氷のリモートセンシングの基礎的研究

氷の誘電的性質を中心にして

抄録

The measurements of dielectric constants of ice were made at 10 GHz with a standing wave method using Antarctic core ice, Mendenhall Glacier ice and artificial ice. The obtained results are as follows. The relation between permittivity, ε', and ice density, p, is given by ε'=2.8p+0.5. The loss factor, ε", is not influenced by grain-boundaries and/or dislocations but by impurity concentration. The temperature, T, dependence of conductivity, σ, is given byσ=σ₀ exp(-E/RT). In the case of artificial ice, E=31 kcal/mole at temperatures higher than -8^°C and E=6.2 kcal/mole at temperatures lower than -8^°C.
Based on these results, the importance of the basic study in the problems on remote sensing in cryosphere is discussed.