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.
采用航磁数据向下延拓到海面代替船测数据，可提高磁力测量成果的综合利用率。
Aeromagnetic data downward continuation to sea level instead of Marine magnetic survey data can improve use capability of survey data.
该工作不仅为该区下一步勘探指明了方向，也为在沙漠区进行地面磁力测量积累了经验。
This work points out the exploration direction of Durimu Sag and contributes to the knowledge of surface magnetic density surveying in desert areas.
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