The distribution characteristics of short period geomagnetic variations in Shaanxi region
In order to investigate the characteristics of short period geomagnetic variations in Shaanxi region, a temporary measurement profile from Shiquan in the southern part of Shaanxi to Ningxian in Gansu was set up in September of 1996 to carry out simultaneous observation of three-component geomagnetic...
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| Veröffentlicht in: | Acta seismologica sinica 1998-11, Vol.11 (6), p.719-727 |
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| creator | Fan, Guo-Hua Yao, Tong-Qi Han, Ke-Li Zhu, Ke-Jia Gu, Zuo-Wen |
| description | In order to investigate the characteristics of short period geomagnetic variations in Shaanxi region, a temporary measurement profile from Shiquan in the southern part of Shaanxi to Ningxian in Gansu was set up in September of 1996 to carry out simultaneous observation of three-component geomagnetic variations along the profile. The vertical transfer functions, the horizontal transfer functions and the spectral component's relationship of each period segment at each site in the period range from 3 min to 2 h were statistically calculated. Random data theory was applied to the data processing for reference, which led to a relatively good result. Analysis of the data point out that short period geomagnetic variations are affected by the regional influence of underground anomalous inductive current concentration between Wugong and Qianling in the nearly E-W direction and by the influence of local inductive current in nearby area of measurement site. The main distribution feature is that vertical transfer functions reverse between Wugong and Qianling and frequency responses of the transfer functions have maximum at period about 20 min.[PUBLICATION ABSTRACT] |
| doi_str_mv | 10.1007/s11589-998-0007-9 |
| format | Article |
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The vertical transfer functions, the horizontal transfer functions and the spectral component's relationship of each period segment at each site in the period range from 3 min to 2 h were statistically calculated. Random data theory was applied to the data processing for reference, which led to a relatively good result. Analysis of the data point out that short period geomagnetic variations are affected by the regional influence of underground anomalous inductive current concentration between Wugong and Qianling in the nearly E-W direction and by the influence of local inductive current in nearby area of measurement site. 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The vertical transfer functions, the horizontal transfer functions and the spectral component's relationship of each period segment at each site in the period range from 3 min to 2 h were statistically calculated. Random data theory was applied to the data processing for reference, which led to a relatively good result. Analysis of the data point out that short period geomagnetic variations are affected by the regional influence of underground anomalous inductive current concentration between Wugong and Qianling in the nearly E-W direction and by the influence of local inductive current in nearby area of measurement site. The main distribution feature is that vertical transfer functions reverse between Wugong and Qianling and frequency responses of the transfer functions have maximum at period about 20 min.[PUBLICATION ABSTRACT]</abstract><cop>Beijing</cop><pub>Springer Nature B.V</pub><doi>10.1007/s11589-998-0007-9</doi><tpages>9</tpages></addata></record> |
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| issn | 1000-9116 1674-4519 1993-1344 1867-8777 |
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| source | Alma/SFX Local Collection; SpringerLink Journals - AutoHoldings |
| subjects | Data points Data processing Earthquakes Geomagnetism Geophysics Mathematical analysis Plate tectonics Segments Seismic phenomena Seismology Spectra Transfer functions |
| title | The distribution characteristics of short period geomagnetic variations in Shaanxi region |
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