is the same at both ports, Yucatan channel is much deeper than the 

 Florida port so that the computed surface gradient is smaller. There 

 is no hydrograph on the east coast of Yucatan for comparison in this 

 case. 



6. Results from related simulations 



a) Variation of pressure drop 



All the synthetic storms employed a constant pressure drop of 80 

 mb. As a sensitivity test of the model, simulations of HUR5 with a 

 40 mb (HUR5W) and a 120 mb (HUR5S) pressure drop were made. Maximum 

 surges of 3.59 m and 9.35 m were generated in the simulations of 

 HUR5W and HUR5S, respectively. Figure 100 displays the maximum surge 

 as a function of pressure drop obtained from all simulations of HUR5. 

 This result is consistent with Jelesnianski ' s (1972) inference that 

 the peak surge is almost a linear function of the pressure drop. 



Plots of TjQ obtained from the HUR5W and HUR5S simulations are 

 shown in Figs. 101 and 102, respectively. The maximum peak and the 

 period of this oscillation are 0.2 m and 27 h for the weak storm and 

 0.6 m and 27 h for the intense storm. 



Note that the HUR5W simulation yields a larger magnitude of tjq 

 compared with HUR25 despite its smaller pressure drop. This implies 

 that a major factor governing the magnitude of the tjq from these 

 simulations is the differential wind-driven volume transport through 

 Florida port and Yucatan Strait. 



167 



