From Figure 5, the parameters shown can be read for all selected spatial 

 points and at every time step used. In actual practice. Figure 5 should 

 be plotted on large rectangular graph paper so that the specific values 

 can be read more precisely. The one shown here is for illustration 

 purposes only. 



Resolution of the problem will be first considered from the stand- 

 point of computer applications, and then from the standpoint of manual 

 calculations . 



The input data in connection with computer program for the example 

 problem is shown in the Appendix on page 52. Every line of data repre- 

 sents an input card, and each card or set of cards is numbered at the 

 right for reference to the following explanation: 



CARD 1: This is a title card which is to be used for identification 

 of the problem, such as location, date, etc. 



CARD 2: The first number indicated as 62 on the card is the total 

 number of time steps used in computing the storm surge, or symbolically, 

 this is denoted as MM = 62. With reference to Figure 5, it is seen that 

 if 35 hours of computational time are taken, then based on the forward 

 speed of the storm of 22 knots, the distance required on the graph 

 for computational purposes is Vpt = 770 nautical miles. However, the 

 parameters must be known 62 nautical miles beyond this distance due to 

 the width of the shelf or a total distance of 832 nautical miles. If 31 

 hours are selected as computing time, it is seen that the parameters are 

 always defined, thus this time will be used in the computations. Further- 

 more, if computations are carried out in time steps of one-half hours, 

 then the required number of time increments is 62 . 



The second value is the number of shelf reaches (LM) . There are 18 

 positions on the traverse line for supplying raw data (see page 53 of 

 the Appendix), thus there are 17 increments along the line. 



The third value is an option of the manner in which data is to be 

 supplied. If IDATA = 1, all wind-stress, pressure, and astronomical- 

 tide data are supplied by card externally, otherwise the data are 

 generated internally. 



The fourth and fifth values, lOMIT and lOMITD, if equal to 1, omits 

 a detailed printout of output and input data, respectively; otherwise a 

 detailed printout is made. 



CARD 3. The set of cards shown here contains the values of the time 

 increments (DELT) . Here, they are taken identical for all MM. However, 

 the program is written so that any time increment can be taken for a 

 given time level . 



CARD 4: The cards in this set give the distances in nautical miles 



33 



