See Readme file ... data collected as header, depth (m), diameter (cm)
Borehole diameter was attempted to be wide enough to allow passage of a large ADCP instrument ... this worked well in the upper parts of the borehole but not at great depth in the permeable marine ice layer (530-600 m).
Note - depths and altitudes provided in spatial coverage are referenced back to sea level.
The minimum depth asl refers to the height of the ice surface.