Fig. 1. a. Aerial photograph of 
an ice-floe with fishermen’s ho 
les; b. Aerial photograph of an 
outflow crack. 
Fig. 2. Ground photograph of 
an outflow crack 
Fig. 3. Icing on an outflow 
crack 
Fig. 4. Aerial photographs of 
melting hummocks obtained in 
June within an interval of 10 days 
Fig. 5. Aerial photograph of a 
black-ice field