seven 2-month cruise periods. During each cruise period 

 one or more ships were operating in the study area. 



On completion ot the field work the data seemed too 

 numerous for a classical data report. Instead, it was de- 

 cided to produce an 1 1-volume atlas of the results, with 5 

 volumes containing physical oceanographic and 

 meteorological data from the principal participating 

 ships, 5 volumes containing biological and nutrient 

 chemistry data from the same ships, and 1 volume con- 

 taining all data from Latin American cooperating ships 

 and ships of opportunity. 



Extensive use was made of a computer and automatic 

 plotter in preparation of the atlas charts. Methods used to 

 collect and process the data upon which the atlas is based 

 are described in detail by the contributors of the following 

 categories of charts: temperature, salinity, and derived 

 quantities; thickness of the upper mixed layer; dissolved 

 oxygen; meteorology; nutrient chemistry; phytoplankton 

 standing stocks and production; zooplankton and fish 

 larvae; micronekton; birds, fish schools, and marine 

 mammals. 



Another computer program was developed to provide 

 for the EASTROPAC Atlas representative vertical sections 

 of temperatures and salinities extracted from the final 

 STD tapes. Details of computer methods employed to 

 analyze and contour STD data are presented, and they are 

 followed by an outline of computer requirements and 

 program limitations. 



The STD provided many detailed profiles along cruise 

 tracks in the eastern tropical Pacific with an accuracy 

 approaching those taken by Nansen casts; but it created 

 new problems in processing oceanographic data. The 

 problems, their solutions and recommendations are pre- 

 sented for those who may benefit from many months of 

 processing STD data from EASTROPAC cruises. 



366. Key to field identification of anadromous 

 juvenile salmonids in the Pacific Northwest, by 

 Robert J. McConnell and George R. Snyder. 

 January 1972, iv + 6 pp., 3 figs. Price 20 cents, 

 stock number 0320-0021. 



331-356. Issued before 1972. 

 357-360. Not issued. 



361. Issued in 1971. 



NOAA Technical Report NMFS CIRC 



362. Issued in 1971. 



363. Not issued. 



364. Issued in 1971. 



365. Processing EASTROPAC STD data and the 

 construction of vertical temperature and salinity 

 sections by computer, by Forrest R. Miller and 

 Kenneth A. Bliss. February 1972, iv + 17 pp., 7 

 figs., 3 app. figs. Price 30 cents. 



ABSTRACT 



During the EASTROPAC expeditions the STD (salinity- 

 temperature-depth recorder) was established as the 

 principal instrument for obtaining detailed profiles of 

 temperature and salinity to depths exceeding 1,000 m. 

 The STD system recorded data in digital form on mag- 

 netic tape and required computer processing to provide 

 accurate temperatures and salinities at 1-m intervals for 

 each hydrographic station. 



Procedures for processing STD data from pre- 

 processed digital logger tapes are described. Also in- 

 cluded is a discussion of processing temperatures and 

 salinities from the STD analog charts or from Nansen cast 

 data when the digital data logger was not operative. Es- 

 sential calibration of STD data from Nansen cast data is 

 outlined. Finally, a computer program which prepares a 

 final, annotated STD tape, with corrected temperatures 

 and salinities, is described in great detail. 



ABSTRACT 



A key is presented with descriptive illustrations to help 



in field identification of live, juvenile salmonids in fresh 



waters of the Pacific Northwest. Other juvenile fish that 



may be mistakenly identified as salmonids are included. 



367. Engineering economic model for fish protein 

 concentration processes, by K.K. Almenas, L.C. 

 Durilla, R.C. Ernst, J.W. Gentry, M.B. Hale, 

 and J.M. Marchello. October 1972, iii+ 175 pp., 

 6 figs., 6 tables, 1 app. Price $1.50. 



ABSTRACT 



A process engineering economic model for fish protein 

 concentration processes has been developed. The model 

 predicts the construction and operating costs for fish 

 meal plants and for plants producing fish protein concen- 

 trate (FPC) by: isopropyl alcohol extraction, biological, 

 and press cake-isopropyl alcohol extraction. 



Typical process flow sheets and a computer program 

 were developed to be used in the design and cost compu- 

 tations. The model provides for each process to be 

 studied both internally and externally in comparison with 

 alternate processes. The program and model were pre- 

 pared in such a way that changes and updating may be 

 accomplished quite readily as new information becomes 

 available. This report contains directions for users and 

 descriptions of the processes. A listing of the computer 

 program and example calculations for each process are 

 presented in the Appendix to guide the user and to illus- 

 trate the nature of the model output. 



While the model does develop construction, operating, 

 and production aspects of the processes, it does not deal 

 with the economics of selling the products and the result- 

 ing profit and return on investment. Problems of allo- 

 cation of costs and marketing arrangements are not 

 covered in this report, but must be considered in the final 

 decisions relating to a complete evaluation of alterna- 

 tives. 



