R.R.S. Discovery U 



746—748 



Station 



746 



747 



748 



Age of 

 moon 

 (days) 



19 



Depth 

 (metres) 



HYDRO LOGICAL OBSERVATIONS 



O 

 lO 

 20 



30 

 40 

 50 

 60 

 80 

 100 



ISO 



200 



300 



400 



590 



790 



990 



1480 



1980 



2470 



2960 



3460 



3950 



4450 



4940 



o 

 10 

 20 



30 

 40 

 50 

 60 

 80 



100 



150 



200 

 290 



390 



s8o 

 770 

 970 

 1450 

 1930 

 2420 

 2900 

 3380 



o 

 10 

 20 



30 

 40 



50 



60 



80 



100 



150 



190 



290 



380 



580 



770 



960 



1440 



1930 



2410 



2964 



Temp. 

 "C. 



3382 



2408 



3-41 

 2-71 

 2-71 

 2-70 

 2-70 

 260 

 2-51 



2-39 



2-20 

 1-91 

 1-53 



1-35 

 1-71 



2-51 

 2-49 

 2-39 



2-o8 



1-82 

 1-48 



I-Ol 



0-88 



0-S9 

 0-30 

 0-27 



4-70 

 468 

 4-63 

 4-48 

 4-41 

 4-40 



4-35 

 4-24 

 4-20 

 4-09 

 4-02 

 3-8o 



3-45 

 2-65 

 2-28 

 2-40 

 2-41 

 2-07 

 1-86 

 I-S6 

 I-I7 



4-38 

 4-37 

 4-35 

 4-31 

 4-03 

 391 

 379 

 3-71 

 3-6s 

 3-44 

 3-31 

 2-71 

 2-82 

 2-68 

 2-70 

 2-56 

 220 

 1-99 

 1-88 



34-11 

 34-°5 

 34-05 

 34-05 

 34-05 

 34-05 

 34-05 

 34-05 

 34-05 

 34-05 

 34-03 

 34-07 

 34-16 

 34-37 

 34-51 

 34-55 

 34-70 

 34-72 

 34-72 

 34-71 

 34-70 

 34-70 

 34-68 

 34-67 



34-21 

 34-21 

 34-21 

 34-19 

 34-19 

 34-19 

 34-19 

 34-20 

 34-20 

 34-20 

 34-20 

 34-19 

 34-i8 

 34-15 

 34-21 



34-35 

 34-58 

 34-66 



34-74 

 34-75 

 34-74 



34-14 

 34-14 

 34-15 

 34-15 

 34-15 

 34-15 

 34-15 

 34-15 

 34-14 

 34-14 

 34-14 

 34-14 

 34-21 

 34-29 

 34-41 

 34-49 

 34-66 



34-67 

 34-70 



27-16 

 27-17 

 27-17 

 27-18 

 27-18 

 27-18 

 27-19 

 27-20 

 27-22 

 27-24 

 27-26 

 27-30 

 27-34 

 27-45 

 27-56 

 27-61 



27-75 

 27-78 

 27-81 

 27-84 

 27-84 

 27-86 



27-85 

 27-85 



27-11 

 27-11 

 27-11 

 27-12 

 27-13 

 27-13 



27-13 

 27-14 

 27-15 

 27-16 

 27-17 

 27-19 

 27-22 

 27-27 

 27-34 

 27-45 

 27-63 

 27-71 

 27-80 

 27-83 

 27-85 



27-09 

 27-09 

 27-10 

 27-11 

 27-14 



27-15 

 27-16 

 27-17 

 27-17 

 27-19 

 27-20 

 27-25 

 27-29 



27-37 

 27-46 



27-53 

 27-70 



27-73 

 27-77 



pH 



8-14 



8-iS 

 8-15 

 8-15 

 8-14 



8-15 

 8-15 

 8-15 

 8-13 

 8-12 

 8-12 

 8-09 

 8-06 

 8-05 

 8-os 

 8-02 

 8-07 

 8-15 

 8-31 

 8-23 

 8-i6 



8-15 

 8-20 

 8-25 



8-15 

 8-15 

 8-15 

 8-15 

 8-16 

 8-16 

 8-iS 

 8-15 

 8-15 

 8-IS 

 8-14 



8-15 

 8-14 



8-31 

 8-25 

 8-16 

 8-17 

 8-17 

 8-18 

 8-18 

 8-29 



8-16 

 8-16 

 8-16 

 8-16 

 8-16 

 8-17 

 8-16 

 8-16 

 8-16 

 8-14 



8-13 

 8-09 

 8-os 

 8-14 

 8-13 

 8-09 

 8-09 



8-15 

 8-2S 



Mg. — atom m.' 



Nitrate 



+ 

 Nitrite 



N. 



Nitrite 



Nj 



c.c. 

 litre 



7-00 

 7-07 

 7-00 



6-93 

 7-01 



6-88 

 7-01 

 6-68 

 5-93 

 4-37 

 3-79 

 3-64 

 3-69 

 3-68 

 3-84 

 3-93 

 4-25 

 4-34 

 4-48 

 4-41 



6-63 



6-62 



6-63 



6-61 



6-57 

 6-59 

 6-55 

 6-46 

 6-23 

 5-84 

 5-11 

 4-33 

 3-45 

 3-45 

 3-66 



3-89 

 3-74 



6-75 



6-75 



6-82 



6-78 



6-62 

 6-62 

 6-27 

 6-2S 

 5-63 

 4-75 

 4-05 

 3-74 

 3-63 

 3-71 

 3-78 



BIOLOGICAL OBSERVATIONS 



Gear 



N 50 V 

 N70B 

 N 100 B 

 N70B 

 N 100 B 



N50 V 

 N70B 

 N 100 B 

 N70B 

 N 100 B 



N50V 

 N70B 

 N 100 B 

 N70B 

 N 100 B 



Depth 

 (metres) 



306-124 



I2S-0 



I 282-148 

 I 155-0 



204-138 



W 



80-0 



TIME 



2010 

 0034 



0I2I 



0935 

 III7 



2II2 

 2231 



2315 



To 



2020 

 0104 



OI4I 



0941 



H47 

 1220 



2118 

 2300 



2335 



Remarks 



DGP 

 KT 



+ 4 hours 

 DGP 



KT 



DGP 

 KT 



25 



