The staff of Electromagnetic observation Group of Laboratory of Integrated Studies of Dynamic Processes in Geophysical Fields (EOG LIS) carried out a series of experiments for registration of variation of the total intensity of geomagnetic field during the periods of electromagnetic soundings with ERGU-600-2 system.

The proton magnetometer MV-07 is used as a recorder, which has a measurement range of 20-100 μT and resolution of 0.01 nT with data storage in flash memory of the device in a binary format.

The measurements were carried out with a sampling rate of 5 seconds and a duration of 6 hours during the ERGU-600-2 operating sessions.