Figure Page 



6. Monthly average deptlis (m) of selected isohalines (Voo ) versus time at 

 Ocean Station ECHO, September 1966 - April 1973 15 



7. Plot of the 1st standard deviation of monthly average temperature 

 fC) and sahnity ( %o ) versus depth (m) at Ocean Station ECHO, 



June 1971 17 



8. T-S diagram for all observed values at Ocean Station ECHO during 



July, September, November 1971 and January 1972 18 



LIST OF TABLES 



1. Summary of oceanograpliic operations at Ocean Station ECHO, January 



1963 - June 1973 2 



APPENDICES 



A. Data Listings for Cruises E-21 throu^ E-87 19 



VI 



