Harbour operability may be hampered by climate change. Green solutions can be used to provide extra flexibility with respect to present grey infrastructure to adapt to, and mitigate, such functional disruptions with affordable costs. This paper assesses the performance of a green solution (a seagrass meadow) by assessing its effectiveness through numerical modelling. The analysis is carried out at two harbours that, under the present climate, are prone to wave agitation and overtopping problems. The efficiencies of different seagrass layouts are tested at both sites, by comparing the relevant hydrodynamic parameters. It is concluded that, for moderate sea level rise (SLR) rates, illustrated by the central trend of a medium scenario from the Intergovernmental Panel on Climate Change, the use of seagrass meadows would be effective enough to attenuate the impact of SLR on breakwater overtopping. In addition, the use of such measures could attenuate the increases in port agitation due to changes in wave direc...

中文翻译：

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气候变化下地中海港口的绿色措施

气候变化可能会影响港口的可操作性。相对于当前的灰色基础架构，绿色解决方案可用于提供额外的灵活性，以可承受的成本适应并缓解此类功能中断。本文通过数值模型评估绿色解决方案（海草草甸）的有效性，从而评估其性能。分析是在两个港湾进行的，在目前的气候下，这些港湾容易出现海浪搅动和超车问题。通过比较相关的水动力参数，在两个地点测试了不同海草布局的效率。结论是，政府间气候变化专门委员会提出的中等情景的主要趋势表明，对于适度的海平面上升率，使用海草草甸将足以有效减轻SLR对防波堤超限的影响。此外，由于波浪方向的变化，使用此类措施可能会减弱端口搅动的增加。