Study of ELF electromagnetic fields from a submerged horizontal electric dipole positioned in a sea of finite depth

摘要

Formulas for extremely low frequency (ELF) electromagnetic fields generated in a sea of finite depth by a submerged horizontal electric dipole (HED) are derived based on an air-water-seafloor three-layer model. Field components in seawater are computed using numerical integration technique and Euler's transform. The effects of frequency, sea depth, seabed conductivity and depth of submerged transmitting HED on the electromagnetic field distribution in a sea are studied, and substantive results are obtained.