salinity, and dissolved oxygen. Particulate matter will be collected at all 

 depths, and dissolved gases will be extracted from the sea water for on- 

 board analysis by gas chromatography. Much of the analytical work will 

 be done directly on the ships during the expedition. The remaining work 

 on the water samples will be done in the laboratories of participating geo- 

 chemists throughout the United States. A library of water samples 

 will be maintained for future work. A complete list of the properties 

 to be measured is given in the Table. 



Shipboard Laboratory Analyses 



The success of the project will depend upon the precise and rapid 

 measurement of several ocean variables aboard ship. For this reason 

 automated analysis systems are being developed for many of the routine 

 chemical measurements. All physical and chemical measurements made 

 at sea will be fed into the shipboard computer. Data will be logged 

 from principal and auxiliary sources and brought together in a real-time 

 system to compute final values of all parameters. A large proportion of 

 these data will be available for evaluation by the Chief Scientist before 

 moving off station. A view of the computer console (under develop- 

 ment) is shown in Figure 8. 



18 



Figure 8. GEOSECS shipboard data-acquisition system. 



