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Earth's magnetic field data

  • 24-03-2011 11:29pm
    #1
    Trogdor
    Registered Users, Registered Users 2 Posts: 2,310 ✭✭✭


    I wasn't sure whether to post this here or in geography, but if it's in the wrong place feel free to move it mods.

    I caught the end of a documentary a few days ago which mentioned the decreasing magnetic field strength of earth's magnetic field over the last century and I was just wondering if there would be any free source of data for the earth's magnetic field strength? For more of a longer term span (maybe from year-to-year) rather than daily data.
    Thanks for any help in advance:)


Comments

  • #2
    Alun
    Registered Users, Registered Users 2 Posts: 21,499 ✭✭✭✭Alun


    http://www.ngdc.noaa.gov/geomag/

    I use it for getting magnetic declination data for mapping / navigation purposes, but I'm sure you can find something suitable somewhere on the site, it's pretty comprehensive.


  • #3
    Trogdor
    Registered Users, Registered Users 2 Posts: 2,310 ✭✭✭Trogdor


    Thanks, just what I was looking for!


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