Oulu, Finland (OULU)

Type:

9-NM-64 (Chalk River tubes)
In opeartion
Since April 1964
Coordinates:
65.05°N, 25.47°E
Altitude:
15 m a.s.l.
Geomagnetic cutoff:
about 0.8 GV
Time resolution:
1-hr - since 1964
5-min - since 1985
1-min - since 1995
10-sec - 1995-2008
Web-site:
http://cosmicrays.oulu.fi
Operated by
Sodankyla Geophysical Observatory of the University of Oulu
Responsible person:
Detailed station information:
April 1964 - present
Conditions for Use of Data:
Details about the use of the Oulu NM data can be found in http://cosmicrays.oulu.fi/readme.html
Reference:
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.