S/N | Properties (Unit Cell) | Ice | Structure I (sI) | Structure II (sII) |
1 | Water molecules number | 4 | 46 | 136 |
2 | Lattice parameters at 273 K, nm | a = 0.452, c = 0.736 | 1.20 | 1.73 |
3 | Dielectric constant at 273 K | 94 | ~58 | 58 |
4 | Water diffusion correlation time (μsec) | 220 | 240 | 25 |
5 | Water diffusion activation energy (kJ/m) | 58.1 | 50 | 50 |
6 | Shear Velocity (Vs), m/s | 1949 | 1963.6 | 2001.1 |
7 | Compressional Velocity (Vp), m/s | 3870.1 | 3778.0 | 3821.8 |
8 | Refractive index, 638 nm, −3˚C | 1.3082 | 1.3460 | 1.350 |
9 | Density, kg/m3 | 916 | 912 | 940 |
10 | Poisson’s Ratio | 0.33 | ~0.33 | ~0.33 |
11 | Bulk Modulus (272 K) | 8.8 | 5.6 | - |
12 | Shear Modulus (272 K) | 3.9 | 2.4 | - |
13 | Velocity Ratio (comp./shear) | 1.99 | 1.92 | 1.91 |
14 | Linear thermal expn., K−1 (200 K) | 56 × 10−6 | 77 × 10−6 | 52 × 10−6 |
15 | Heat capacity, J/kg-K | 3800 | 3300 | 3600 |
16 | Thermal conductivity, W/m-K (263 K) | 2.23 | 0.49 ± 0.02 | 0.51 ± 0.02 |