Cosmic Ray Station
firstname.lastname@example.org - last update: 1 April 2010 (RR)
measurements in Oulu started in 1964 in a wooden barrack with a standard
9-NM-64 neutron monitor (NM) consisting of three units each of three counters.
The monitor was moved to its present site (65.05°N, 25.47°E) in
September 1973. Because of its northern latitude, the building has a pyramid
shaped steep roof to prevent snow from accumulating on it. The Oulu station
is a part of the World Network of Neutrom Monitors.
The station was managed by Hannu
Kananen (deceased in March 2000) since the very beginning till 31/12/1999.
Since 01/01/2000 the Station is managed by Ilya
The stations is a part of the Oulu
unit of the Sodankylä Geophysical Observatory (SGO),
which is part of the Oulu University.
The counts of the neutron monitor are accumulated over 1-minute and
1-hour intervals. A separated data collecting system (built by the University
of Turku) with 10 seconds recording time is also available. The
data are regularly sent to World Data Centers (A,
and other scientist (see Kananen et al., 1991). Cosmic rays are also studied
in Oulu (see research in Oulu).
Description (pdf-file) of the Database is here.
using the Oulu NM data
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.
If you have questions/suggestions/comments concerning the Oulu NM, please
contact Ilya Usoskin