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Magnetic variation calculator
From: Paul Hirose
Date: 2005 Feb 20, 14:16 -0800
From: Paul Hirose
Date: 2005 Feb 20, 14:16 -0800
At the U.S. National Geodetic Survey site I noticed they have a magnetic declination calculator in their online "geodetic tool kit". It's pretty interesting -- computes an estimate of your local declination (variation), inclination, and intensity from the IGRF worldwide magnetic model. Rates of change are given too. The location input page didn't render with my old Netscape browser, but was ok with Internet Explorer and Firefox. http://www.ngdc.noaa.gov/seg/geomag/magfield.shtml