Ice crystal c-axis orientation and mean grain size measurements from the Dome Summit South ice core, Law Dome, East Antarctica

The 1195.9m ice core was drilled by the the Australian Antarctic Division during the austral summers of 1987-88 to 1992-93. These data are from 185 individual thin sections obtained between a depth of 117m below the surface and the bottom of the DSS core at a depth of 1196m.

The median number of c-axis orientations recorded in each thin section was 100, with values ranging from 5 through to 111 orientations. The fields in this dataset are (for CSV format): name - the name of the ice core section longitude - the longitude of the location of the DSS core (decimal degrees) latitude - the latitude of the location of the DSS core (decimal degrees) number_of_c_axes - the number of c-axes in the section depth_actual - the actual depth of the thin section from the ice sheet surface to the top of the core section (metres) depth_ice_equivalent - actual depth converted to an ice equivalent depth (metres) section_orientation - thin section orientation ("vertical" or "horizontal") mean_horz_grain_area - arithmetic mean grain area (mm^2) grain_index - the identifier of the data point within the section colatitude - c-axis orientation colatitude (degrees) azimuth - c-axis orientation azimuth (degrees) (For Matlab format): name - the name of the ice core section c_cartesian - [N x 3] array of cartesian c-axis unit vectors.