hydrographic phenomena associated with this interface 

 between deep and bottom water masses. 



Leg 6 was completed January 29, 1974. Leg 10, the final 

 leg, was completed June 10, 1974. Rapid shipboard analysis of 

 samples will make preliminary reports for Legs 7 through 10 

 available at early dates, including that for Leg 10 by the fall of 

 1974. 



180° ^„. 



Yadak 



- ▲ 218 



160° 



217 



216 



I 



▲ 215 



214 



213 



212 



30°— 



▲ LARGE-VOLUME STATIONS 

 A SMALL-VOLUME STATIONS 

 C SPECIAL STATIONS 



I 



A 211 



» \ 



■* ^OHONOLULU 



J r-> 20- 



Figure 3. — Track of RV Melville, Pacific 

 GEOSECS Leg 2. 



Water-Sample Library 



A large water-sample library was established at the Woods 

 Hole Oceanographic Institution at the beginning of the Atlantic 

 phase of GEOSECS. Water samples are distributed to shore- 

 based laboratories for measurements of the following: barium, 

 carbon-13, carbon-14, organic 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, major ions, particulate matter, and trace 

 elements. Atlantic water-sample analyses are in progress and 

 Pacific water samples are being distributed for analyses. When 

 chemical studies are complete, these analyses together with 

 shipboard analyses, for both the Atlantic and Pacific Oceans, 

 will be available through the National Oceanographic Data 

 Center. 



GEOSECS Bibliography 



Clarke, W. B., V/. J. Jenkins, and H. Craig. Helium Isotopes 

 in the South Atlantic: the Use of 'He as a Tracer, (Ab- 

 stract), EOS, Trans. Amer. Geophys. Union 55(4): 313, 

 1974. 



Jenkins, W. J., W. B. Clarke, and H. Craig. The Distribution 

 of 'He in the Northwest Atlantic Ocean, (Abstract), 

 EOS, Trans. Amer. Geophys. Union 55(4): 313, 1974. 



Kroopnick, P. C-Co Correlations in the Atmosphere and in 

 Oceanic Surface Water, (Abstract), EOS, Trans. Amer. 

 Geophys. Union 55(4): 34, 1974. 



Takahashi, T., M. Morrione, and A. E. Bainbridge. Alkalinity 

 Variations in the Deep Water of the Cape Basin, South 

 Atlantic Ocean, (Abstract), EOS, Trans. Amer. Geophys. 

 Union 55(4): 314, 1974. 



Pollution Research 



Pollutant Transfer Studies 



Pollutant transfer studies are designed to investigate 

 processes by which pollutants are transferred from land sources 



Figure 4.— Track of RV Melville, Pacific GEOSECS Leg 3. 



