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  In the period from August 24 to September 08, the MTS Group consisting of 4 brigades carried out work on two profiles in the Kochkor district of Naryn region, Ukok-2 and Chon-Tuz. On the profile "Ukok-2", which is located south of Kochkorka village, team No. 1 and team No. 2 carried out work on magnetotelluric sounding (MTS) at 11 points. At 10 observation points, the duration of the MT field registration in the MTS mode was 16-18 hours, at the FT21 observation point in the DMTS mode, the duration of observations was about 300 hours.

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  The work was carried out using Phoenix MTU-5 measuring complexes in the normal registration mode. The start of work was preceded by calibrations of recorders and sensors of MT stations. In all observation points, a control recording of at least 40 minutes was preceded to assess the level of interference and the settings of the parameters for recording the working record. The electrical components of MT field were measured using measuring devices with electric dipoles 50 m. long. The magnetic field components were measured using MTC-50 induction sensors. At all sounding points, the grounding of the dipoles was carried out using non-polarizing electrodes, the grounding of dipoles was carried out on the principle of “sensor to sensor” with previous years of observations. The orientations of measuring installations at these points completely repeated the previous deployments.

  Also, at this time, seismic fields were recorded at the FT21 observation point using an installed gradient seismic installation.

  Upon completion of main work on Ukok-2 profile, in the area of FT15 observation point (MTS), team No. 4, using the Skala 48 multielectrode station, carried out 24-hour monitoring in amount of 36 registrations, the duration of each 42-44 minutes by electrotomography and induced polarization methods, the type of installation was “Schlumberger”.

  On the profile "Chon-Tuz", which is located south of Tuz village, team No. 3 carried out work on magnetotelluric sounding in AMTS mode at 15 observation points, where the duration of registration averaged 1 hour. The work was carried out using the Phoenix MTU-5A measuring complex in normal registration mode. The beginning of work was preceded by calibrations of MT station recorders and sensors. In all observation points, a control record was preceded to assess the level of interference and the settings of parameters of working record. The electrical components of MT field were measured using measuring devices with electric dipoles 50 m. long. The magnetic field components were measured using MTC-30 induction sensors. At all sounding points, the grounding of dipoles was carried out using non-polarizing electrodes.

  The team No. 4 on "Chon-Tuz" profile carried out the work by electrotomography methods and induced polarization using the multielectrode station "Skala 48". Data registration was performed by two types of installation: "Schlumberger" and "Venner". The station was operated using two multi-electrode cables, the length of each connecting cable is 120 m, the installation of electrodes was carried out in increments of 5 meters, the total number of electrodes when deploying two connecting cables is 48 pieces. The length of work site is approximately 3600 m, registration was carried out at 29 base observation points.

  Upon completion of main work on the profile, in the area of FT18 point (MTS), work was carried out on 24-hour monitoring in the amount of 35 registrations, the duration of each was 42-44 minutes by electrotomography and induced polarization methods, the type of installation was “Schlumberger”.

 

Photogallery

Geographic location

40 km. from Bishkek