SUBROUTINE COEFFS 



Compute coastline arclength 



Yes 



Arclength computed directly 

 from given coordinates, 

 CX2 , Y2) . 



Consequently, assumed that 

 used has sufficient data 

 points to accurately define 

 the curve. 

 Stored in ARCYB 



. CALL CURIYB 

 Arclength computed from a spline 

 fitted through Y2 as a function 

 of X2 with 9 additional points 

 between the given coordinates to 

 further resolve the curve. 

 Stored in ARCYB. 



CALL CUR2YB 

 Fit a spline through X2 



as a function of ARCYB 



CALL CUR3YB 

 Fit a spline through Y2 as a function of ARCBY 



Compute seaward boundary arclength; the same 

 procedure as for the coastline is followed. 



