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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."

3 of 187 comments (clear)

  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: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).

  3. 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.