Probability distributions for the heights and spacings of sea ice pressure ridges are described and compared with data from airborne laser profiles and submarine sonar profiles. The distributions are based on the variational calculations of Hibler et al. (1972) but take into account the effects of finite slope angles of ridges and of the criterion used to identify an independent ridge during computer reduction of data. The modified distributions are shown to give a much better fit for small ridge spacings and slightly better fit for small ridge heights than the 1972 theory. |