Comparative Analysis of Cave Strain and Borehole Bulk Strain of the Tai'an Seismic Station |
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| Authors: | Meng Jianguo Zhang Hui Jiang Qifeng Lu Shuangling Li Huiling Yang Bin and Zhou Juntai |
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| Institution: | Tai''an Seismic Station, Earthquake Administration of Shandong Province, Tai''an 271000, Shandong, China,Changyi Seismic Station, Earthquak Administrationf of Shandong Province, Changyi 261300, Shandong, China,Earthquake Administration of Shandong Province, Jinan 250014, China,Tai''an Seismic Station, Earthquake Administration of Shandong Province, Tai''an 271000, Shandong, China,Tai''an Seismic Station, Earthquake Administration of Shandong Province, Tai''an 271000, Shandong, China,Earthquake Administration of Shandong Province, Jinan 250014, China and Zoucheng Seismic Station, Jining 273500, Shandong, China |
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| Abstract: | Based on the cave strain observation data in 2013 at Tai''an seismic station, we use the Venedikov harmonic analysis method to calculate the cave strain measurement and phase lag of the tide factor, and qualitatively evaluate the stability of the tidal factor for observational data evaluation. At the same time, the two measurement items of the observation instrument are calculated, and the correlation strain parameters are extracted and compared. On this basis, the strain parameter time series calculation is carried out on the data quality of Tai''an seismic station, which is relatively stable, and the 2 sets of instruments are compared. Through the analysis, it is found that the stress field is abnormal, and the corresponding relationship between the anomaly of the stress field and the gravity field is compared and analyzed. |
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| Keywords: | Strain parameters Cave strain Strain Stress field |
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