In answer to your questions about NODC 



what data are available? 



PHYSICAL -CHEMICAL DATA 



Bathythermograph Data 



Enlarged reproductions of composited BT slide and grid show 

 temperature traces to a maximum of 900 feet. Related 

 meteorological and surface environmental data also given. 



Volume— about 800,000 prints from all oceans. 



Oceanographic Station Data 



These give values of water temperature, salinity, other water 

 chemistry (when available)— oxygen, pH, silicate, phosphate, 

 nitrite, nitrate, and alkalinity— at the observed depths. These 

 values, and specific volume anomaly and dynamic depth anomaly, 

 also given at all International Standard Depths (only oxygen for 

 other wafer chemistry). Surface environmental data also given. 



Volume— about 200,000 stations from all oceans. 



Surface Data 



Primarily data from the HI -9 (Current Report) and summaries 

 from some foreign and domestic marine decks. These contain 

 sea surface temperature, sea, swell, related meteorological data 

 and currents. These data are not processed by NODC at pres- 

 ent; however processed data from the former Hydrographic 

 Office collection are available. 



GEOLOGICAL -GEOPHYSICAL DATA 



Some published reports in this category currently available at 

 NODC. Practically any report can be obtained and reproduced 

 from sources in the Washington, D. C. area. Holding — recall 

 system for these data currently under development by NODC. 



