Monitoring of the Earth magnetic field

Absolute measurements (total vector of magnetic induction) are carried out to determine the base-line values of variation magnetometers and to control the general magnetic state in the huts and in the vicinity. To determine the magnetic declination D and inclination I, DI-magnetometers (declinometer/inclinometer, Diflux) are used. Magnetic induction vector module F is measured by proton magnetometers. Absolute measurements are carried out 5-6 time a week, in three series (on a main and a stand-by DI-magnetometers). The regularity is provided by two technicians-magnetologists and occasionally by two more surveyors.

Variation measurements provide the data on the variations of magnetic induction vector components at the frequencies up to 1 Hz and more.  These variations are the deviations from some levels (base lines) the values of which are determined by absolute observations.
The magnetometers FGE and GSM-90 were installed within the International Agreement between IKIR and GFZ (Potsdam, Germany). The magnetometers FRG-601 and MAGDAS were installed within the framework of the Agreements with Japanese scientific organizations.

Monitoring of atmospheric electricity

Diurnal Ez variation (electric field potential gradient of the near ground air).
Diurnal variation of electric conductivity of the near ground air.

Monitoring of weather parameters

Davis Vantage Pro II weather station

Location of observatory «Paratunka» (φ=52° 58'21 N, λ=158° 15'02 E, h=76m )

The magnetic huts of GPhO «Paratunka» are located about 300 m to the North from the main building of IKIR. There are four huts:

1. for absolute observations (main hut of the magnetic observatory) where absolute measurements of magnetic declination D, inclination I and field module F are carried out. All the measurements at the observatory are deduced to the main pillar in the absolute hut, thus, special steps has been taken to prevent the magnetic noise and to provide stable magnetic state.  To determine the magnetic declination, one needs to know the location of the geographical North which is defined by azimuth mark (target rod) in practice. The azimuth is determined by astronomic observation of the Sun or the Pole Star. DI-magnetometers Mag-01H and LEMI-203В, and a proton magnetometer GS-19FD (field module measurement mode) are installed in the hut; 
2. for variation measurements (main). The peculiarity of the hut is a special inner chamber around the pillars that provides more stable temperature conditions for the variometers. Variometer FGE, proton magnetometer GSM-90, variometer FRG-601 MAGDAS sensors are mounted in the hut.
3. for variation measurements (additional). The hut is small with a low pillar for dIdD-variometer GSM-19FD. As long as GSM-19FD differs by low temperature dependence and is capable of operating in a wide temperature range, this hut is not heated. Temperature stabilization is passive owing to the inner thermal insulating layer;
4. for recording instrumentation (technical hut). It does not require magnetic cleanliness. There are PCs, registration systems, magnetometer power units, UPSs, local network equipment, control-measuring devices there. Repair works and adjustment of the instrumentation are carried out in this hut.