This paper describes the measured 50- to 75-GHz band refractive index, complex dielectric constant, and penetration depth of fallen snow )fresh and corn snow) in the suburbs of Eniwa City in Hokkaido, Japan, calculated from the propagation delay time and loss measured through the sampled naturally piled snows, in order to apply milli- buried materials or road signs in/under the fallen snow. We show that the real part of the dielectric constant depends linearly on snow density, and the penetration depth of corn snow is much smaller than that of ice and fresh snow, after statistically evaluating data measured in different directions and in different parts of the samples.
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