| 地磁总强度资料在地震预报中的应用 |
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| 引用本文： | 姚法章.地磁总强度资料在地震预报中的应用[J].西北地震学报,1984,6(3):44-48. |
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| 作者姓名： | 姚法章 |
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| 作者单位： | 河北省地震局 |
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| 摘 要： | 本文应用地磁总强度资料,用两台差消除地磁场短周期变化,同时亦削弱了长期变影响,从而使年变呈线性变化。然后采用趋势面法求得剩余长期变地区性改正量。资料处理后,显示唐山大震前可能有一年半以上的异常,变化幅度约10伽马,对台网中其它几个6级左右地震亦有较好的异常反应。
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| 收稿时间： | 1983/4/11 0:00:00 |
APPLICATION OF THE TOTAL GEOMAGNETIC INTENSITY DATA IN EARTHQUAKE PREDICTION |
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| Yao Fazhang.APPLICATION OF THE TOTAL GEOMAGNETIC INTENSITY DATA IN EARTHQUAKE PREDICTION[J].Northwestern Seismological Journal,1984,6(3):44-48. |
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| Authors: | Yao Fazhang |
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| Institution: | Seismological Bureau of Hebei Province, Shijiazhuang, China |
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| Abstract: | In this paper, the total geomagnetic intensity data and the difference of total geomagnetic intensity between two stations were used to eliminate short-term change of geomagnetic field, and at the same time the influence of long-term change was weakened, so that the annual change is a linear change. Based on this, the regional correction value of the residual long-term Change was obtained by the method of trend surface. After processing the data, it was shown that before the great Tangshan earthquake there were. probably anomalies for more than one and a half years, with change amplitude about 10 gels. Within the network of stations, the other earthquakes with magnitude of about 6 were also accompanied by anomalies of total geomagnetic intensity. |
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