Verification and Analysis of the Dominant Azimuth Anomaly of the Geoelectric Fields at the Jiangyou Station,Sichuan Province
This paper verified on-site two anomalies at the Jiangyou Station,Sichuan Province such as 1)the discrete anomaly on dominant azimuth between the short polar range NS and NE directions that occurred on August 15,2022,and 2)the jump anomaly that occurred on November 29,2022.We conducted observation system inspection,environmental interference investigation,human interference investigation,typical interference analysis,anomaly quantification calculation,and earthquake case tracing.We suggest that the dominant azimuth data jump that occurred on November 29,2022 is related to human interference(electrode replacement),whereas the discrete changes in dominant azimuth that occurred from August 15,2022 to the present may be precursor anomalies.
the Jiangyou stationtelluric electric fieldsazimuth anomalyinterference analysis
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万方数据
