Figure 2. — STD station No. 205 temperature- 

 density trace showing triple in-situ tempera- 

 ture minimum. 



stations were occupied and, in addition, several shallow 

 radon profiles were obtained. 



Leg 3. Adak to Tokyo, Japan (fig. 4). Six stations were 

 occupied. High winds and rough seas made it necessary 

 to eliminate some scheduled casts and to relocate some 

 stations. 



Leg 4. Tokyo to Honolulu (fig. 5). Ten stations were 

 occupied (five large-volume, two small-volume, and three 

 STD-bottle sampling rosettes). Weather and mechanic 

 malfunctions curtailed some of the planned sampling. 



Leg 5. Honolulu to Pago Pago, Tutuila Island (Ameri- 

 can Samoa) (fig. 6). Twenty stations were occupied — 

 four large-volume, a special station on the Equator with 

 large-volume sampling in the upper 1.5 km, six small- 

 volume, and nine "mini" volume (single lowering of 

 double rosette samplers plus STD). 



Leg 6. Pago Pago to Wellington, New Zealand (fig. 7). 

 Twenty four stations were occupied. Most objectives were 

 accomplished. Much scientific interest focused on the 

 topology of the Benthic Front and the geochemical and 



Table 1. — U.S. institutions, investigators, and projects in GEOSECS program 



Organization 



Investigator 



Project title 



Atomic Energy Commission 



University of California, 



Scripps Institution of Oceanography 



Columbia University, 



Lamont-Doherty Geological Observatory 



University of Hawaii 



Louisiana State University 



Massachusetts Institute of Technology 



University of Miami, Rosenstiel School 

 of Marine and Atmospheric Science 



Oregon State University 



Queens College, 



The City University of New York 



University of Southern California 



University of Washington 



Woods Hole Oceanographic Institution 



Yale University 



U.S. Naval Oceanographic Office 



H. L. Volchok 



A. E. Bainbridge 

 H. Craig 



W. S. Broecker 



H. Feely 



P. E. Biscaye 



P. Kroopnick 



L. H. Chan 

 J. S. Hanor 



J. M. Edmond 



H. G. Ostlund 



P. K. Park 

 L. I. Gordon 



T. Takahashi 



T, L. Ku 



M. Stuiver 



D. W. Spencer 

 P. G. Brewer 



D. W. Spencer 

 J. M. Hunt 



K. Turekian 



W. S. Moore 



Fallout Radionuclides in Oceanic Water Columns 



Operations Group 



SIO Shipboard and Laboratory Measurements 



Analyses of GEOSECS Atlantic and Pacific Samples, 

 Ra"', Ra''-, Suspended Particulates (Mineralogy and 

 Chemistry) 



Isotopic Measurements (C'VC'% O'VO", D/H) in 

 Dissolved Inorganic Carbon, Dissolved Oxygen, Atmos- 

 pheric Water Vapor, and Atmospheric CO^ 



Barium Analysis in Ocean Waters 



High-Precision Barium Measurements 

 Radiocarbon and Tritium Measurements 



Nutrient Analysis and Measurements of Organic Carbon 

 and Surface pH 



Carbonate Chemistry of Seawater 



Radium Analysis 



C'^ Ocean Water Analysis 



Particulates and Trace Elements 



Administrative and Logistic Activities 



Strontium Analysis 



Measurement of Ra''° in Sea Water 



