Journal of Glaciology
From observations and calculations of crack patterns in ice, it is suggested that a similar mechanism may account for cracking over a wide range of scales.
Schulson, E. M. and Hibler, W. D., "The Fracture of Ice on Scales Large and Small: Arctic Leads and Wing Cracks" (1991). Open Dartmouth: Peer-reviewed articles by Dartmouth faculty. 1776.