Summary

DescriptionMagnetic North Pole Positions.svg	English: Magnetic north pole positions of the Earth. Poles shown are dip poles, defined as positions where the direction of the magnetic field is vertical. Red circles mark magnetic north pole positions as determined by direct observation, blue circles mark positions modelled using the GUFM model (1590–1980) and the IGRF model (1980–2010) in 2 year increments.
Date	18 January 2012
Source	Own work Observed pole positions taken from M. Mandea and E. Dormy, "Asymmetric behavior of magnetic dip poles", Earth Planets Space, 55, 153–157, 2003. Observed position in 2007 taken from Newitt et al., "Location of the North Magnetic Pole in April 2007", Earth Planets Space, 61, 703–710, 2009 Modelled pole positions taken from the National Geophysical Data Center, "Wandering of the Geomagnetic Poles" Shoreline and borders from Natural Earth
Author	Tentotwo
SVG development InfoField	The source code of this SVG is invalid due to 2 errors.   This W3C-invalid map was created with Inkscape…important.   This map uses translateable embedded text. This SVG map has been made or improved in the German Kartenwerkstatt (Map Lab). You can propose maps to improve as well. azərbaycanca ∙ čeština ∙ Deutsch ∙ Deutsch (Sie-Form) ∙ English ∙ español ∙ français ∙ italiano ∙ latviešu ∙ magyar ∙ Nederlands ∙ Plattdüütsch ∙ polski ∙ português ∙ română ∙ sicilianu ∙ slovenščina ∙ suomi ∙ македонски ∙ русский ∙ ქართული ∙ հայերեն ∙ বাংলা ∙ ไทย ∙ +/−

GMT Source Code

GMT is a Generic Mapping Tool.

<source lang="bash">

1. !/bin/sh

GMT psxy -m -JE-105/90/15c -R-140/-70/65/90 -Ba10g10 --POLAR_CAP=none --BASEMAP_TYPE=plain --BASEMAP_AXES=WeS 50m_land.gmt -K -G224/224/224 > aeqd.ps GMT psxy -m -JE-105/90/15c -R-140/-70/65/90 50m_coastline.gmt -O -K -W100/100/100 >> aeqd.ps GMT psxy -m -JE-105/90/15c -R-140/-70/65/90 50m_borders.gmt -O -K -W100/100/100 >> aeqd.ps grep "2.000$\|4.000$\|6.000$\|8.000$\|0.000$" NP.xy | GMT psxy -m -JE-105/90/15c -R-140/-70/65/90 -O -K -Sc0.05c -G50/10/220 >> aeqd.ps grep "00.000$" NP.xy | GMT psxy -m -JE-105/90/15c -R-140/-70/65/90 -O -K -Sc0.5c -Gred >> aeqd.ps GMT psxy -m -JE-105/90/15c -R-140/-70/65/90 observed_north_magnetic_poles.txt -O -K -Sc0.25c -G240/117/104 -Wthick,0/0/0>> aeqd.ps GMT pstext -JE-105/90/15c -R-140/-70/65/90 -G0/0/0 -Dj0.15c/0.05c observed_north_magnetic_poles.txt -O -K >> aeqd.ps

GMT psxy -m -JG-105/75/6.5c -X9c -Y9c -Rg -Ba30g30 --POLAR_CAP=none 110m_land.gmt -O -K -G224/224/224 >> aeqd.ps GMT psxy -m -JG-105/75/6.5c -Rg 110m_coastline.gmt -O -K -W100/100/100 >> aeqd.ps GMT psxy -m -JG-105/75/6.5c -Rg 110m_borders.gmt -O -K -W100/100/100 >> aeqd.ps GMT psxy -JG-105/75/6.5c -Rg -Wfat,50/81/50 -L -Am -O -K << EOF >> aeqd.ps -140.0 65.0 -140.0 90.0 -70.0 65.0 EOF grep "2.000$\|4.000$\|6.000$\|8.000$\|0.000$" NP.xy | GMT psxy -m -JG-105/75/6.5c -Rg -O -K -Sc0.03c -G50/10/220 >> aeqd.ps GMT psxy -m -JG-105/75/6.5c -Rg observed_north_magnetic_poles.txt -O -Sc0.07c -G240/117/104 >> aeqd.ps gv aeqd.ps -orientation=landscape -resize }} }}

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