The Gulf-wide oscillation is still excited in the absence of 

 wind stresses in the deep water. The time sequence of the 7?q 

 response obtained from the simulation of HirR5(L) is shown in Fig. 

 109. The maximum peak of this signal is 0.2 m and the average period 

 is 28 h. Magnitudes of r}Q obtained from the simulations of HUR5 and 

 HUR5(L) differ by a factor of 2. Neglecting the deep-water wind 

 driven flow produces a dramatic drop of the total transport through 

 the ports for HUR5(L) as compared to HUR5 (not shown). The volume 

 transport through both Florida and Yucatan Straits obtained from 

 HUR5(L) is caused by the tilting of the water surface toward storm 

 center due to the atmospheric pressure. 



Simulation of HUR23(L) yields an tjq response (Fig. 110) that is 

 almost identical to that obtained from HirR23. Comparison of the time 

 histories of the volume transports obtained from the two runs (not 

 shown) reveals that the net periodic volume transports are about the 

 same (6.6 x 10 nr/s) at their first maxima. Figure 111 shows the 

 gulf wide oscillation obtained from hurricane Carla(L) simulation 

 which is again comparable to that obtained from the original 

 hurricane Car la result. The initial positions of HUR5 and hurricane 

 Carla appear to be a key factor in the almost duplicate tjq responses 

 generated by the limited area model and the complete model. Both 

 storms are initially located closer and more directly to the south of 

 Yucatan Strait as compared to HUR5. The stronger atmospheric 

 pressure gradient through Yucatan channel is apparently more 

 effective in drawing water through this opening. 



181 



