地磁学

例句：

1. 1. The studyof the Earth's magnetic field isa fundamental aspect of geophysics.
   研究地球磁场是地球物理学的基本内容。
2. 2. Thegeomagnetic storms can have severe impacts on communication systems.
   地磁暴对通信系统有严重的影响。
3. 3.Understanding the principles ofgeomagnetism is crucialfor predicting and mitigatingnatural disasters.
   理解地磁学的原理对于预测和减轻自然灾害至关重要。