PHOCESSING PROCEDURES 



DYNAMIC CALCULATIONS 



23 



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Figure 24.— Form 3 with example for "DYNAMIC CALCULATIONS.' 



Normally, values at standard depths are used 

 to simplify the computation. These are found 

 by plotting the observed values of temperature 

 and salinity at observed depths, drawing a 

 smooth curve, and reading the interpolated 

 values at standard depths as shown in section 

 D. 2. 



Explanations of Entries in Columns 



DEPTH (meters) : Standard depths, at which values of 

 all other quantities are desired. (See sec. D. 2.) 



TEMPERATURE (°C.): Temperature at each standard 

 depth. 



SALINITY (°/oo) : Salinity at each standard depth. 



APPROXIMATE 10' A,,, AND DIFFERENCES: The quantity 

 A,_( is temperature-salinity term of the specific vol- 

 ume anomaly, i. To streamline the calculation 

 when much data are to be processed, approximate 

 values are read from a simplified table, V-A, page 

 41, and entered without interpolation; then in- 

 terpolation corrections for temperature, table V-B, 

 page 76, and salinity, table V-C, page 77, are found 

 separately and added. If only the integral part of 



the salinity reading (in °/oo) and temperature to 

 tenths of a degree centigrade are used, three num- 

 bers are found in table V-A, page 41. The first is 

 entered in the column "APPROXIMATE lO'A..,." 

 The second and third numbers are entered one 

 above the other in the column "DIFFERENCES." 

 The upper number of these two is the difference be- 

 tween values of 10^ A,,( for a temperature increase of 

 one-tenth of a degree centigrade. The lower num- 

 ber is the difference between values of 10*A,.( for a 

 salinity increase of one part per thousand. 



CORRECTIONS — TEMPERATURE and SALINITY: Tempera- 

 ture corrections are found from table V-B, page 

 76, by using the hundredths place of the tem- 

 perature reading and the upper number under 

 "DIFFERENCES." SaUnity corrections are found 

 from table V-C, page 77, by using the decimal part 

 of the salinity reading and the lower number under 

 "DIFFERENCES." 



lO'A,,,: Entries in this column are found by adding 

 the three terms "APPROXIMATE lOM.,,," "TEM- 

 PERATURE CORRECTION," and "SALINITY 

 CORRECTION." 



