An ultra-shallow water storm surge model with quadratically depth-varying eddy viscosity and its application to the numerical modelling of the Bohai Sea storm surges |
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Authors: | Wu Dexing Qin Zenghao |
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Institution: | (1) Shandong College of Oceanology, Shandong, China |
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Abstract: | Based on the ultra-shallow water storm surge theory proposed by Qin and Feng1] (1975), an ultra-shallow water storm surge model, taking into consideration the effect of the earth's rotation and the quadratically
depth-varying eddy viscosity, is developed. Using the model wind stress fields as a guide for representing the effect of wind
stress forcing in our model, a numerical investigation of the Bohai Sea wind surge is made. As a better means for solving
the mathematical model, the Galerkin finite element technique is employed in numerical solutions. Under the control of the
main weather situation, namely, the cold wave combined with the extratropical cyclone, two storm surge processes experienced
on the Bohai Sea are simulated numerically. It is found that the experimental results, in the main, are in agreement with
the observations. |
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Keywords: | |
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