CONTENTS XV 



cm. 23. Tides by W. Hansen 764 



1. Introduction ......... 764 



2. The hydrodjmamic equations and their apphcation to tidal 

 problems .......... 765 



3. Tidal observation . . . . . . . .768 



4. Tidal charts 773 



5. Classical theory ......... 779 



6. Numerical methods for ascertaining the tides and tidal currents. 

 Boundary-value problems ....... 781 



7. The application of difference methods to initial -boundary 

 problems .......... 786 



8. Numerical solutions of initial-boundary-value problems of tides 



in one and two dimensions . . . . . . .788 



9. Internal tides 799 



Section VI. Turbulence by K. F. Bowden .... 



1 . General properties of turbulence . 



2. Turbulence in the sea ..... 



3. Turbulent fluctuations and turbulent transports 



4. Vertical turbulence ..... 



5. Horizontal turbulence .... 



802 



802 

 808 

 810 

 814 



817 



Section VII. The Physics of Sea-Ice by E. B. Pounder 



1. Introduction ..... 



2. Mechanical properties 



3. Thermal properties .... 



4. Electrical properties .... 



5. Growth and disintegration of an ice cover 



6. Theory of sea-ice structure and properties 



826 



826 

 829 

 832 

 834 

 834 

 835 



Author Index 



Subject Index 



839 



850 



