Den Lianer Goist š©š°
stuxā”ļøMovement of magnetic north pole over the years
Hugo Mills
@stux Looks like it's sobered up after that bender in 1620...
Right Off The Noggin@stux wait, what!? It MOVES? Pray tell what are the implications of this amazing little chunk of information?
Peter Drake HAS MOVED@peterdrake @stux I found this. Best quote about what to expect: "forecasting the future is challenging and we cannot be sure,ā š
https://www.popularmechanics.com/science/environment/a32496561/why-magnetic-north-pole-moving/
But I would appreciate some reassurance if we can get some #Science experts friends to weigh in lol
#geology #earth #navigation
https://www.popularmechanics.com/science/environment/a32496561/why-magnetic-north-pole-moving/
But I would appreciate some reassurance if we can get some #Science experts friends to weigh in lol
#geology #earth #navigation
The Neglectful Gardener
the roamer@simonpease @rotn @[email protected] @stux
"It will flip." Your statement on the North pole would be the correct answer to so many questions ... ; remarkable.
I stumbled upon your post whilst catching up on people I had missed in the last few days. Thought it was about the public's attitude toward adopting more proactive covid mitigations. But no, the North pole. It's a bit like a Rohrschach test, we project ourselves into the answer. Remarkable.
Iāve had similar experiences, recently. It feels as if there are many things which could āflipā. Many things on a knife edge.
Magnetic North has flipped before in the planetās history, as we can tell from the geological record, and according to my reading in āNew Scientistā will do so again (but maybe not for millennia). I donāt think we will be waiting that long for some of the others, at least, I hope not.
There is some amazing content lurking under some of the random looking comments running by.
In the 60s I was a kid attending school on an airbase in Italy. The jukeboxes around base were always blaring Petula Clark's "Downtown". It wasn't until years later I learned it was NOT "Ciao, ciao." It's all perspective lol.
BashStKid@rotn @peterdrake @stux @simonpease
Itās complex & not perfectly understood, sure. The main dipole field varies, the smaller quadrupole fields vary, there are mobile features like the s Atlantic anomaly or the Indian depression where the fieldās a bit weak, and itās hard to model. But itās not high on my lists of things to worry about. If this means more auroras in Europe, thatās fine by me. Iāll start worrying when they move down to Africa.
@simonpease @rotn @peterdrake @stux
Not saying I wouldn't mind a bit more of this ...
https://mastodonapp.uk/@Bjammin/109614367048016844
but I guess I'll have to stick with https://aurorawatch.lancs.ac.uk/
unless the core-mantle boundary gets really frisky for 2023 ...
Benjamin Harris (@[email protected])
Attached: 1 image Icelandic Aurora #photography #landscapephotograpy #travelphotography #digitalphotography #photooftheday #aurora #Iceland #Nikon
4censord
David Scott Moyer
KenWalkerQB 
Rosco
Barry Goldman@rotn @stux it moves and every half a million years (on average) it completely flips N/S
the story is recorded on the ocean floor
https://en.wikipedia.org/wiki/Geomagnetic_reversal
the story is recorded on the ocean floor
https://en.wikipedia.org/wiki/Geomagnetic_reversal
George Dukes@stux @rotn it has always moved. If you do navigation with a map & compass, the magnetic variation( the correction you put in) changes every year. At some stage there will also be a sudden pole reversal, and North becomes South and vice vers. There is evidence that this has happened cat least 100 times in the last 20 million years. ( geological evidence of the reversals can be found in rocks.) (ā suddenā in this context means over about 1000 years)
Paul Clark@Georgedukesh @stux @rotn yeah, the real pain is that in the UK it will soon cross over to be variation East, which means many of the sayings we ancient mariners use will have to be reversed.
Mine is/was that when taking a bearing from the chart up the companionway to the helm, it goes up 4Ā° (W. UK, when I started 30 years ago!) and going from a sighting compass down ladder to the chart table, it goes down.
"Variation west, compass best; variation east, compass least" will still work though!
@Georgedukesh @stux @rotn (having said all that, while the variation is +/- 1Ā° I can pretty much ignore it, because most people (including me) on a small boat can neither sight nor steer to that accuracy anyway š¤£)
@Georgedukesh @stux
This is all fascinating. I am so #grateful that I live in a world full of experts that have mapped the world for me, before I started trying to find my own way around out there.
This is all fascinating. I am so #grateful that I live in a world full of experts that have mapped the world for me, before I started trying to find my own way around out there.
The Cactus@rotn @stux Anything based on magnetic north needs to be constantly updated. For instance aviation maps and runway numbers.
Even worse, the Earth magnetic fields are not straight, perfect and regular. They vary in seemingly random ways and are very easily perturbed. It's a MESS.
And little do you know there is a Third North! Map North. Because cartographers like to have straight lines (for example to have each square be the same area). Geography and physics are complicated.
Clemens
Debby Ryan@stux What happens when it gets to Russiaš»š¤£š¤Ŗ
Randy Noseworthy š¼ 
Icevice
Stephen J Henstridge
Corax@stux Special Magnetic Operation proceeding towards Russia
Denis š@stux Should we tell somebody about this? Seems like sort of a big deal.
Lampje@stux what I've read is that it's actually the magnetic south pole on the geographic north pole. It turned for many times now.
Thx, i'm gonna read more about it š
Thx, i'm gonna read more about it š
@Lampje They 'switch' about every 500 000 years if im right! š®
Liveoak@stux And quickly!
Vince Katter@stux kinda wondering what happened around 1850
SuddenGenesis
š¹ššššš¢ :~$@stux
Please turn right. You will arrive soon to your destination.
Please turn right. You will arrive soon to your destination.
Lou Katz@stux Hmmm. Why is the magnetic North Pole leaving Canada and heading towards Russia??
wb x64@stux why am I both pleased and concerned?
Raphael Mattos@stux is it accelerating? I know the earth's curvature would make it seem like that from this angle, but even considering that, it still looks like it's faster after the 20th century. Feels like a bad sci-fi movie premise.
Susan S@stux Below is a map with the local magnetic variations across the globe. For places in red (East variation) add the variation to a compass reading to get orientation relative to true (geographic) north. For places in blue (West variation) subtract the variation. For example, if you live in a place with a 20Ā° East variation and your compass reads 340Ā°, then you are oriented exactly to true North (360Ā°).
https://www.ngdc.noaa.gov/geomag/WMM/data/WMM2020/WMM2020_D_BoZ_MILL.pdf
acm@Sue_with3cats @stux That map just made my head explode!!!
@stux @acm_redfox Ha! If you like the world magnetic variation map, then you might also enjoy this online calculator from the National Centers for Environmental Information. The tool calculates the magnetic variation (and its expected rate of change) for an entered latitude-longitude (the tool has an option to enter a street address instead).
https://www.ngdc.noaa.gov/geomag/calculators/magcalc.shtml?useFullSite=true
Jeffrey Street@stux In 1978, I spent 10 days at the Canadian Forces Station at Alert, NWT, then and now regarded as the last stop before the North Pole. Should qualify that with "geographic North Pole." (I might have posted this picture here before.)
Warren Terra@stux
There's got to be a way to get people angry that the Magnetic North Pole has been moving steadily away from the US for more than 150 years.
There's got to be a way to get people angry that the Magnetic North Pole has been moving steadily away from the US for more than 150 years.
numbakrunch@stux Looks like it's accelerating. Could this be a prelude to the magnetic poles switching?
Samhain Night@stux That seems concerning...
Angelo'@stux I love how we humans are trying to put an order into this cosmic chaos. We've set the absolute geographical of North pole, but earth says, fudge you ill do whatever
Birdulon@4f_koultouras @stux geographical poles are set to the axis of rotation, which also happens to move around constantly. Defining it as some historic average is mostly fine though compared to magnetic poles since compass bearings are a little bit more relevant to people in general.
@4f_koultouras @stux yeah, I mean the deviation is less relevant
Ćscar Morales VivĆ³@stux it met some Canadian geese in 1850 and couldnāt wait to get away fast enough.
@stux
Stunning, didn't realuze it moved THAT fast
Stunning, didn't realuze it moved THAT fast
Steve Hayman ā
Phillip Moore@stux there is a theory of the moon inching away.... making the earth wobble.....hence making climate change worse....
swagg boi š©@stux Wake up sheeple!!
Adamas Nemesis@stux Didn't know it was moving quite that fast.
Julia T@stux Why? What does it mean??š¤·š»āāļø
Hotch Deercliff@stux and we may be near a complete magnetic polar flip flop - happens on average around every 300K years. Last one was 789K yrs ago. #whatsupwillbedown
Coming Up Violets!@stux So, this is terrifyingā¦yes? Am I right? Itās a bad thing, orā¦?
Carl Lester@stux Interesting. Itās been moving in a pretty straight line for awhile now, which I guess explains why declination here in NE USA has been about 13 degrees for a long time.
Catherine McGuire@stux Could it be that they just had shitty magnets back then? 
StephenC@stux itās slowly moving to Russia!!!