【摘要】 以陕西关中地区地磁垂直分量（Ｚ）作为计算暴时扰日变化ＤＳ（Ｚ）的加卸载响应参量，从ＤＳ（Ｚ） 的响应比值Ｐ（Ｚ） 的变化表明， 在泾阳地震前， 靠近震中的泾阳、乾陵二台出现Ｐ（Ｚ） ≥３． ５ 的异常变化，而周至、华阴台却没有这种异常变化。这表明加、卸载响应比方法可用来预测陕西关中地区的中强地震。同时，也表明在此方法的使用过程中，必须考虑台站所处的地理位置及地质构造条件。更多还原

【Abstract】 By using the geomagnetic vertical component (Z) in Guanzhong region, Shaanxi province as a load unload response parameter in computing D S(Z), it is found from the changes of loading unloading response ratio P(Z) of D S(Z) that, before the Jingyang earthquake anomaly changes of P(Z)≥3.5 occurred at Jingyang and Qianling geomagnetic stations, which are close to the epicenter. Instead, there was not such change that occurred in Zhouzhi and Huayin counties. It is shown that the loading unloading response ratio method can be used to predict moderately strong earthquakes in Guanzhong region, Shaanxi province. It indicates that geographic locations of observational stations and geological structures beneath them should be considered when this method is used.更多还原