电磁波在海水传播过程中,要受到海水和海底介质的影响.海底介质特征对电场和磁场的衰减影响是不一样的.当接收点在海底附近时,磁场衰减要远大于电场;当接收点距离海底较远时,磁场的衰减基本与电场衰减相当.%The electromagnetic wave will be influenced by sea water and seabed medium during propagating in sea water. It shows that the electric wave and magnetic wave influenced by the characteristics of seabed medium is different:the attenuation of the magnetic wave is more than the electric wave near seabed, but they have nearly same attenuation far from seabed.
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