CONTENTS Page 



I. INTRODUCTION 1 



II . NARRATIVE OF OPERATIONS 1 



III . METHODS AND PROCEDURES 3 



A. Sampling Techniques 3 



1 . Oceanographic Samples 5 



2 . Geologic Samples 5 



3 . Current Observations 5 



B. Analytical Methods 5 



1. Salinity Determination 5 



2. Dissolved Oxygen Determination 5 



3. pH Determination 6 



4. Dissolved Inorganic Phosphate Determination 6 



5 . Turbidity Determination 6 



C. Disposition of Data 6 



D. Units of Measurement 6 



IV. OCEANOGRAPHY 7 



A. Laptev Sea 7 



1 . Temperature-Salinity Relationships 7 



a. Arctic Basin Surface Water 7 



b. Southern Laptev Water 12 



2 . Oceanographic Features 12 



a. The Lena River Fluvial Plume 13 



(1) Temperature Distribution 13 



(2) Salinity Distribution 15 



(3) River Effluent Distribution 15 



b. The Khatanga-Anabar Fluvial Plume 18 



(1) Temperature Distribution 18 



(2) Salinity Distribution 18 



c. High Salinity, Low Temperature Water Near the Lena 

 River Delta 19 



3. Dissolved Oxygen Distribution 20 



B. The East Siberian Sea 23 



1. Temperature-Salinity Relationships 23 



a. Siberian Coastal Water 31 



b. Arctic Basin Surface Water 32 



2. Dissolved Oxygen Distribution 32 



3. Anchor Station Data 36 



a. Nansen Casts 36 



b . Current Observations 39 



V, DISCUSSIONS AND CONCLUSIONS 40 



A. Interpretive Limitations AG 



B. The Laptev Sea A2 



C. The East Siberian Sea 43 



VI. BIBLIOGRAPHY 45 



