Crystallographic analysis of the Dome Fuji ice core

A comprehensive study of ice crystal fabrics and textures on the Dome Fuji ice core shows that 1) nucleation-recrystallization did not occur, 2) the distribution of c-axes gradually changes with depth from a random orientation pattern near the surface to one with a single, sharp maximum in the vertical at 2500 m, 3) the mean crystal size steadily increases with depth except for abrupt decreases near 420, 1800,2000, 2200, and 2300 m; and 4) the aspect ratio of individual crystals increases with depth until 1500 m. Analysis of the misorientation angle between adjacent crystals indicates that rotation-recrystallization was activated below 1300 m. Also, the clustering of c-axes is weakened at depths containing layers with high impurity concentrations.

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