Study On The Features And Mechanisms Of Phase Correlations Of Geoelectric Field Tidal Waveform In Each Measuring Direction

The tidal geoelectric field originates from the solar quiet current in the ionosphere and tidal forces,which are the primary compositions of the telluric field.Geoelectric fields measured in muiti-directions,however,the phase correlation features of geoelectric field tidal waveform among multi-directions are still lack of system study.Based on minute observational data from more than 100 geoelectric field stations in mainland China,this study found that the phase correlations of geoelectric field tidal waveforms in each measuring direction are always the same or opposite.Using a model of periodic seepage or the movement of rock crack water and electric charges in crack water,we determined that the preferred orientation of rock cracks(? angle)significantly influences phase correlations in each direction.At the same time,this paper choosed a station of clear and steady preferred orientation,and the influence of various interferences on the original data was simulated.For the original data disturbed and the jump data caused by device replacement,we calculated the ? angle with application of tidal harmonics and found that the calculation results of ? angle were influenced relatively small by the interference and device replacement,which indicates that the results of ? angle affected by the complex environment condition is relatively small.The above research results enrich our understanding of the mechanisms of geoelectric field variation features and data analysis,which have practical significance for the geoelectric field observation technology,the station reconstruction,and the data interference analysis under the complex environment.