This bulletin presents the preliminary ground-based geomagnetic and cosmic data obtained by Polar Geophysical Institute in the forth quarter of 2000. Auroral data are published only for the quarter when observations were carried out.
All data are available by request.
The instrument has a range 2620 nT and a resolution of 5 pT. Magnetic observations in Loparskaya are gathered every second and registered in the digital form as the 10-sec averaged data. No absolute measurements have been done for the mentioned period in Lovozero. Absolute calibrations in Loparskaya have been performed with the proton magnetometer PM 001 and ferrosound magnetometer T-15. Absolute measurements are done two or three times per month. Quiet days are brand by the symbol Q in tables of geomagnetic K-indices.