从全球磁场减去地核主磁场和变化磁场及其感应磁场后,就得到岩石圈磁场,又称地壳磁场,或地磁异常.地壳磁场是地磁场的重要组成部分,对导航、通信、地球物理勘探等有重要意义.本文简要综述近年来在地壳磁场基本信息获取方面取得的重大进展,特别是Oersted、CHAMP等卫星磁侧的最新成果,介绍在此基础上建立的全球磁异常模型,展望地壳磁场研究的发展趋势和应用前号.
The crust magnetic field, or iithospheric magnetic field, can be deduced by subtracting the main field, variation field and its induced counterpart from the total field, This field is essential to navigation, communication, geophysical exploration and many others. In this paper, the developments on data acquistion are briefly reviewed, including ground, marine, airborne, and satellite magnetic surveys, focusing on magnetic satellites, such as Oersted, CHAMP, etc. Global crust magnetic models are introduced.Finally, a brief prospect is given on future studies and applications of the crust magnetic models.