CONTENTS (Cont) 



Physical Factors ... 56 



Sound Attenuation (Bubbles) ... 56 

 Sound Velocity ... 58 

 Sound Transmission ... 60 



Electromagnetic Wage Propagation Studies ... 65 



VLF Transmission ... 66 



Chemical Studies ... 69 



Salinity and Oxygen ... 70 

 Plant Nutrients ... 72 

 Foaming Properties ... 74 

 Radioactivity ... 76 



Biological Studies ... 79 



Water Turbidity ... 80 

 Plankton Distribution ... 82 

 Fish Distribution ... 84 



Geological Studies ... 87 



Sea- Floor Topography and Sediment Distribution ... 8 

 Subbottom Structure ... 90 

 Mine Scour ... 92 



Materials Research Studies ... 95 



Studies with the Diving Saucer ... 99 



Service to Other Organizations . . . 103 



PART HI. TOWER DESIGN, CONSTRUCTION, INSTALLATION, 



AND FACILITIES ... 107 

 Conception, Design, and Site Criteria ... 108 



Construction and Installation ... 110 



Facilities • • • 112 



Lower Catwalk (Level 1) • • • 112 

 Upper Catwalk (Level 2) ... 114 

 Main Deck (Level 3) ... 116 



Exterior . . .116 



North Room ... 118 



Central Room ... 120 



