Geomagnetic observations



67° 22' N    26° 38' E        ( 67.37° N, 26.63° E )


63.8°, 120.0°, -26.7°, dip = 76.7°

Corrected geomagnetic:  

64.0°, 107.2°, L-value 5.3

Altitude a.s.l. (national N60 system):

180 metres

The oldest routine task of SGO is the regular measurement of the geomagnetic field. The measurements began on 1st January 1914 and continue until today. The only longer gap in the time serie is between 16th September 1944 and 1st January 1947 due to the destruction of the observatory during the World War II.

The analog La Cour was in operation until 31st December 1995. Nowadays digital data is produced in the variation room of the observatory by a Danish fluxgate magnetometer (FGM), Polish torsion photoelectric magnetometer (TPM) and a modified Russian TPM magnetomete. Weekly measurements of the absolute magnetic field provide the base line control.

The geomagnetic observatory is part of the INTERMAGNET since 1995 and IMAGE networks. The near real-time data is also used in EMMA network and in a field line resonance monitor built in EU/FP7 funded PLASMON project.

SGO geomagnetic data sources can be browsed here: SGO Geomagnetic Data

Observer in charge:

Tero Raita (geophysicist)

Phone: +358-(0)294-480 864

Fax: +358-(0)16-610284




Tero Raita
Sodankylä Geophysical Observatory
Tähteläntie 62
FIN-99600 Sodankylä, Finland




Last updated: 26.10.2016