- 45 - 



Biological Data 

 Zooplankton: N-C N, o to 284 m, 0739-0812 GCT, 87 ml T, 87 ml S; H at m, 0752-0824 GCT, 242 ml T, 242 ml S. 

 Nekton: o, depth missing, 0628-0732 GCT, 292 ml T. 

 Night-lighting operations. 



STATION 47 

 (regular forenoon) 



May 12, 1958; 1711 GCT; 8°01. 5'N, 91°32'W; 2265 fm; wind, 250°, force 1; temp. , 

 weather, partly cloudy; sea, moderate; wire angle, 12°; time zone 6. 



87.2°F dry, 81.0°F wet; 



Submarine Daylight: 



Incident solar radiation: daily T 533 gm-cal/cm , day L 12. 38 hr. 



Biological Data 



3 



Phytoplankton: depth (m) of chlorophyll a (mg/m ), 1, 0. 19; 10, 0. 16; 20, 0.19; 40, 0.28; 60, 0.83; 100, 0.17. 



Water column chlorophyll a.: 43 mg/m . Phytoplanlrton haul taken. 



Zooplankton: N-C N, o to 299 m, 1826-1859 GCT, 106 ml T, 106 ml S; H at m, 1832-1903 GCT, 16 ml T, 16 ml S. 



a) Duplicate values: 53 m, 1.28; 89 m, 2.20; 372 m, 2.89; 502 m, 3.38; 1107 m, 3.19 \ig at/L. 



