Surface electromagnetic waves on sea water

Resumo

Experimental data on propagation of electromagnetic waves over the ocean surface along a 235-km path in the frequency range 5–30 MHz are analyzed. It is found that the field attenuation at frequencies below 15 MHz, which is anomalously weak according to the ground ray theory, is related to excitation of surface waves and agrees well with the data obtained in the frequency range 0.6–6.0 GHz.