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North Magnetic Pole Racing Toward Siberia

RogerRoast sends along a backgrounder from Scientific American on the best current theory as to why the north magnetic pole drifts. "The NMP, also known as the dip pole, is the point on Earth where the planet's magnetic field points straight down into the ground. Scottish explorer James Clark Ross first located the NMP in 1831 on the Boothia Peninsula in what is now northern Canada... [T]he NMP drifts from year to year as geophysical processes within Earth change. For more than 150 years after Ross's measurement its movement was gradual, generally less than 15 kilometers per year. But then, in the 1990s, it picked up speed, ... bolting north–northwest into the Arctic Ocean at more than 55 kilometers per year. If it keeps going it could pass the geographic north pole in a decade or so and carry on toward Siberia."

22 of 187 comments (clear)

  1. Eeep! by jd · · Score: 5, Funny

    Will Putin's ambitions stop at nothing?

    (Besides, a fast-moving magnetic pole screws up the UK's Ordinance Survey maps, which are magnetic north aligned.)

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    1. Re:Eeep! by jc79 · · Score: 5, Informative

      Parent is wrong. Ordnance Survey maps are NOT magnetic north aligned. They are aligned to OS Grid North, which is fixed wrt the UK (but not congruent with True North). Each printed map sheet has a diagram indicating the deviation from grid north of magnetic north at the centre of the sheet at a given epoch. When taking a bearing with a protractor compass, it is necessary to account for the magnetic deviation before following that bearing (in Scotland, magnetic north is currently 2 deg west of grid north).

    2. Re:Eeep! by icebike · · Score: 5, Insightful

      The funny thing is.... No one knows if this speed-up is a natural cycle, or if there's really something out of whack with the core.

      There being no artificial means of altering the magnetic field of the entire planet, you can rest assured that the speed up is a natural occurrence. /smirk

      As for it being part of a cycle, magnetic pole wandering, and indeed complete reversals, while documented in geology, follow no easily discernible pattern over time, with long periods of stability followed by many reversals over a short period.

      There are some claim the pattern is a Lévy distribution, but this has yet to be proven, and that fact by itself provides no predictive capabilities.

      There is a pretty good wiki article on this. The article includes a time-chart showing reversals of the magnetic field. There are very long periods of stability, as well as periods of frequent short reversals.

      Magnetic Pole reversals happen over a period of time of tens of thousands of years, and a reversal is proceeded by a diminishing of field strength, not necessarily by pole wandering. The current rate of field strength weakening suggests a reversal sometime in the years 3000-4000.

      So the speed up of the NMP's movement is not significant in estimating a reversal, and a reversal does not signify anything out of "whack" with the core of the earth.

      It is a perfectly natural thing that has occurred many many many times. And yes, mankind has lived thru reversals entirely unaware.

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    3. Re:Eeep! by SharpFang · · Score: 2

      "And yes, mankind has lived thru reversals entirely unaware." Only if you really stretch the definition of mankind.

      The last reversal occured 780,000 years ago.
      Homo heidelbergensis, the direct ancestor of both Homo neanderthalensis and Homo sapiens lived about 600,000 years ago.
      If you're willing to call the pre-Neanderthal population of genus Homo the "mankind", then yes, it lived through the reversals.

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  2. Our molten core is shifting by BadAnalogyGuy · · Score: 4, Funny

    The probable cause of this is a sudden shift in the tilt of our molten core. This would realign our magnetic poles.

    But it may also be indicative of a bigger problem. There was a film a few years back which explored the possibility of a sudden loss of angular momentum within the Earth's core. Without the spinning core, the magnetic field would be lost and our planet would lose the protection afforded to us by the magnetosphere. Essentially, we would become windswept by the solar wind and would end up without an atmosphere, much like Mars.

    The solution, the scientists in the film agreed, was to prepare several nuclear bombs which could be transported to the edge of the core (below the mantle) and detonated, thus restarting the spinning core. It seemed like a crazy theory, but with this sudden acceleration of the NMP, I think it might be wise to keep an eye on all of our options.

    1. Re:Our molten core is shifting by bluefoxlucid · · Score: 2, Informative

      The biggest problem is if the molten core shifts around, then the localized heat sources change, which changes the temperature of the ground surface, the oceans, and the atmosphere given enough time. This would eventually lead to civilization-annoying weather pattern changes, causing regular cycling climates (hot summer, cold snowy winter) to become either more extreme (hotter summer, colder winter) or tilted (hotter summer, winters that are cold and rainy). This of course distorts any functioning agrarian society while the whole disaster continues; things have to be moved around after the weather settles down again.

      And for the record, the earth's magnetic core is a molten iron blob subject to magnetic fields. The sun is a huge nuclear generator radiating a huge magnetic field. What happens when you rotate one around the other? Hint: nuclear bombs won't produce the kind of momentum that keeps that much metal spinning for millions of years... that would blow the whole planet to dust.

    2. Re:Our molten core is shifting by Inf0phreak · · Score: 2

      Who cares about Molten Core?! You're three expansions late, dude.

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    3. Re:Our molten core is shifting by DriedClexler · · Score: 3, Insightful

      Climate shifts are due to the shifting magnetic properties of the earth's core?

      ~*SWEEEET!*~

      Thanks for giving me my latest skeptical counter-theory to anthropogenic global warming!

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    4. Re:Our molten core is shifting by Bill,+Shooter+of+Bul · · Score: 4, Insightful

      I think you need to go back and study a little more science.

      First rule of science: go where the data leads you. When we learn more about the way our universe works, we update our thoughts about the way the universe works.

      Second Rule of science: Investigate the sources of reports. If the main source is not a scientist in the field of study, and/or it was paid for by a notoriously insane group that is not respected by the scientific community at large, do not trust. PETA is one such group. They just want people to not kill animals. They don't really care why you don't kill animals, they just want you to not kill animals. So, they try to provide as many reasons why you shouldn't as possible. If you presented them with a "study" that showed them that raising animals to be killed caused the earthquake in Haiti, they would probably post it on their website.

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  3. World stability by snsh · · Score: 5, Funny

    This is good news. Everyone knows that you regain stability by moving all your poles into the right hand plane.

    1. Re:World stability by mangu · · Score: 3, Informative

      Everyone knows that you regain stability by moving all your poles into the right hand plane.

      Only if the positive portion of the plane is on the left side. In Australia, perhaps?

    2. Re:World stability by MattskEE · · Score: 2

      Actually, putting your poles on the right half of the s-plane gives you instability :)

      (Reference)

    3. Re:World stability by glimmy · · Score: 2

      Maybe we should just put them on the jw axis, let it oscillate, and call it good.

  4. Grid North to Magnetic North by oodaloop · · Score: 2

    On military tactical maps, there's a diagram for converting from grid North (straight up using MGRS maps) to magnetic north (where the needle points on a compass). It'll say add or subtract some number of degrees to convert from one to the other, and each map is different depending on where in the world it is depicting. Since many of these maps are several years old, I wonder what impact this will have on ground navigation?

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  5. Alternative solution by MobyDisk · · Score: 4, Funny

    How about we just stick a GIANT MAGNET right smack on the real North Pole? That way, we don't need to worry about the "natural" pole shifting. Set this artificial magnet to have a different frequency than the earth's natural magnetism, so we can set our compass magnets to that same frequency and not worry about interference. (This will also keep this valuable asset from wandering into Russian territory.)

  6. It's actually the south magnetical pole. by carlhaagen · · Score: 2, Informative

    The magnetical north pole is on the opposite side of the planet, close to our geographical south pole; a compass' N needle points towards the magnetical south pole, but as we use compasses to orient towards our geographical south pole, we simply mark the needle N.

    1. Re:It's actually the south magnetical pole. by clone52431 · · Score: 3, Insightful

      You’re confusing the issue unnecessarily, and you’re incorrect. The “North Magnetic Pole” is the one geographically near to the North Pole, although it is magnetically a south pole.

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  7. In modern Russia... by BenSchuarmer · · Score: 2

    north pole goes to you.

  8. Well... by Zinner · · Score: 3, Informative

    Actually, the correct names are "North Seeking Pole" and "South Seeking Pole" shortened to North pole and South pole. The North (seeking) pole of the compass needle actually does point north. In the arctic, a standard hypothetical test monopole is repelled, making it north.

  9. We need a new treaty by gmuslera · · Score: 3, Interesting

    ..unless you are one of those deniers that think that the Global Pole Shifting wasnt caused by human activity.

  10. Magratheans running Beta software? by mschaffer · · Score: 2

    Slartibartfast needs to fix this. This is what happens when you use untested software.

  11. YOU Know the Cause by ChiRaven · · Score: 4, Funny

    You just don't want to admit it. It's another inevitable byproduct of anthropogenic global warming caused by greenhouses gasses. That should be obvious to anyone. Expect the IPCC papers on the subject to be exposed by a whistle-blower any day now. Insiders are predicting that the studies will show that the pole is repelled by the stronger SOURCES of the gasses, but there is a lag effect, so it is only now moving away from US, and toward Siberia. In an exchange of email messages also to be released at the same time by this anonymous whistle-blower, two of the secondary authors are reported to have said "aren't these econometric models WONDERFULLY flexible?"