CONTENTS 



Page 



Introduction 1 



Environment and catch 2 



Acknowledgments 2 



Literature cited 3 



FIGURES 



Page 



Figure 1 .--Distribution of temperature at 10 m., July 1961. Contour interval is 0.5° C. 



except where shaded 4 



Figure 2.-- Distribution of temperature at 10 m., July 1962. Contour interval is 0.5° C. 



except where shaded 5 



Figure 3. --Distribution of temperature at 10 m., July 1963. Contour interval is 0.5° C. 



except where shaded 6 



Figure 4. --Distribution of temperature at 10 m., July 1964. Contour interval is 0.5 C. 



except where shaded 7 



Figure 5.- - Distribution of salinity at 10 m., July 1961. Contour interval is 0.5 p.p.t. ex- 

 cept where shaded 8 



Figure 6. --Distribution of salinity at 1 m., July 1962. Contour interval is 0.5 p.p.t. except 



where shaded » • 



Figure 7. --Distribution of salinity at 10 m., July 1963. Contour interval is 0.5 p.p.t. ... 10 



Figure 8.- -Distribution of salinity at 10 m., July 1964. Contour interval is 0.5 p.p.t. ... 11 



Figure 9. --Horizontal distribution of density at 10 m., July 1961. Contour interval is 



0.5 a, unit 12 



Figure 10. --Horizontal distribution of density at 10 m., July 1962. Contour interval is 



0.5 cj t unit 13 



Figure 1 1.- -Horizontal distribution of density at 10 m., July 1963. Contour interval is 



0.5 at unit 14 



Figure 12. --Horizontal distribution of density at 10 m., July 1964. Contour interval is 



0.5 a t unit except where shaded 15 



Figure 13. --Horizontal distribution of oxygen concentration at 10 m., July 1961. Contour 



interval is 0.2 ml./l. except where shaded 16 



Figure 14. --Horizontal distribution of oxygen concentration at 10 m., July 1962. Contour 



interval is 0.2 ml./l 17 



Figure 15. --Horizontal distribution of oxygen concentration at 10 m., July 1963. Contour 



interval is 0.2 ml./l. except where shaded '° 



Figure 16. --Horizontal distribution of oxygen concentration at 10 m., July 1964. Contour 



interval is 0.2 ml./l. except where shaded '' 



Figure 17. --Horizontal distribution of temperature at 100 m., July 1961. Contour interval 



is 0.2 5° C. except where shaded 20 



Figure 18. --Horizontal distribution of temperature at 100 m., July 1962. Contour interval 



is 0.25° C 21 



Figure 19. --Horizontal distribution of temperature at 100 m., July 1963. Contour interval 



is 0.25° C ZZ 



Figure 20. --Horizontal distribution of temperature at 100 m., July 1964. Contour interval 



is 0.25° C 23 



Figure 21 .--Horizontal distribution of salinity at 100 m., July 1961. Contour interval is 



0.2 p.p.t 24 



Figure 22. --Horizontal distribution of salinity at 100 m., July 1962. Contour interval is 



0.2 p.p.t 25 



Figure 23. --Horizontal distribution of salinity at 100 m., July 1963. Contour interval is 



0.2 p.p.t 26 



Figure 24. --Horizontal distribution of salinity at 100 m., July 1964. Contour interval is 



0.2 p.p.t 27 



Figure 25. --Horizontal distribution of density at 100 m., July 1961. Contour interval is 



0.25 a t unit 28 



iii 



