Abstract
Coastal vegetation is capable of decreasing wave run-up. However, because of regrowth, decay or man-made damage, coastal vegetation is always distributed in patches, and its internal distribution is often non-uniform. This study investigates the effects of patchy vegetation on solitary wave run-up by using a numerical simulation. A numerical model based on fully nonlinear Boussinesq equations is established to simulate the wave propagation on a slope with patchy vegetation. By using the model, the process of solitary wave run-up attenuation due to patchy vegetation is numerically analysed. The numerical results reveal that patchy vegetation can considerably attenuate the wave run-up in an effective manner. In addition, high-density patched vegetation can attenuate the solitary wave run-up more effectively than low-density patched vegetation can. For the same density, patchy vegetation with a uniform distribution has a better attenuation effect on wave run-up compared to that of patchy vegetation with a non-uniform distribution.
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Foundation item: The National Natural Science Foundation of China under contract Nos 51579036 and 51779039; the Fundamental Research Funds for the Central Universities of China under contract No. DUT19LAB13.
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Zhao, C., Zhang, Y., Tang, J. et al. Numerical investigation of solitary wave run-up attenuation by patchy vegetation. Acta Oceanol. Sin. 39, 105–114 (2020). https://doi.org/10.1007/s13131-020-1572-6
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DOI: https://doi.org/10.1007/s13131-020-1572-6