page 



THE VIBRATORY ANCHOR SYSTEM 31 



Background 33 



Description 32 



Appurtenant Instruments 35 



General Test Program and Procedures 37 



Test Results 41 



Operation I - Long Beach Harbor, harbor soil ... 41 



Operation II - Santa Catalina Island, sand .... 41 



Operation III - Santa Catalina Channel, deep 



water 42 



Operation IV - Santa Barbara Channel, deep water . 42 



Operation V - San Clemente Island, sand 43 



Operation VI - Seneca Lake, clay 43 



Operation VII - Port Hueneme , sandy-silt 44 



Operation VIII - Pitas Point, clay-silt. ..... 44 



Optimization of Design 45 



Background 45 



Analytical Procedure 49 



SUMMARY AND CONCLUSIONS 57 



FUTURE WORK 59 



REFERENCES 60 



