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RESEARCH ON THE PROPAGATION OF EXTREMELY LOW FREQUENCY ELECTROMAGNETIC WAVE IN SHALLOW SEA AREA

By X. Qu, G. Fang, and H. Yin

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Abstract:
This paper analyzes the extremely low frequency electromagnetic wave excited by a horizontal electric dipole immersed in the sea. Analytical solutions in the air from HED underwater are deduced using a three-layer model. The effect of the sea-air interface is studied along two perpendicular directions. The electric field is inversely proportional to the square of r while the magnetic field is inversely proportional to the cube of r along the interface. By decomposing the total response into direct, up-going and down-going components, contributions of each component are discussed, indicating that interference cancellation effect occurs among the arrival electromagnetic signals from multi-paths at specific offsets and frequencies.

Citation:
X. Qu, G. Fang, and H. Yin, "Research on the Propagation of Extremely Low Frequency Electromagnetic Wave in Shallow Sea Area," Progress In Electromagnetics Research M, Vol. 52, 89-97, 2016.
doi:10.2528/PIERM16101306

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