r 



R.R.S. Discovery 11 



1951—1965 



Age of 

 moon 

 (days) 



1951 

 1952 



1953 



1954 



1955 

 1956 



1957 



1958 

 1959 

 1960 

 1961 

 1962 

 1963 



1964 



1965 



27 



27 



17 



HYDROLOGICAL OBSERVATIONS 



Depth 

 (metres) 





Temp. 

 °C. 



24 



S --/c 



4-S 



o 



lO 

 20 



3° 

 4° 

 5° 

 6o 

 8o 



lOO 



15° 



200 

 300 

 400 

 600^ 



looo- 



795 



2-21 

 2-14 

 1-83 

 1-31 

 112 

 089 

 0-91 

 0-69 

 0-62 

 0-41 



0-35 

 0-75 

 024 

 009 

 039 

 0-35 



pH 



Mg. — atom nt.' 



Nitrite 



N, 



c.c. 

 litre 



8-08 



8-o8 

 8-09 

 8-04 

 8-03 

 8-02 

 8-02 

 8-00 

 7-98 

 7-98 

 7-97 

 7-97 

 7-97 

 8-06 

 8-07 

 8-OI 



BIOLOGICAL OBSERVATIONS 



Gear 



I -65 

 1-65 

 1-79 



1-88 

 2-03 



2-IS 



2-15 



2-15 

 2-22 

 2-34 

 2-36 



2-34 

 2-34 

 2-45 

 2-53 



2-55 



0-22 

 0-21 

 0-20 

 0-16 

 0-15 



o-is 



0-15 

 0-15 

 0-15 



0-I4 

 0-14 

 o-ii 

 o-ii 

 0-03 

 0-00 

 0-00 



Sh. CoU. 



DRR 



Sh. Coll. 

 Sh. CoU. 



DRR 



Sh. CoU. 



DRR 

 DLH 

 DRR 



DRR 

 DLH 



Sh. CoU. 



Sh. CoU. 



DRR 

 DLH 



Sh. CoU. 



Sh. CoU. 



Sh. CoU. 



7-07 

 7-02 

 6-86 

 6-65 



5-87 

 5-79 

 5-50 

 4-81 

 5-15 

 4-85 

 446 



4-43 



NHP 



NsoV 



N70 V 



N 100 H 

 N70B 



N 100 B 

 N70B 



N 100 B 



Depth 

 (metres) 



367-383 



440-4 1 O 



785-767 



785-810 



830 



830 

 740 



360 

 340 



50-0 



I 00-0 



1000-750 



750-500 



500-250 



250—100 



100-50 



50-0 



0-5 



I 17-0 



340-200 



TIME 



0600 



1252 



0640 



0935 

 1400 



1300 



1425 



0620 



1323 

 1355 



1302 



0710 

 1005 



■43° 



1330 

 1435 



Remarks 



1328 

 1420 



1809 



2136 

 2138 



2138 



1945 

 2156 



2158 

 2208 



KT 

 DGP 



155 



