Which mechanism causes signal attenuation as electromagnetic waves propagate through a water body containing dissolved minerals?

💡 Explanation

As the electromagnetic wave passes, polar water molecules and dissolved minerals undergo dipole relaxation because the oscillating electric field induces molecule rotation, converting wave energy into heat that attenuates the signal. Therefore, dielectric losses from dipole relaxation occur, rather than scattering, heating, or polarization shifts, which depend on different physical phenomena.

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