A simulating experiment study on the variations in ultra-low frequency (ULF) magnetic field and self-potential during rock cracking was carried out in a magnetic field-free space.

• 在零磁空间对超低频段的磁场和自电位的变化进行了岩石破裂的实验研究,细致地揭示出电场、磁场出现异常变化的全过程,对深入认识超低频电磁信号的微观机理具有重要的意义。