Many sea ice terms imply characteristics not yet captured in the ontology

```
For example many "ice of land origin" terms imply a max height about sea level 
(freeboard?) or an ice color (blue or blue-green), etc.  Should these be 
captured in the ontology?


```

Original issue reported on code.google.com by `rduerrAt...@gmail.com` on 22 Dec 2011 at 1:17
