PROCEDURES 

 The Method 



Since the data was temporally and spatially random it required the use of 

 special methods to analyze the data. The most direct method would be to group 

 together all the dynamic depth anomaly data for a particular month and then fit 

 this data by the method of least squares with a two-dimensional polynomial. 

 The virtue of this particular method is that it treats each data point as an 

 independent measure of the dynamic depth field. The latitude and longitude are 

 used as the independent variable because this is the most convenient form in 

 which to obtain the data from NODC. The north-south and east-west velocities 

 can now be obtained by solving the following equation: 



U = 10 > dD 



where 



f R sin © 



10 \ dD 



fR 



e© 



U = north-south velocity 



V = east-west velocity 



f - Coriolis Parameter 



R = Radius of the earth 



O = Lat i tude 



dD = Dynamic depth anomaly 



- Longitude 



CD 



