(8) Card Group 8 



DTDET Values of the dimension less scale factor v 

 transforming n to T* are read with one 

 value per card for j-l,2..JM (format 2X,E14.7) 



(9) Card Group 9 



HOBSl The values of the observed hourly water level 

 in feet at grid location (IHl, JHl) are read 

 with 19 values per card in format F4.1. 



(10) Card Groups 10 through 14 



(11) 



HOBXk 



Card Group 15 

 XX, YY 



The values of the observed hourly water level 

 in feet at grid location (IHk^, JHy are read 

 sequentially with the same format as above. 



The paired x,y coordinates (units in x,y 

 space) of the computational grid points are 

 read along each column, 1-1, 2.. IM, with a 

 nested do-loop for j=l,2..JM (format 10F7.2). 



(12) Card Group 16 



COSG, SING The paired values of the cosine B and sine 

 where 8 is the angle between the E, and x 

 axis are read along each column, i=l,2..IM, with 

 a nested do-loop for j=l,2..JM (format 10F8.5). 



A computer printout of the sample program and data cards are given 

 later in this section. 



5. Mathematical Procedures and Program Limitations. 



The storm surge equations, solutions, and algorithms are described 

 in the text of Volume I of this report. 



Basically, the model utilizes a centered difference, leapfrog 

 analog of the vertically integrated, quasi-linear form 

 of the long-'i/ave equations. The algorithm treats the time 

 dependency explicitly and employs a computing lattice in which 



the transports, Q„^ and Q 



are computed at the same location 



but are staggered in time and space with respect to the water 



38 



