20 40 60 80 100 



DISTANCE OFFSHORE (km) 



39°l I i' I 



J L L 



J I L 



75° 74° 73° 72° 



FIGURE 4-7B. — Nitrate concentrations during May 1976. XWCC cruise 9 transect II (A) and bottom (B) nitrate in [xg-at/l (May 17-24. 1976). 



103 



