding a degree. Not sure how accurately the compass navigates and declination lines do change.
If a huge enough wind
hit to cause the flux lines to change gps
is going down for sure and it might even splash a satellite
I prefer using the stars but you need an accurate clock....and good sun time sense of direction.
When i get lost
i look for the big dipper.....in full pour position it spells IW..lol But i would like to see the Southern Cross and....... its a big moon tonight.