By using the data of fhd vector proton precession magnetometer in the 1 . 0 min . sampling rate , we preliminary analyzed the anomalies of daily - variation spatial correlation before an earthquake occurred in this paper 摘要應(yīng)用fhd磁力儀垂直分量分鐘值觀測(cè)資料,初步分析了地震之前的日變空間相關(guān)性異常。