Figure 6 



80M 



Short-term measurements of current velocity at four depths 

 on Ammen Rock Pinnacle. Note that current velocity is 

 approximately two-fold higher at the top (30 m) than on the 

 deep flanks (80 m) of the pinnacle. 



The InterOcean S4 electromagnetic current meters were 

 programmed to take readings every half second from one 

 minute duration at five minute intervals. Velocity was 

 measured at 4 cm above the bottom. 



62 



