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In this study, we determined the variations of tidal flow field and tidal prism caused by human activities in Tongzhou bay and using MIKE 21 hydrodynamic model as analyzing tool. After the human activities, the hydrodynamic in sea area alongshore engineering is changed, the most obvious changes can reach over 0.1m/s; the tidal discharge decreases c...
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... groups of sections were set to calculate the tidal discharge before and after construction(shown in figure 8), the numerical simulation formula is as follows: ,n is the number of grid in the section; u, v is velocity on x and y axis; h is the total water depth; lx , ly is the width of grid on x and y axis;t1,t2 is the start and end times of high and low tide cycles. It can be concluded from the result of the tidal discharge before and after the reclamation that has a tendency to decrease(shown in Table 1 and Table 2). It can be inferred that the decline of tidal discharge mainly caused by the shrinking sea area from the comparison between three sections, the N1,N2 shows a relatively large reduction while N3 remain nearly steady. ...