Pulsed nuclear magnetic resonance techniques were used to study small ice particles with large surface/volume ratios. A quasi-liquid layer existed on the ice surface. The temperature dependence of the features of the nuclear magnetic resonance spectra, the correlation time for rotational motion, and the self-diffusion coefficient of the layer were determined. It was found that the frequency of rotational molecular motion, and the self-diffusion coefficient (table 10), were higher than those of bulk ice by 5 orders of magnitude and 2 orders of magnitude, respectively. The activation energy was equal to 0.24eV.

Y.Mizuno, N.Hanafusa: Journal de Physique - Colloque Cl, 1987, 48[3], 511-7

Table 10

Self-Diffusivities in a Quasi-Liquid Layer on Ice