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The geographic positions are generally based on a satellite survey from 1981 and agreed with the positions used inside EROS. The Tromsø geographic position comes from a later GPS measurement while the Longyearbyen latitude and longitude come from a measurement with a hand held GPS.
The geomagnetic values are calculated for 1 January, 2010, using the DGRF/IGRF model. The values were retrieved 5 February, 2010.
Location |
Tromsø |
Kiruna |
Sodankylä |
Longyearbyen |
|---|---|---|---|---|
Geographic latitude |
69°35' N (69.58°) |
67°52' N (67.87°) |
67°22' N (67.37°) |
78°09' N (78.15°) |
Geographic longitude |
19°14' E (19.23°) |
20°26' E (20.43°) |
26°38' E (26.63°) |
16°01' E (16.02°) |
Altitude |
86 m |
418 m |
197 m |
445 m |
Corrected geomagnetic latitude |
66.73° |
64.89° |
64.14° |
75.43° |
Corrected geomagnetic longitude |
102.18° |
101.87° |
106.59° |
110.68° |
L-shell value (ground) |
6.45 |
5.55 |
5.26 |
15.81 |
L-shell value (300 km) |
6.70 |
5.81 |
5.48 |
- |
Typical values of the geomagnetic field:
Location |
Tromsø |
Kiruna |
Sodankylä |
Longyearbyen |
|---|---|---|---|---|
Dip angle (ground) |
78.24° |
77.43° |
77.39° |
82.23° |
Dip angle (300 km) |
78.19° |
77.34° |
77.29° |
82.35° |
Declination (ground) |
7.12° |
7.45° |
10.68° |
6.41° |
Declination (300 km) |
5.49° |
5.88° |
8.73° |
4.05° |
B-field north (ground) |
10.74 µT |
11.40 µT |
11.40 µT |
7.33 µT |
B-field north (300 km) |
9.56 µT |
10.18 µT |
10.20 µT |
6.41 µT |
B-field east (ground) |
1.34 µT |
1.49 µT |
2.15 µT |
0.82 µT |
B-field east (300 km) |
0.92 µT |
1.05 µT |
1.57 µT |
0.45 µT |
B-field down (ground) |
51.96 µT |
51.58 µT |
51.88 µT |
54.05 µT |
B-field down (300 km) |
45.95 µT |
45.55 µT |
45.77 µT |
47.88 µT |
B-field hor. (ground) |
10.82 µT |
11.50 µT |
11.60 µT |
7.38 µT |
B-field hor. (300 km) |
9.61 µT |
10.23 µT |
10.32 µT |
6.43 µT |
B-field abs. (ground) |
53.10 µT |
52.84 µT |
53.16 µT |
54.56 µT |
B-field abs. (300 km) |
46.95 µT |
46.69 µT |
46.92 µT |
48.31 µT |
