Leg 8. Cape Town, South Africa, to Dakar, Senegal 

 (fig. 8). In a change from the original cruise track, Leg 8 pro- 

 ceeded up the eastern side of the Atlantic basin. Fourteen 

 stations were occupied on this leg. J. L. Reid was chief scientist. 



Leg 9. Dakar, Senegal, to New York, New York (fig. 9). 

 The final leg of the Atlantic GEOSECS cruise was an east-west 

 run across the Atlantic from Dakar, Senegal, to New York. 

 Eight stations were occupied including a reoccupation of station 

 30 of Leg 3, and of the second GEOSECS interlaboratory cali- 

 bration station in the Sargasso Sea. T. Takahashi was chief 

 scientist. 



The Knorr cruise was completed in April 1973. The in-situ 

 measurement systems for depth, oxygen, salinity, temperature, 

 and turbidity functioned so well that all the preliminary cruise 

 data are already worked up. The shipboard measurements, in- 

 cluding argon, CaCO:, saturation, NO.., NO3, dissolved Oj, PO,, 

 and salinity are excellent. A large water library is established at 

 Woods Hole, and samples were distributed to many shore-based 

 labs for measurements of: barium, carbon-13, carbon-14, or- 

 ganic carbon, total CO, cesium- 137, deuterium, helium-3, 

 helium-4, neon, oxygen-18. plutonium-238, plutonium-239, 

 radium-226, radium-228, silicon-32, strontium-90, tritium, ma- 

 jor ions, particulate chemistry, and trace elements. 



Data for most GEOSECS legs are worked up on board the 

 research vessel to assure quality control of sampling and analyti- 

 cal techniques. With the assistance of an IBM 1800 computer, 

 the preliminary data are organized into informal data reports for 

 the use of GEOSECS investigators. Within 1 year or so, the data 

 contained in these reports will have been fully inspected and 



60°W 



1^ 



55 » 



50° 



45° 



40° 



T 



35° 



30° 



RECIFE 



25< 



5°S- 



10° — 



BRAZIL 



J 



/ 



/ 



■I 



/ 



./ 



•-OCBDO. 



./ 



« 



/ 



20° 



25' 



30° 



LARGE-VOLUME STATION 



35° 



1 



A 



• REGULAR STATION 



D STD STATION 



O SPECIAL STATION 



_J I I 



Figure 5.— GEOSECS. Leg 5 of track of RV 

 KNORR, November 4 to 28, 1972. 



will be available through the National Oceanographic Data 

 Center. 



GEOSECS Bibliography 



Bacon, M.P. and J. M. Edmond. Barium at GEOSECS III in 



the Southwest Pacific, Earth Planet. Sci. Lett. 16(1): 

 66-74, 1972. 



Bainbridge, A. E., R. E. Ackermann, and T. J. Digre. Ship- 

 board Analytical Equipment, (abstract). EOS, Trans. 

 Amer. Geophy. Union 54(4): 305, 1972. 



Bender, M., T. Snead, and L. H. Chan. Barium Intercalibration 

 at GEOSECS I and II, Earth Planet. Sci. Lett. 16(1): 

 81-83, 1972. 



Bernat, M., T. Church, and C. J. Allegre. Barium and Stron- 

 tium Concentrations in Pacific and Mediterranean Sea 

 Water Profiles by Direct Isotope Dilution Mass Spectrome- 

 try, Earth Planet. Sci. Lett. 16(1): 75-80, 1972. 



Brass, G., and K. K. Turekian. Strontium Distributions in Sea 

 Water Profiles from the GEOSECS I (Pacific) and 

 GEOSECS II (Atlantic) Test Stations, Earth Planet. Sci. 

 Lett. 16(1): 117-121, 1972. 



Brewer, P. G., D. W. Spencer, and D. E. Robertson. Trace 

 Element Profiles From the GEOSECS II Test Station in 

 the Sargasso Sea, Earth Planet. Sci. Lett. 16(1): 111-116, 

 1972. 



70°W 



60° 



T" 



50° 



40° 



BUENOS AIRES. 



ARGENTINA 



FALKLAND ISLANDS 



40° — 



50° 



Dian 



A LARGE-VOLUME STATION 

 • REGULAR STATION 

 D STD STATION 

 O SPECIAL STATION 



I I 60'S 



Figure 6.— GEOSECS. Leg 6 or track of RV 

 KNORR, December 2 to 22, 1972. 



524-802 O - 73 



