论文部分内容阅读
用华北地区十二个地磁台资料，用时空变量统一拟合法，得到地磁场理论模型。然后消去时、空两方面的正常背景，利用剩余场来探寻地震的中长期前兆。密集等值线分布与应力方向和构造单元的走向是大体一致的，这说明利用地磁场来监视应力的积累过程也许是可能的。最后，给出了未来１—３ 年强震危险区初步的预报意见。
By using the data of twelve geomagnetic stations in North China, the geomagnetic theory model is obtained by using the uniform fitting method of time-space variables. Then eliminate the normal background of both time and space, use the remaining field to explore the long-term precursor of the earthquake. The distribution of dense contour lines is generally consistent with the direction of stress and the trend of tectonic units, suggesting that it may be possible to monitor the accumulation of stresses using geomagnetic fields. Finally, the preliminary forecast opinions about the strong earthquakes in the next 1-3 years are given.