SURVEYING THE OCEANS (OCEANOGRAPHIC) 



49 



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Oceanographic operations in ice -infested waters. 



the Bureau of Commercial Fisheries will facilitate making such 

 information available to U. S. fishermen. 



The distribution of certain artificial radioisotopes, resulting 

 from nuclear events and deposited on the sea surface as fallout, 

 has been under study since early 1965. In addition, the analysis 

 of trace elements related to these radioisotopes is being carried 

 out to understand more fully the processes regulating the distri- 

 butions of these chemical constituents in the various ocean 

 reservoirs. 



As part of the overall program of chemical and radiochemical 

 investigations, the Navy, under a cooperative agreement with the 

 U. S. Atomic Energy Commission, acts as a consultant and tests 

 and evaluates systems utilizing radioisotopes in the marine 

 environment. Those systems that are presently under study are 

 the Deep Water Isotopic Current Analyzer (DWICA II), the 

 Nuclear Sediment Density Probe and an in situ oxygen analyzer. 



