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list off illustrations 



figure page 



1. Track chart of USS NEREUS in the Bering and Chukchi Seas . . 8 



2. Bottom sediment chart of the Bering Sea 12 



3. Fathogram showing a profile of the continental slope and the 

 shelf of the southern portion of the Bering Sea 14 



4. Fathogram of the central and northern portions of the Bering 

 Sea, Bering Strait, and the Chukchi Sea 15 



5. Bottom sediment chart of the Chukchi Sea 18 



6. Fathogram of the Chukchi Sea 19 



7. Fathogram of the Chukchi Sea (Kotzebue Sound), Bering Strait, 

 and Norton Sound 20 



8. Bottom photograph taken in the Chukchi Sea 25 



9. Bottom photograph taken in the Bering Strait 25 



10. Glacon with surface laden with mud 35 



11. Glacon heavily laden with well-sorted pebbles 35 



12. Floeberg heavily laden with rafted detritus 35 



13. Bathythermograph and hydrographic stations used for vertical 

 sections 38 



14. Bathythermograms taken in. the southern Bering Sea 40 



15. Vertical temperature section A 41 



16. Vertical temperature section B 41 



17. Horizontal distribution of temperature, at the surface 42 



18. Horizontal distribution of temperature, at 25 meters 43 



19. Horizontal distribution of temperature, at 40 meters 43 



20. Horizontal distribution of salinity, at the surface 44 



21. Horizontal distribution of salinity, at 25 meters 45 



22. Horizontal distribution of salinity, at 40 meters 45 



23. Vertical temperature section C 46 



24. Vertical salinity section C 46 



25. Bathythermograms and salinity traces taken in the Bering Sea 

 between Pribilof Islands and Bering Strait 49 



26. Temperature-salinity diagrams from stations in the Bering Sea 49 



27. Vertical temperature section D 49 



28. Vertical salinity section D 50 



29. Bathythermograms and salinity traces taken across eastern side 



of Bering Strait 51 



30. Temperature-salinity diagrams from stations across eastern side 



of Bering Strait 51 



31. Vertical temperature section E 53 



32. Vertical salinity section E 53 



33. Bathythermograms taken in the ice pack region 54 



34. Bathythermograms and salinity traces taken in the central 

 Chukchi Sea 55 



35. Bathythermograms and salinity traces taken in the eastern 

 Chukchi Sea 55 



36. Temperature-salinity diagrams from stations in the central 

 Chukchi Sea 57 



37. Temperature-salinity diagrams from stations in the northern 

 Chukchi Sea 57 



38. Temperature-salinity diagrams from stations in Kotzebue and 

 Norton Sounds 59 



39. Bathythermograms and salinity traces taken in Kotzebue and 

 Norton Sounds 59 



40. Continuous water temperature between Bering Strait and the 

 ice pack 60 



41. Continuous water temperature between the ice pack and Aleu- 

 tian Islands 60 



42. Fluctuations in vertical temperature structure in brash ice re- 

 gion (24 hours) 69 



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