As a key parameter of magnetotelluric method, Tipper has not been used widely.Because the vertical component of magnetic field was quite weak, only a few researchers worked on it.

• 摘要倾子是大地电磁测深方法的一个重要资料，到现在为止，该资料在生产中基本上没有被使用，原因是因为垂直磁信号十分微弱。