GEOLOGICAL STUDIES 



Geological investigations from the tower utilize the under- 

 water TV system as well as scuba and hookah diving equipment for 

 in situ sea-floor observations and samplings. General topography, 

 microrelief, subsurface structure, sediment distribution, and 

 associated erosional and depositional process studies are carried 

 out in support of acoustic and bottom stability research. 



In addition to employment of scuba and hookah for in situ 

 work, the Cousteau diving saucer SP 300 has been used to provide 

 additional information on geological features seaward of the tower. 

 The subbottom was investigated with high-power acoustic reflection 

 equipment and by coring. 



Sea-floor topography 



Subbottom structures 



Mine scour 



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