Oulu, Finland

Operated by Sodankyla Geophysical Observatory of the University of Oulu.


Detector9-NM-64 (Chalk River tubes)
Geographic latitude65.05° N
Geographic longitude25.47° E
Altitude15 m asl
Effective vertical cutoff rigidity~0.8 GV
In operation sinceApril 1964
Time resolution:1-hr - since 1964
5-min - since 1985
1-min - since 1995
10-sec - 1995-2008

Detailed station information

Conditions for Use of Data

Details about the use of the Oulu NM data can be found in http://cosmicrays.oulu.fi/readme.html


Web-site: http://cosmicrays.oulu.fi

Responsible person: Ilya Usoskin


Kananen, H., P.J. Tanskanen, L.C. Gentile, M.A. Shea and D.F. Smart, A quarter of a century of relativistic solar cosmic ray events recorded by the Oulu neutron monitor, Proc. 22nd ICRC, 3, 145-148, 1991.