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Is there a non deviated point? Is it greenwich England

2007-03-26 16:20:57 · 5 answers · asked by ethro500mg 2 in Science & Mathematics Earth Sciences & Geology

5 answers

Find a globe and draw a line that goes from the North Pole through the Magnetic North Pole. Except for local magnetic properties, this should show you where they will line up.

2007-03-26 16:36:48 · answer #1 · answered by smartprimate 3 · 0 0

The true (geographic) north pole is the northernmost point of the planet, where the axis of the Earth's rotation meets the surface.

The north magnetic pole is where the magnetic field of Earth points directly down. This field is caused by the flow of magma beneath the surface of the planet. Since the flow constantly changes, the magnetic pole also changes. The position can dramatically change in what is called geomagnetic reversal- where magnetic north becomes magnetic south (your compass would then point south).

It is possible for both the geographic and magnetic north poles to align, but not likely. The angular difference between these poles is called magnetic declination.

2007-03-26 23:52:04 · answer #2 · answered by Yer Mom 2 · 0 1

True North and Magnetic North will match up on the great circle passing through the two poles. Last (2005) estimate for this was 114° 24' W longitude or 65° 36'E longitude. It passes through Barrhead, Alberta, CN, Clayton ID, USA, Kasan, Ubekistan, and Beelozerskoya, Russia.

2007-03-27 01:27:25 · answer #3 · answered by Helmut 7 · 0 0

Because true north is defined by the polar positions and magnetic north by the earth's magnetic field ....the difference is called the magnetic declination.... and it varies from the east to the west and what latitude you are in .... In the US the area around Hudson Bay has the smallest declination which by the way changes ever so slightly every year ... the USGS Topo sheets have the declination and the date so you can get a current declination by simple multiplication.

2007-03-27 00:09:37 · answer #4 · answered by ccseg2006 6 · 0 0

Along a line that passes near Duluth, St. Louis and New Orleans according to magnetic declination maps. (It misses my house by about 45 miles.) There should be another such line 180˚ around the world, Professor Kitty should be about 9000 miles closer than I am to that one.

http://www.ngdc.noaa.gov/seg/geomag/img/us_dec_11x17.pdf


(Note to self: Maybe I should start a new nutjob psuedoscientific movement using this as proof that the Mississippi River is the focal point of the universe.... those types of ideas seem to be much more profitable than real science)

2007-03-26 23:43:52 · answer #5 · answered by Now and Then Comes a Thought 6 · 0 0

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