80 r- 



^ 60 



o 

 o 



40 



PERCENT OF TIME 

 SPEEDS GREATER THAN 20cm/s 



Open Slope 



Oceanographer 



Lydonia 



o 



a: 



20 



\ 



K 



-^-■^-^ H--' 



J 



1000 2000 



BOTTOM DEPTH (m) 



3000 



Figure 7. Percent current exceeds 20 cm/s. The percentage of time during 

 which the near-bottom currents exceed 20 cm/sec in Lydonia and Oceanographer 

 Canyon and over the adjacent slope. The currents are much stronger in these 

 two major canyons at water depths less than 500 m than at comparable depths on 

 the slope, suggesting a more erosional environment (adapted from Csanady et 

 al. 1988). 



18 



