Original file (SVG file, nominally 567 × 581 pixels, file size: 470 KB)
Summary
Year
Latitude
Longitude
Observer
1831
70° 05' N
96° 47' W
James Ross
1904
70° 31' N
96° 34' W
Amundsen
1948
73° 54' N
100° 54' W
Serson, Clark
1962
75° 06' N
100° 48' W
Loomer, Dawson
1973
76° 00' N
100° 36' W
Niblett, Charboneau
1984
77° 00' N
102° 18' W
Newitt, Niblett
1994
78° 18' N
104° 00' W
Newitt, Barton
2001
81° 18' N
110° 48' W
Newitt, Mandea, McKee
2007
83.95° N
120.72° W
Newitt, Chulliat, Orgeval
GMT Source Code
GMT is a Generic Mapping Tool.
<source lang="bash">
!/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
}}
}}
Licensing
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File history
Click on a date/time to view the file as it appeared at that time.
Date/Time Thumbnail Dimensions User Comment
current 01:57, 11 August 2013 567 × 581 (470 KB) Cavit Added 2007 observed position from Newitt et al., Location of the North Magnetic Pole in April 2007, Earth Planets Space, 61, 703–710, 2009, http://www.terrapub.co.jp/journals/EPS/pdf/2009/6106/61060703.pdf
14:09, 25 January 2012 567 × 581 (468 KB) Tentotwo Corrected latitude labels
13:56, 25 January 2012 567 × 581 (468 KB) Tentotwo Fixed missing labels
13:34, 25 January 2012 567 × 581 (470 KB) Tentotwo Reduced font size
12:57, 25 January 2012 567 × 581 (469 KB) Tentotwo Corrected font for grid labels
12:55, 25 January 2012 567 × 581 (469 KB) Tentotwo Smaller extent for wedge map
13:44, 23 January 2012 592 × 597 (562 KB) Tentotwo Corrected font for grid labels
13:42, 23 January 2012 592 × 597 (562 KB) Tentotwo Made labels slightly smaller
13:14, 23 January 2012 592 × 597 (558 KB) Tentotwo Corrected SVG code
12:24, 23 January 2012 592 × 597 (558 KB) Tentotwo Corrected page geometry
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