- 1 R 3 A 10 Khz Parallelly Polarized Electromagnetic Wave In Air Is Incident Obliquely On An Ocean Surface At A Near G 1 (369.6 KiB) Viewed 22 times
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(1+r) 3. A 10-kHz parallelly polarized electromagnetic wave in air is incident obliquely on an ocean surface at a near-grazing angle 0. = 889, as shown below. Assume &, = 81, H, = 1, 0 = 4 (S/m) for seawater and the induced surface current at the interface can be neglected. (25%) (a) Determine whether the ocean is low loss or high loss under the current condition. (b) For the incident and transmitted waves, write down their complex electric and magnetic fields based on the above result. Calculate the values of their phase factors and attenuation factors, if any, along wanil -directions. (c) Find the angle of refraction based on the above results. (d) Find the transmission coefficient based on the above results. (e) For the transmitted and incident waves, write down the expressions of their time-average Poynting vectors based on the above results. Calculate the ratio of their absolute values.