Magnetic field anomaly

for what I read, the Earth's magnetic field is experiencing some sort of rapidly evolving anomaly, according to operating satellites in the area. the magnetic field is what protects the Earth's surface from solar radiation

i read the article now and it causes no harm for people at surface level....

Just wait two weeks, you'll see.

it lost 9% of it's strength in the last 200 years, which is kind of a lot if you think about it, and it means that the Earth's poles are moving around in a process that only occurs like once in 200.000 years

no, tv is broadcast from satellites in geosynchronous orbit (you know this if your parabillic antenna is pointing to the same spot in the sky all the time instead of having to track satellites across the sky)
these sattelites are very far away from the magnetic field or radiation belts theyre like 35000km away wheres what im talking about are satellites between 300-1000km away from the surface.

geosynchronous barely get any magnetic protection from earth, at most one of them can get lucky and be behind earth when there's an intense burst or solar wind or something but otherwise they all get fucked. also the sattelite transmitting tv to argentina isnt over argentina its probably above brazil or colombia since it has to be over the equator (otherwise it wouldnt be at the same spot in the sky all the time)

Aren't there failsafe/backup systems to account for these disruptions? Multiple satellite systems or something on the ground?

depends on the specific satellite and its mission\payload. i know if the main computer on a commsat crashes (like from too high error rate from radiation) it just restarts without switching off the payload (the antennas+radio repeaters that transmit to the ground) so on the ground you dont know the satellite just went dead for half a second. all this does is momentarily stop the sattelite from using its reaction wheels and earth sensors to point its antennas accurately towards the earth but the deviation is like 1/1000 of a degree so it dosnt matter.
also space computers are radiation hardened and all their registers\transistors are designed with error correction in mind, every register on the epu has shit like backup registers and checksums so any single flipped bit in the computer is an easily recoverable error. this works great except shit like really intense solar storms or passing though intense radiation belts.

i am a very dumb person... what does "the poles are moving" mean and what are the consequenses?

just to clarify if for example you restart your pc all the peripheries like mouse and screen stop working, the main computer on the sattelite isnt really like this every component has its own 'pc' running it from the rocket engines to the sensors so they keep running even if the main computer is off unless it tells them to turn off.
there's also multiple main computers, one is running and another constantly checks that its running so if it dosnt respond the backup computer turns on.
space industry is extremely conservative and its an autistic backup\redundancy obsessed engineer's wet dream, there's almost 2 satellites crammed into every satellite as each has 2 of every set of sensors, 2 sets of rocket engines and so on.

i read about it and i still dont get it... does it mean the north pole will become the south pole and the south pole will become the north pole?

"nice work in the hands of good people"

Nobody Never

It probably means climate change, doesn't it? maybe the seasons will get inverted.

Thanks for the (based) responses user, easily the most informative of the year

it will , earth's magnetic poles periodically switch. also its just the magnetic pole moving relative to the spin pole (which is also precessing)
what do you mean ?
just a guy lucky enough to work in the field he loves very much.i could talk about it 24/7

Attached: 685px-Magnetic_North_Pole_Positions_2015.svg.png (685x1024, 292.73K)

oh i also thought the north pole island was moving to the place where antartica now is... im dumb
but will the seasons change like the argentinan user said? like winter in the southern hemisphere will be in june?

just imagine... having snowy christmases

how is the registers/transistor's resistance to solar radiation from storms measured? has it significantly improved in recent years?

no seasons are due to the earth's tilt not magnetism even planets with no magnetic field have seasons ('seasons' on uranus for example last earth-decades)
you get northern summer in june because earth is tilted in such a way that the north gets more direct sun (and north pole gets no night)

if you plot the sun's ground track (the point above which it is on earth) then northern summer is when the sun goes north and northern winter is when it goes south.

as for the magnetic poles being reversed last time it happened was like 800000 years ago iirc, statistically it happens around every ~450000 years so we're kinda overdue but its not consistens, earth's core is by all accounts a magnetic clusterfuck and its far from being settled science.
if it starts moving fast we'll ofc have to throw away all compasses, we might get blasted with radiation or have satellites damaged by shifting radiation belts and we might also get auroras all over the planet even near the equator.
en.wikipedia.org/wiki/Geomagnetic_reversal

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thank you

im no expert on the computers but they measure resistance in flipped bits (registers that dont correspond to their checksums). the goal is generally to keep the bit flip rate low enough so the chance of double flips is infinitesimal like wouldnt happen in the lifetime of the universe .since if you get 2 flipped bits in a single operation they can pass the checksum since the checksum will show all the bits are correct when they're not and this can send erroneous data that can at best crash the computer and at worst cause it to fire thrusts or turn off components.
the logic is simple the chance of flipped bit in a single cpu clock is 1/*fuckhuge number*. now the chance for 2 flipped bits is 1/(*fuckhuge number*^2) which is 1/*absolute fucking absurd number* which means the computer will statistically have 2 flipped bits only once every trillion years which is within acceptable bounds for a satellite designed to last 20 years.

Attached: onboard-cubesat-module-obc-endurosat-1.jpg (1680x1120, 192.17K)

for example the byte 0000 0001 has checksum 1,one bit gets flipped and its 0010 0001 with checksum 0, its obvious for the computer the bit flipped.
but if 2 bits flip 0000 0001 turns into 1010 0001 both of which have checksum 1 (checksum is the last digit when summing up all the digits in a byte in binary ofc) so computer thinks 1010 0001 is correct data which may be harmless but may also be the time to fire one of the rockets in a maneuver which would send the satellite spinning due to unbalanced rocket firing, spinning satellite = antennas aren't pointing at earth anymore so the satellite can go way off course and waste all fuel while the ground people take 30 mins to access the satellite's backup omnidirectional antennas (which require much more power from the ground).

this is just an explanation why you really dont want 2 flipped bits in a spacecraft.

what do u do for work?