地磁日变基值的选取是海洋磁力测量地磁日变改正的重要内容。
The selection of base value is critical to the geomagnetic diurnal variation correction in Marine magnetic survey.
结果指出，广州地磁Z分量日变幅的年平均与太阳活动指数F_（10.7）的年平均存在良好的线性相关；
The results show that, the annual averages of daily variations of Z are favorably linearly correlative with the annual averages of the F_(10.7);
结果指出，广州地磁Z分量日变幅的年平均与太阳活动指数F_（10.7）的年平均存在良好的线性相关；
The results show that, the annual averages of daily variations of Z are favorably linearly correlative with the annual averages of the F_(10.7);
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