1. Freezing Rivers: Hardening of the ArteriesBy
Samuel S. Demientieff

2. Photos courtesy of: • CRREL River Ice guide and Glossary. http://www
Photos courtesy of: • CRREL River Ice guide and Glossary • Ice Breakup Reconnaissance in Alaska • UAF Alaska Archival Film Project - AAF-10 -Old Minto,

3. • Bank Ice
• New Ice
• Glass Ice

4. Frazil or Slush Ice

5. Frazil Pans

6. Anchor Ice

7. Anchor Ice - River

8. Anchor Ice

9. Anchor Ice

10. Anchor Ice

11. Border or Bank Ice

12. Sheet Ice Cover

13. Candled or Honeycombed Ice

14. Freezeup Jam

15. Breakup Jam

16. Shear Walls (after jam)