SIMULTANEOUS MONITORING OF THE TEMPORAL VARIABILITY OF MAGNETOTELLURIC IMPEDANCE DURING THE POWERFUL KAMBARATA INDUSTRIAL EXPLOSION
The paper presents an approach to process magnetotelluric impedance monitoring data in the search for the changes in geoelectrical structure related to a powerful industrial explosion during the construction of Kambarata hydroelectric station in Kyrgyzstan. The stationary remote reference estimates of impedance and its invariants prior to and after the explosion were compared. The impedance changes over time were analyzed for a series of time windows. The new software tools for analysis, visualization, rejection (by the value of relative estimation errors and coherency sorting criteria) and the final robust averaging of partial impedance estimates have been developed and tested. The necessity of simultaneous monitoring systems for solving problems of magnetotelluric monitoring is demonstrated.